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Статті в журналах з теми "Biosouced materiels"

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Автор: Grafiati

Опубліковано: 8 червня 2024

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1

Llanes, Ludovic, Pascal Dubessay, Guillaume Pierre, Cédric Delattre, and Philippe Michaud. "Biosourced Polysaccharide-Based Superabsorbents." Polysaccharides 1, no. 1 (November 16, 2020): 51–79. http://dx.doi.org/10.3390/polysaccharides1010005.

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In the last decades, many studies have been conducted on new materials to meet a growing industrial demand and to move scientific research forward. Superabsorbents are good examples of materials that have generated special attention in many fields for their ability to absorb and retain water up to 1000 times of their dry weight. They found many applications in hygiene products and other products, for a fast growing market of USD 9.58 Billion in 2019. Most of them are composed of synthetic polymers, which are often not environmentally friendly. Therefore, natural superabsorbents and particularly those based on polysaccharides have received a recent increased interest for their biodegradability, biocompatibility, and renewability. This review focuses on polysaccharide-based superabsorbents, on their properties, synthesis methods, and characterization. Their potential applications in many fields, such as biomedical and hygiene, agriculture, water treatment, and the building sector, are also reported with an interest in products already marketed.

2

Sessini, Valentina, Bashar Haseeb, Antal Boldizar, and Giada Lo Re. "Sustainable pathway towards large scale melt processing of the new generation of renewable cellulose–polyamide composites." RSC Advances 11, no. 2 (2021): 637–56. http://dx.doi.org/10.1039/d0ra07141b.

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3

Bellel , N. and Boufendi , T. "Characterization of Biosourced Materials Cement - Date Palm Fibers." Journal of New Technology and Materials 10, no. 1 (June 2020): 26–30. http://dx.doi.org/10.12816/0058147.

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4

Amaral-Labat, G., L. I. Grishechko, G. F. B. Lenz e Silva, B. N. Kuznetsov, V. Fierro, A. Pizzi, and A. Celzard. "Rubber-like materials derived from biosourced phenolic resins." Journal of Physics: Conference Series 879 (July 2017): 012013. http://dx.doi.org/10.1088/1742-6596/879/1/012013.

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5

Pierre, Thomas, Thibaut Colinart, and Patrick Glouannec. "Measurement of Thermal Properties of Biosourced Building Materials." International Journal of Thermophysics 35, no. 9-10 (July 19, 2013): 1832–52. http://dx.doi.org/10.1007/s10765-013-1477-0.

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6

Boivin, Louis-Philippe, William Dupont, Mario Leclerc, and David Gendron. "Biosourced Vanillin-Based Building Blocks for Organic Electronic Materials." Journal of Organic Chemistry 86, no. 23 (November 12, 2021): 16548–57. http://dx.doi.org/10.1021/acs.joc.1c01869.

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7

Fang, Xiao Yi, Olivier Vitrac, Sandra Domenek, and Violette Ducruet. "Controlling the Molecular Interactions to Improve the Diffusion Barrier of Biosourced Polymers to Organic Solutes." Defect and Diffusion Forum 323-325 (April 2012): 269–74. http://dx.doi.org/10.4028/www.scientific.net/ddf.323-325.269.

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The presented original work examines how sorption and diffusion can be combined at molecular scale in nanocomposite materials to improve the resistance to diffusion of biosourced or biodegradable polymers. The concept is applied to apolar penetrants and discussed on polycaprolactone (PCL) containing organomodified montmorillionites acting as nanoadsorbents.

8

Ba, Housseinou, Wei Wang, Sergey Pronkin, Thierry Romero, Walid Baaziz, Lam Nguyen-Dinh, Wei Chu, Ovidiu Ersen, and Cuong Pham-Huu. "Biosourced Foam-Like Activated Carbon Materials as High-Performance Supercapacitors." Advanced Sustainable Systems 2, no. 2 (January 12, 2018): 1700123. http://dx.doi.org/10.1002/adsu.201700123.

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9

Santato, Clara. "(Invited) Biodegradable Organic Electronics: Degradation of Eumelanin Studied by Fluorescence Spectroscopy." ECS Meeting Abstracts MA2022-01, no. 20 (July 7, 2022): 1098. http://dx.doi.org/10.1149/ma2022-01201098mtgabs.

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A paradigm shift in resource exploitation and e-waste management is needed to promote sustainability in electronics. Reusing and recycling electronic devices is not only environmentally desirable but also economically viable and increasingly socially acceptable. A promising route to alleviate the environmental footprint of electronics is based on the use of abundant materials, novel production schemes involving non-toxic materials (through green chemistry processes), and eco-design of devices that includes environmentally acceptable end-of-life scenarios. Within this context, we integrate biosourced electro- and photo-active organic electronic materials, such as melanin, indigo, tannin and lignin derivatives (some of these readily available from biomass feedstock, abundant in Canada) into electronic and energy storage devices, such as transistors and batteries. Biosourced organic electronic materials can be biodegradable. As such, they offer the opportunity for an environmentally benign device end-of-life scenario (as opposed to the present accumulation of e-waste). The melanin biopigment family serves as a prototypical environmentally benign class of materials for sustainable organic electronics and its powering elements. Among melanins, eumelanin is a brown-black type found in the human body, other mammals, reptiles, amphibians, and fishes as well as in invertebrates, such as cuttlefish and insects. Sepia Melanin (natural eumelanin) is a type of biosourced eumelanin extracted from the ink sac of cuttlefish. Synthetic eumelanin is commercially available (indicated here as Sigma eumelanin). We recently reported on encouraging studies on the biodegradability of eumelanin in industrial compost conditions (Di Mauro, E., Rho, D. & Santato, C. Biodegradation of bio-sourced and synthetic organic electronic materials towards green organic electronics. Nature Communications, https://doi.org/10.1038/s41467-021-23227-4); unfortunately, we did not report on intermediates of the biodegradation process. Insight on intermediates is expected to bring about an increase of the mineralization rate of eumelanin. Here, we will discuss possible oxidative degradation pathways of the biopigment eumelanin tin industrial compost conditions hrough fluorescence spectroscopy. Indeed, literature reports that oxidized (by oxidative cleavage of the quinoid structure of the indole moiety), naturally occurring eumelanin can give a lipofuscin-like yellow fluorescence.

