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Добірка наукової літератури з теми "MALEIC ANHYDRIDE HYDROGEL"

Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "MALEIC ANHYDRIDE HYDROGEL"

1

Filho, Cesar M. C., Pedro V. A. Bueno, Alan F. Y. Matsushita, Bruno H. Vilsinski, Adley F. Rubira, Edvani C. Muniz, Dina M. B. Murtinho та Artur J. M. Valente. "Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels". Polymers 12, № 4 (10 квітня 2020): 877. http://dx.doi.org/10.3390/polym12040877.

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Анотація:
Aromatic hydrocarbons are extensive environmental pollutants occurring in both water and air media, and their removal is a priority effort for a healthy environment. The use of adsorbents is among the several strategies used for the remediation of these compounds. In this paper, we aim the synthesis of an amphiphilic hydrogel with the potential for the simultaneous sorption of a set of monocyclic and polycyclic aromatic hydrocarbons associated with toxicity effects in humans. Thus, we start by the synthesis of a copolymer-based in chitosan and β-cyclodextrin previously functionalized with the maleic anhydride. The presence of β-cyclodextrin will confer the ability to interact with hydrophobic compounds. The resulting material is posteriorly incorporated in a cryogel of poly(vinyl alcohol) matrix. We aim to improve the amphiphilic ability of the hydrogel matrix. The obtained hydrogel was characterized by swelling water kinetics, thermogravimetric analysis, rheological measurements, and scanning electron microscopy. The sorption of aromatic hydrocarbons onto the gel is characterized by pseudo-first-order kinetics and Henry isotherm, suggesting a physisorption mechanism. The results show that the presence of maleic anhydride-β-cyclodextrin and chitosan into hydrogels leads to an increase in the removal efficiency of the aromatic compounds. Additionally, the capacity of this hydrogel for removing these pollutants from a fossil fuel sample has also been tested.
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2

Zhang, Ting, Nan Zheng, Jianfang Luo, Huiling Cai, Yanghao Li, Jia Zhai, and Xinyi Peng. "Thermo-sensitive Hydrogel Incorporating Maleic Anhydride Modified Microcrystalline Cellulose." IOP Conference Series: Earth and Environmental Science 446