10

Enneiymy, Mohamed, Claude Le Drian, and Jean-Michel Becht. "Green reusable Pd nanoparticles embedded in phytochemical resins for mild hydrogenations of nitroarenes." New Journal of Chemistry 43, no. 44 (2019): 17383–89. http://dx.doi.org/10.1039/c9nj04474d.

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11

Ganou Koungang, Bernard Morino, Luc Courard, Ulrich Tatchum Defo, Dieunedort Ndapeu, Ebénézer Njeugna, and Shady Attia. "Evaluating Thermal Performance and Environmental Impact of Compressed Earth Blocks with Cocos and Canarium Aggregates: A Study in Douala, Cameroon." International Journal of Engineering Research in Africa 67 (December 18, 2023): 49–66. http://dx.doi.org/10.4028/p-71umdz.

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A novel low-cost earthen construction system integrating biosourced aggregates is proposed for houses’ erection of low-income households. This study is based on in-situ measurements on two representative test cells constructed in Douala, with a typical hot and humid climate. One of these buildings is made with a hollow cement block as a reference, and the other with biosourced earth bricks modified with Cocos nucifera and Canarium schweinfurthii aggregates. Dynamic thermal simulations of the two test cells were performed using the EnergyPlus building performance simulation program. The results are based on measuring air temperature and humidity, and the simulation leads to defining the discomfort hours and the annual energy consumption. The adaptive ASHRAE 55 thermal comfort model was used to evaluate the comfort conditions. The results show that air conditioning systems provide the best comfort systems with minimums of about 95% for plastered and unplastered wall construction systems. Biosourced compressed earth brick constructions offered the best thermal performance with comfort ranges of around 96% and 44% for air conditioning and natural ventilation, respectively. In terms of energy consumed, there was a gain of about 100 kWh over the year. Energy consumption is lower in the biosourced compressed earth brick building than in the hollowed cement block building: this one offered the lowest comfort range of about 40% in natural ventilation. The construction provisions were considered for the life cycle assessment, and two scenarios describing the origin of the cement raw materials were considered. It can be seen that cement accounts for more than 95% of the impacts for both construction systems, as well as for the scenarios of its origin. In all situations, the hollowed cement block construction presented the highest impact on the global warming potential: 66 KgCO2eq and 89 KgCO2eq, respectively, without plaster and with plaster. It can also be seen that the plastered layer had a carbon footprint (in terms of Green House Gas Emissions (GHG emissions)) of almost 40% on the overall functional unit. Canarium Schweinfurthii and Cocos Nucifera materials accounted for only 1% of the overall impact.

12

Nousir, Saadia, Gerlainde Yemelong, Sameh Bouguedoura, Yoann M. Chabre, Tze Chieh Shiao, René Roy, and Abdelkrim Azzouz. "Improved carbon dioxide storage over clay-supported perhydroxylated glucodendrimer." Canadian Journal of Chemistry 95, no. 9 (September 2017): 999–1007. http://dx.doi.org/10.1139/cjc-2017-0219.

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Low-cost biosourced hybrid microporous adsorbents with improved affinity towards carbon dioxyde (CO2) were prepared through the incorporation of various amounts of glucosylated dendrimer into bentonite- and montmorillonite-rich composite materials. Characterization by nitrogen adsorption–desorption isotherms, surface specific and pore size analyses (BET and BJH), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) revealed changes in the interlayer spacing and textural structure of the materials. Thermal programmed desorption measurements (TPD) showed significant improvements of the retention capacity of CO2 (CRC) and water (WRC). This was explained in terms of enhancement of both surface basicity and hydrophilic character due to the incorporation of terminal polyhydroxyl groups. The CRC was found to vary according to the previous saturation time with CO2 and the carrier gas throughput. CO2 was totally released upon temperature not exceeding 80 °C or even at room temperature upon strong carrier gas stream, thus providing evidence that CO2 capture involves almost exclusively physical interaction with the OH groups of the dendrimer. This result opens promising prospects for the reversible capture of carbon dioxide with easy release without thermal regeneration, more particularly when extending this concept to biosourced dendrimers.

13

Lemieux, Julien, Daniel Bélanger, and Clara Santato. "Toward Biosourced Materials for Electrochemical Energy Storage: The Case of Tannins." ACS Sustainable Chemistry & Engineering 9, no. 17 (April 22, 2021): 6079–86. http://dx.doi.org/10.1021/acssuschemeng.1c01535.

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14

Belarbi, Yassine Elias, Ferhat Benmahiddine, Ameur El Amine Hamami, Sofiane Guessasma, and Sofiane Belhabib. "Hygrothermal and Microstructural Investigation of PLA and PLA-Flax Printed Structures." Fibers 10, no. 3 (March 3, 2022): 24. http://dx.doi.org/10.3390/fib10030024.

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The aim of this work is to explore the manufacturing of insulation structures using fused filament deposition of biosourced materials. The approach considers printing of Polylactic acid (PLA) and PLA-flax (PF) structures using varied infill density and printing temperatures. Differential Scanning Calorimetry and Thermal Gravimetry analysis are performed to study thermal behaviour of PLA and PF and derive weight content of fibres within PF. Thermal measurements show a strong dependence of thermal conductivity with infill density and slightly improved thermal insulation of PF compared to PLA. Moreover, both PF and PLA show a hydrophobic behaviour unlike conventional green concretes based on hemp or flax. In addition, both scanning electron and optical microscopies show marked morphological changes induced by the laying down process for PF. This latter exhibits a more complex and tortuous microstructure compared to PLA marked by the presence of inter-filament porosity. This work concludes with superior hygrothermal properties of PLA and PF compared to other biosourced materials such as hemp or flax concrete. This work also concludes with the beneficial role of flax fibres that provides better hygrothermal properties to the printed structures as well as on the need to optimize the infill characteristics including density and cell morphology density.

15

Ba, Labouda, Ikram El Abbassi, Cheikh S. E. Kane, A.-M. Darcherif, and Mamoudou Ndongo. "Thermal performance of biosourced materials on Buildings: The case of Typha Australis." MATEC Web of Conferences 330 (2020): 01011. http://dx.doi.org/10.1051/matecconf/202033001011.

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Developing countries are facing population growth, which leads, on the one hand, to increased requirements for buildings and, on the other hand, to the depletion of fossil fuels along with exposure, of people living in those areas, to some detrimental consequences of climate change. Because of these factors, we propose approaches to control energy consumption in buildings. In some countries, the architectures adopted are not adequate to the environment and climate, resulting in discomfort in those buildings, in such circumstances, residents resort to the use of energy systems, such as heating, ventilation, and air conditioning, which leads to exorbitant electricity bills. Housing consumes 40% of the world's energy and is responsible for a third of greenhouse gas emissions. Optimizing energy needs in buildings is a solution to overcome these problems. For this purpose, there are solutions such as: the design of the building characterized by its shape and envelope, while using less energy-consuming equipment. For several years, the building materials sector has been developing with a particular focus on bio-source materials, which are generally materials with good thermal performance. In order to highlight the thermal performance of bio-source materials, we will study the case of Typha Australis which is a plant of the Typhaceae family that grows abundantly in an aquatic environment mainly in the Senegal River valley.Recent studies showed that Typha Australis has good thermal insulation properties. In order to determine the impact of Typha Australis on a building, a dynamic thermal simulation was carried out using the Trnsys software according to specific scenarios, the Typha was mixed with other local materials and used as a wall insulation panel, the result of the study shows that this fiber has allowed us to optimize energy consumption in a building. Mixing Typha with other materials (e. g. clay) is a promising solution for energy efficiency in buildings.

16

Mohanty, Amar K., Singaravelu Vivekanandhan, Jean-Mathieu Pin, and Manjusri Misra. "Composites from renewable and sustainable resources: Challenges and innovations." Science 362, no. 6414 (November 1, 2018): 536–42. http://dx.doi.org/10.1126/science.aat9072.

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Interest in constructing composite materials from biosourced, recycled materials; waste resources; and their combinations is growing. Biocomposites have attracted the attention of automakers for the design of lightweight parts. Hybrid biocomposites made of petrochemical-based and bioresourced materials have led to technological advances in manufacturing. Greener biocomposites from plant-derived fiber and crop-derived plastics with higher biobased content are continuously being developed. Biodegradable composites have shown potential for major uses in sustainable packaging. Recycled plastic materials originally destined for landfills can be redirected and repurposed for blending in composite applications, thus leading to reduced dependence on virgin petro-based materials. Studies on compatibility of recycled and waste materials with other components in composite structure for improved interface and better mechanical performance pose major scientific challenges. This research holds the promise of advancing a key global sustainability goal.

17

Raytchev, Pascal Dimitrov, Céline Besset, Etienne Fleury, Jean-Pierre Pascault, Julien Bernard, and Eric Drockenmuller. "1,4:3,6-Dianhydrohexitols: Original platform for the design of biobased polymers using robust, efficient, and orthogonal chemistry." Pure and Applied Chemistry 85, no. 3 (August 15, 2012): 511–20. http://dx.doi.org/10.1351/pac-con-12-03-11.

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1,4:3,6-Dianhydrohexitols (DAHs) are nontoxic and sustainable diols that have been extensively applied as monomers for the preparation of polymer materials by step-growth polymerization processes. The presence of two reactive alcohol groups was exploited to design a library of symmetric and asymmetric stereocontrolled alkyne- and/or azide-functionalized AA/BB and AB monomers suitable for thermal or copper(I)-catalyzed azide-alkyne cycloaddition (TAAC and CuAAC). Step-growth polymerization of these monomers yielded a series of linear polytriazoles as well as partially biosourced networks using a combination of AB + A2B2 derivatives. Characterization of the resulting materials allowed for the establishment of a thorough structure–property relationship emphasizing the impact of monomer stereochemistry and cycloaddition regioselectivity on materials properties.

18

Dobircau, L., L. Rupert, J. Turner, L. Delbreilh, E. Dargent, and J. M. Saiter. "Vibro-Acoustic Behaviour in Biosourced Composites." Macromolecular Symposia 328, no. 1 (June 2013): 56–63. http://dx.doi.org/10.1002/masy.201350606.

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19

Alqarni, Laila S., Maha D. Alghamdi, Aisha A. Alshahrani, and Amr M. Nassar. "Green Nanotechnology: Recent Research on Bioresource-Based Nanoparticle Synthesis and Applications." Journal of Chemistry 2022 (August 9, 2022): 1–31. http://dx.doi.org/10.1155/2022/4030999.

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In the last decades, the idea of green nanotechnology has been expanding, and researchers are developing greener and more sustainable techniques for synthesizing nanoparticles (NPs). The major objectives are to fabricate NPs using simple, sustainable, and cost-effective procedures while avoiding the use of hazardous materials that are usually utilized as reducing or capping agents. Many biosources, including plants, bacteria, fungus, yeasts, and algae, have been used to fabricate NPs of various shapes and sizes. The authors of this study emphasized the most current studies for fabricating NPs from biosources and their applications in a wide range of fields. This review addressed studies that cover green techniques for synthesizing nanoparticles of Ag, Au, ZnO, CuO, Co3O4, Fe3O4, TiO2, NiO, Al2O3, Cr2O3, Sm2O3, CeO2, La2O3, and Y2O3. Also, their applications were taken under consideration and discussed.

20

Schlienger, Sébastien, Anne-Laure Graff, Alain Celzard, and Julien Parmentier. "Direct synthesis of ordered mesoporous polymer and carbon materials by a biosourced precursor." Green Chem. 14, no. 2 (2012): 313–16. http://dx.doi.org/10.1039/c2gc16160e.

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21

Duquesne, M., C. Mailhé, K. Ruiz-Onofre, and F. Achchaq. "Biosourced organic materials for latent heat storage: An economic and eco-friendly alternative." Energy 188 (December 2019): 116067. http://dx.doi.org/10.1016/j.energy.2019.116067.

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22

Teo, Siew Yong, Siang Yin Lee, Huey Lin Ong, Ching Lin Ong, Seng Neon Gan, Michael J. Rathbone, and Allan G. A. Coombes. "Evaluation of Biosourced Alkyd Nanoemulsions as Drug Carriers." Journal of Nanomaterials 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/537598.

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Novel oil-in-water (O/W) nanoemulsions were formulated using short, medium, and long oil length alkyds synthesized from palm kernel oil by a two-stage alcoholysis-polyesterification reaction. Alkyd/surfactant/water ternary phase diagrams identified a composition of 1% alkyd, 9% Tween 80, and 90% water where spontaneous production of nanoemulsions occurred. The pH, droplet size, and zeta potential of all formulations were in the range of 6.4–6.6, 11–14 nm, and −6 mV to −8 mV, respectively. Rheological studies showed that the nanoemulsions displayed non-Newtonian shear thinning behavior at low shear rates up to 20 s−1with conversion to Newtonian behavior above this shear rate. All nanoemulsions were found to be stable against phase separation on storage at 4°C and 25°C for three months. Short oil length alkyd nanoemulsions exhibited significantly higher stability compared with medium and long oil length alkyd nanoemulsions, as demonstrated by an absence of phase separation and only minor changes of droplet size on storage at an elevated temperature of 45°C for 3 months. The drug carrying capacity and storage stability of the nanoemulsions were assessed using phenytoin. The entrapment efficiency of alkyd nanoemulsions was in excess of 90% and loss of phenytoin content was restricted to less than 4% during storage of the nanoemulsions for three months at 4°C, 25°C, and 45°C. Taken together, these findings indicate that nanoemulsions prepared from palm kernel oil-based alkyds offer potential as nanocarriers for drug delivery applications.

23

Cao, Yuanyuan, Pei‐Xi Wang, Francesco D'Acierno, Wadood Y. Hamad, Carl A. Michal, and Mark J. MacLachlan. "Tunable Diffraction Gratings from Biosourced Lyotropic Liquid Crystals." Advanced Materials 32, no. 19 (April 3, 2020): 1907376. http://dx.doi.org/10.1002/adma.201907376.

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24

Azat, S., U. Zhantikeyev, U. Z. Tauanov, and K. Bekseitova. "Biosourced silica / Ag composite materials as a new adsorbent for the removal of mercury ions from water." Novosti nauki Kazahstana 156, no. 1 (March 30, 2023): 6–15. http://dx.doi.org/10.53939/15605655/2023_1_6.

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In this study, the synthesis of a new composite adsorbent using rice biosourced silica, silver nanoparticles and triethoxysilane as the raw materials for removal aqueous mercury ions from water is presented. The new composite material was synthesised by modification of the surface of rice husk based silica with silane groups and farther decoration with silver nanoparticles. Characterization was carried out through, Fourier transform infrared (FT-IR) spectra analysis, N2 adsorption-desorption (Brunauer-Emmett-Teller) and thermal gravimetric analysis (TGA). Synthetic and real mercury containing water sampled from Balkyldak lake-reservoir, Kazakhstan were tested. The results demonstrated that the affinity of the composite for mercury is high and the removal mechanism is adsorption accompanied by an amalgamation reaction between silver and mercury.

25

Ferreira, Ana M., Jorge Martins, Luísa H. Carvalho, and Fernão D. Magalhães. "Biosourced Disposable Trays Made of Brewer’s Spent Grain and Potato Starch." Polymers 11, no. 5 (May 26, 2019): 923. http://dx.doi.org/10.3390/polym11050923.

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Single-use plastic items made of non-biodegradable and fossil-based materials have been identified as a major environmental problem in modern society. Food packaging materials represent an important fraction of these, and replacement with biosourced, sustainable and low-cost alternatives, is a key priority. In the present work, and for the first time, trays suitable for some food packaging applications were produced by the hot-pressing of brewer’s spent grains (BSG, a low added-value byproduct of the beer industry), bound with potato starch. Expanded polystyrene (EPS) trays were used as reference, since this material has been widely used in food packaging trays. The results demonstrated that all trays produced with varying proportions of BSG and potato starch have appropriate flexural strength, with values ranging between 1.51 ± 0.32 MPa, for 80% BSG content, and 2.62 ± 0.46 MPa, for 40% BSG content, which is higher than for EPS, 0.64 ± 0.50 MPa. Regardless of BSG content, flexural strength and modulus decreased significantly after contact with water, due to starch plasticization, attaining values below EPS. Trays produced with 60% BSG, and also with the addition of chitosan and glyoxal presented the highest flexural strength, both before and after contact with water, 3.75 ± 0.52 MPa and 0.44 ± 0.11 MPa, respectively. The latter is reasonably close to the reference value obtained for EPS.

26

Mailhé, Clément, Marie Duquesne, Elena Palomo del Barrio, Mejdi Azaiez, and Fouzia Achchaq. "Phase Diagrams of Fatty Acids as Biosourced Phase Change Materials for Thermal Energy Storage." Applied Sciences 9, no. 6 (March 14, 2019): 1067. http://dx.doi.org/10.3390/app9061067.

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Thermal energy storage is known as a key element to optimize the use of renewable energies and to improve building performances. Phase change materials (PCMs) derived from wastes or by-products of plant or animal oil origins are low-cost biosourced PCMs and are composed of more than 75% of fatty acids. They present paraffin-like storage properties and melting temperatures ranging from −23 °C to 78 °C. Therefore, they could be appropriate for latent heat storage technologies for building applications. Although already studied, a more detailed exploration of this class of PCMs is still required. In this frame, a screening of fatty acids and of their related binary systems must be performed. The infrared thermography method (IRT), already used for the fast estimation of simple phase diagrams (~2 h), appears to be best suited to achieve this goal. IRT method applicability to the more complex fatty acids phase diagrams is hence studied in this work. A phase diagram comprising more than a hundred data sets was obtained for the palmitic acid–stearic acid binary system. The reliability of the results is assessed by comparison to differential scanning calorimetry (DSC) measurements or results from other standard methods presented in literature and to a solid–liquid equilibrium thermodynamic model.

27

Paradiso, Veronica, Raffaele Contino, and Fabia Grisi. "NHC Ligand Effects on Ru-Catalyzed Cross-Metathesis of Renewable Materials." Catalysts 10, no. 8 (August 8, 2020): 904. http://dx.doi.org/10.3390/catal10080904.

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As petrochemical resources become increasingly scarce and expensive, much attention has been focused on renewable resources from biomass as alternative options for producing basic building blocks for chemical manufacturing. Catalytic olefin metathesis represents a powerful tool to transform biosourced structural motifs in valuable commodity, fine, and specialty chemicals. In that respect, the appropriate choice of the catalyst is the key issue of each metathesis transformation. The current study examines the influence of different N-heterocyclic carbene (NHC) ligands containing one or two N-alkyl substituents on the efficiency of Hoveyda–Grubbs-type catalysts in the cross-metathesis reaction of ethyl oleate with cis-1,4-diacetoxy-2-butene and cross-metathesis of eugenol acetate with cis-1,4-dichloro-2-butene. Interestingly, the introduction of alkyl N-substituents in the NHC ligand was revealed as beneficial for catalytic performances in the examined cross-metathesis (CM) reactions, leading to higher activity and/or selectivity than those observed in the presence of the classical, commercially available Hoveyda–Grubbs second generation catalyst (HGII).

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Thomas, Bejoy, Midhun C. Raj, Athira K. B, Rubiyah M. H, Jithin Joy, Audrey Moores, Glenna L. Drisko, and Clément Sanchez. "Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications." Chemical Reviews 118, no. 24 (November 7, 2018): 11575–625. http://dx.doi.org/10.1021/acs.chemrev.7b00627.

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Pramanik, Subhamay, Victor W. Day, and Kristin Bowman-James. "Supramolecular traps for highly phosphorylated inositol sources of phosphorus." Chemical Communications 56, no. 22 (2020): 3269–72. http://dx.doi.org/10.1039/c9cc09321d.

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Danafar, Hossein, Marziyeh Salehiabar, Murat Barsbay, Hossein Rahimi, Mohammadreza Ghaffarlou, Kasra Arbabi Zaboli, Mohammad Hasan Faghfoori, Saeed Kaboli, Hamed Nosrati, and Zeinab Faghfoori. "Curcumin delivery by modified biosourced carbon-based nanoparticles." Nanomedicine 17, no. 2 (January 2022): 95–105. http://dx.doi.org/10.2217/nnm-2021-0225.

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Aim: To prepare a novel hybrid system for the controlled release and delivery of curcumin (CUR). Methods: A method for the ultrasound-assisted fabrication of protein-modified nanosized graphene oxide-like carbon-based nanoparticles (CBNPs) was developed. After being modified with bovine serum albumin (BSA), CUR was loaded onto the synthesized hybrid (labeled CBNPs@BSA–CUR). The structure and properties of the synthesized nanoparticles were elucidated using transmission electron microscopy (TEM), atomic force microscopy (AFM), ultraviolet-visible spectroscopy (UV-Vis), Fourier-transform infrared spectroscopy (FTIR) and x-ray photoelectron spectroscopy (XPS) methods. Results: CBNPs@BSA–CUR showed pH sensitivity and were calculated as controlled CUR release behavior. The drug-free system exhibited good biocompatibility and was nontoxic. However, CBNPs@BSA–CUR showed acceptable antiproliferative ability against MCF-7 breast cancer cells. Conclusion: CBNPs@BSA–CUR could be considered a highly promising nontoxic nanocarrier for the delivery of CUR with good biosafety.

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Depoorter, Jérémy, Adeline Mourlevat, Guillaume Sudre, Isabelle Morfin, Kamalesh Prasad, Anatoli Serghei, Julien Bernard, Etienne Fleury, and Aurélia Charlot. "Fully Biosourced Materials from Combination of Choline Chloride-Based Deep Eutectic Solvents and Guar Gum." ACS Sustainable Chemistry & Engineering 7, no. 19 (September 16, 2019): 16747–56. http://dx.doi.org/10.1021/acssuschemeng.9b04228.

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Challansonnex, A., J. Casalinho, and P. Perré. "Non-Fickian diffusion in biosourced materials: Experimental determination of the memory function using minute samples." Construction and Building Materials 224 (November 2019): 560–71. http://dx.doi.org/10.1016/j.conbuildmat.2019.07.013.

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Sandwidi, Sayouba, Abdoulaye Compaore, Kayaba Haro, Téré Dabilgou, Souleymane Sinon, Oumar Sanogo, Jean Koulidiati, and Antoine Bere. "Hygrothermal Study of a House Made of Local Biosourced Materials Based on Clay: Experimental Study." Open Journal of Applied Sciences 13, no. 01 (2023): 60–75. http://dx.doi.org/10.4236/ojapps.2023.131006.

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Hamieh, N., F. Collet, and A. Meslem. "An innovative forced convection method for drying geosourced and biosourced construction materials at wall scale." Journal of Physics: Conference Series 2654, no. 1 (December 1, 2023): 012078. http://dx.doi.org/10.1088/1742-6596/2654/1/012078.

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Abstract As global temperatures continue to rise, climate change impacts are now being observed in all aspects of life, driving the need to transition to a low-carbon economy. In the building sector and as a construction material, Earth-Hemp composites present a sustainable solution due to their low embodied energy and low environmental impact. However, at the construction site, and as with any other material, the drying process of Earth-Hemp can be very slow, which can lead to costly delays for building work and even serious problems in term of mold growth affecting their durability. The objective of this work is to develop an innovative drying method to reduce drying time of construction materials and speed up the completion of a project. In this paper, a comparative study of natural convection drying with innovative forced convection drying is carried out on sprayed Earth-Hemp-Lime "ELH" prototypes. The results show that the innovative forced convection method is very effective for drying ELH materials at an accelerated rate, where the drying period has been reduced by a factor of 2, compared to the drying time required when using the natural convection method.

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Droesbeke, Martijn A., Alexandre Simula, José M. Asua, and Filip E. Du Prez. "Biosourced terpenoids for the development of sustainable acrylic pressure-sensitive adhesives via emulsion polymerisation." Green Chemistry 22, no. 14 (2020): 4561–69. http://dx.doi.org/10.1039/d0gc01350a.

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Terpenoid-based (meth)acrylates are introduced in waterborne acrylic pressure-sensitive adhesives via emulsion polymerization. These materials showed good tack, peel strength and shear resistance properties, comparable to a petroleum-based benchmark.

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Howell, Bob A., Kendahl L. Oberdorfer, and Eric A. Ostrander. "Phosphorus Flame Retardants for Polymeric Materials from Gallic Acid and Other Naturally Occurring Multihydroxybenzoic Acids." International Journal of Polymer Science 2018 (December 24, 2018): 1–12. http://dx.doi.org/10.1155/2018/7237236.

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The development of polymer and polymer additives from renewable biosources is becoming increasingly prominent. This reflects increasing concerns about sustainability, environmental quality, and human health. Bioproducts produced in nature are generally inexpensive and benign in the environment. Moreover, degradation of derivatives does not yield toxic products. Gallic acid (3,4,5-trihydroxybenzoic acid) is found widely in nature and has long been touted for its medicinal qualities. 3,5-Dihydroxybenzoic acid is also produced by several plants, most notably buckwheat. Both compounds, as the anilide and methyl ester, respectively, have been converted to a series of phosphorus esters, both phosphonate and phosphate. Esters have been fully characterized using spectroscopic and thermal methods. These compounds display good flame retardancy at low loadings in DGEBA epoxy resin.

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Ungureanu, Simona, Marc Birot, Gérard Vignoles, Christophe Lorette, Gilles Sigaud, Hervé Deleuze, and Rénal Backov. "Integrative Chemistry toward Biosourced SiC Macrocellular Foams Bearing Unprecented Heat Transport Properties." MRS Proceedings 1621 (2014): 209–14. http://dx.doi.org/10.1557/opl.2014.2.

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ABSTRACTBlack liquor is a by-product of the paper mill Kraft process that deserves more valorization than its present use as low-grade fuel. In this work, SiC/C composite foams were prepared for the first time from concentrated emulsions by carbothermal reduction of bio-sourced precursors combining sodium silicate by lignin at 1400°C. The composition of the materials was determined by XRD, FTIR and Raman analyses. Their porous structure was characterized by SEM, mercury intrusion porosimetry, and nitrogen sorption, while their thermal properties were measured by TGA and dynamic DSC. Concerning their heat transport properties, we found out that when the starting lignin content was increased, the final C/Si ratio, the specific surface area and the heat diffusivity increased as well. Its high values were attributed to a cooperative effect between radiative heat transfer and the presence of partially graphitized carbon.

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Nguyen, Dang Mao, Giana Almeida, Thi Mai Loan Nguyen, Jing Zhang, Pin Lu, Julien Colin, and Patrick Perré. "A Critical Review of Current Imaging Techniques to Investigate Water Transfers in Wood and Biosourced Materials." Transport in Porous Media 137, no. 1 (February 11, 2021): 21–61. http://dx.doi.org/10.1007/s11242-020-01538-2.

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Challansonnex, A., J. Casalinho, and P. Perré. "Non-Fickian diffusion in biosourced materials: Prediction of the delay between relative humidity and moisture content." Energy and Buildings 202 (November 2019): 109340. http://dx.doi.org/10.1016/j.enbuild.2019.109340.

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Fournier, Pauline, Caroline R. Szczepanski, René-Paul Godeau, and Guilhem Godeau. "Chitosan Extraction from Goliathus orientalis Moser, 1909: Characterization and Comparison with Commercially Available Chitosan." Biomimetics 5, no. 2 (April 26, 2020): 15. http://dx.doi.org/10.3390/biomimetics5020015.

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Chitosan is a polymer obtained by deacetylation of chitin, and chitin is one of the major components of the arthropod cuticle. Chitin and chitosan are both polysaccharides and are considered to be an interesting class of biosourced materials. This is evident as chitosan has already demonstrated utility in various applications in both industrial and biomedical domains. In the present work, we study the possibility to extract chitin and prepare chitosan from the Goliath beetle Goliathus orientalis Moser. The presented work includes description of this process and observation of the macroscopic and microscopic variations that occur in the specimen during the treatment. The prepared chitosan is characterized and compared with commercially available chitosan using infrared and thermogravimetric analysis. The deacetylation degree of prepared chitosan is also evaluated and compared with commercially available shrimp chitosan.

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Bensabeh, Nabil, Ana Jiménez-Alesanco, Ilme Liblikas, Juan C. Ronda, Virginia Cádiz, Marina Galià, Lauri Vares, Olga Abián, and Gerard Lligadas. "Biosourced All-Acrylic ABA Block Copolymers with Lactic Acid-Based Soft Phase." Molecules 25, no. 23 (December 5, 2020): 5740. http://dx.doi.org/10.3390/molecules25235740.

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Lactic acid is one of the key biobased chemical building blocks, given its readily availability from sugars through fermentation and facile conversion into a range of important chemical intermediates and polymers. Herein, well-defined rubbery polymers derived from butyl lactate solvent were successfully prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization of the corresponding monomeric acrylic derivative. Good control over molecular weight and molecular weight distribution was achieved in bulk using either monofunctional or bifunctional trithiocarbonate-type chain transfer agents. Subsequently, poly(butyl lactate acrylate), with a relative low Tg (−20 °C), good thermal stability (5% wt. loss at 340 °C) and low toxicity was evaluated as a sustainable middle block in all-acrylic ABA copolymers using isosorbide and vanillin-derived glassy polyacrylates as representative end blocks. Thermal, morphological and mechanical properties of copolymers containing hard segment contents of <20 wt% were evaluated to demonstrate the suitability of rubbery poly(alkyl lactate) building blocks for developing functional sustainable materials. Noteworthy, 180° peel adhesion measurements showed that the synthesized biosourced all-acrylic ABA copolymers possess competitive performance when compared with commercial pressure-sensitive tapes.

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Howell, Bob A., and Eric A. Ostrander. "Flame‐retardant compounds for polymeric materials from an abundantly available, renewable biosource, castor oil." Fire and Materials 44, no. 2 (December 26, 2019): 242–49. http://dx.doi.org/10.1002/fam.2796.

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M’sahel, Malek, Ayoub Elmahdi, Raouf Medimagh, Eric Drockenmuller, and Mongia Said Zina. "Synthesis and characterization of novel biosourced building blocks from isosorbide." Designed Monomers and Polymers 19, no. 2 (January 1, 2016): 108–18. http://dx.doi.org/10.1080/15685551.2015.1124317.

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Ghabo, Alphousseyni, Seckou Bodian, and El hadji Dieng. "Evaluation of the Physical and Thermal Properties of Fibers Extracted from the Trunks of Urena Lobata and SIDA Stipulata Plants." Current Journal of Applied Science and Technology 43, no. 4 (April 10, 2024): 84–92. http://dx.doi.org/10.9734/cjast/2024/v43i44371.

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This scientific work was carried out to investigate the properties (hygroscopic, physical and thermal) of fibers extracted from the Urena Lobata and Sida Stipulata plants, in order to compare them with other fibers already used in the manufacture of panels or biosourced concretes. The fibers are manually detached from the plant trunk, then dried and studied. The results of the study revealed that Urena Lobata fibers are more sensitive to water. The water absorption rate and water content were respectively evaluated at 228.58% and 10.5% for Urena Lobata fibers and 220.94% and 8.6% for Sida Stipulata fibers. For densities ranging from 111 to 193.31 kg/m3, the measured thermal conductivities are between 0.046 - 0.075 W/ mK for Urena Lobata fibers and 0.043 - 0.064 W/mK for Sida Stipulata fibers. These results show that both types of fiber can be used in the manufacture of thermal insulation materials.

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Al-Obaidy, Muheeb, Luc Courard, and Shady Attia. "A Parametric Approach to Optimizing Building Construction Systems and Carbon Footprint: A Case Study Inspired by Circularity Principles." Sustainability 14, no. 6 (March 13, 2022): 3370. http://dx.doi.org/10.3390/su14063370.

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There is a global call for a paradigm shift in the construction industry towards carbon neutrality, but a scant effort has been madein practice, especially concerning circularity. This paper helps bridge the gap by introducing a parametric approach to optimize sustainable construction design. The methodology was tested on a newly constructed office building, inspired by circularity principles, in Westerlo, Belgium. The methodology consists of parametric construction-typological analysis, automated through One Click LCA software (Life Cycle Assessment) and Microsoft Excel with 21 alternate designs and 630 iterations. The parametric variations involved three key performance indicators: construction system, materials’ environmental impact, and materials; reuse of content. The environmental effects of both construction systems (i.e., structural system, foundation type, materials, and envelope details) and reused building materials content (i.e.,) were evaluated by the parametric analysis for four construction systems scenarios. Environmental impact analysis for timber, steel, concrete, and hybrid construction systems was conducted, following ISO 14040 and CEN/TC 350 standards. The focus of the whole life cycle assessment was mainly on carbon neutrality. Results indicate that using local biosourced materials, including timber, can remarkably reduce buildings’ environmental impact. The sensitivity analysis results provide hard evidence that the construction material’s weight, materials reuse potential, and construction dismantling ability are the most influential factors in carbon-neutral buildings. This paper should improve professionals’ understanding of the impact of different structural systems choices and inform building designers about the circularity potential, and carbon footprint of construction technologies.

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Delgado-Sánchez, C., J. Sarazin, F. J. Santiago-Medina, V. Fierro, A. Pizzi, S. Bourbigot, and A. Celzard. "Impact of the formulation of biosourced phenolic foams on their fire properties." Polymer Degradation and Stability 153 (July 2018): 1–14. http://dx.doi.org/10.1016/j.polymdegradstab.2018.04.006.

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Clarence Semassou, Guy, Jean-Louis Comlan Fannou, Edmond Claude Vodounnou, Mèdéhou Elogni Segbotangni, and Kouamy Victorin Chegnimonhan. "Dynamic Thermal Study of a Building Insulated with Local Biosource Materials and Analysis of Consumption." American Journal of Energy Engineering 9, no. 2 (2021): 48. http://dx.doi.org/10.11648/j.ajee.20210902.14.

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Kumar Sahi, Ajay, Shravanya Gundu, Pooja Kumari, Tomasz Klepka, and Alina Sionkowska. "Silk-Based Biomaterials for Designing Bioinspired Microarchitecture for Various Biomedical Applications." Biomimetics 8, no. 1 (January 28, 2023): 55. http://dx.doi.org/10.3390/biomimetics8010055.

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Biomaterial research has led to revolutionary healthcare advances. Natural biological macromolecules can impact high-performance, multipurpose materials. This has prompted the quest for affordable healthcare solutions, with a focus on renewable biomaterials with a wide variety of applications and ecologically friendly techniques. Imitating their chemical compositions and hierarchical structures, bioinspired based materials have elevated rapidly over the past few decades. Bio-inspired strategies entail extracting fundamental components and reassembling them into programmable biomaterials. This method may improve its processability and modifiability, allowing it to meet the biological application criteria. Silk is a desirable biosourced raw material due to its high mechanical properties, flexibility, bioactive component sequestration, controlled biodegradability, remarkable biocompatibility, and inexpensiveness. Silk regulates temporo-spatial, biochemical and biophysical reactions. Extracellular biophysical factors regulate cellular destiny dynamically. This review examines the bioinspired structural and functional properties of silk material based scaffolds. We explored silk types, chemical composition, architecture, mechanical properties, topography, and 3D geometry to unlock the body’s innate regenerative potential, keeping in mind the novel biophysical properties of silk in film, fiber, and other potential forms, coupled with facile chemical changes, and its ability to match functional requirements for specific tissues.

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Medimagh, R., H. Aloui, M. Jemli, H. Chaabane, F. Belkahla, and K. Khwaldia. "Enhanced functional properties of chitosan films cross-linked by biosourced dicarboxylic acids." Polymer Science Series A 58, no. 3 (April 15, 2016): 409–18. http://dx.doi.org/10.1134/s0965545x16030123.

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Li, Qiong, Songqi Ma, Pengyun Li, Binbo Wang, Hongzhi Feng, Na Lu, Sheng Wang, Yanlin Liu, Xiwei Xu, and Jin Zhu. "Biosourced Acetal and Diels–Alder Adduct Concurrent Polyurethane Covalent Adaptable Network." Macromolecules 54, no. 4 (February 10, 2021): 1742–53. http://dx.doi.org/10.1021/acs.macromol.0c02699.

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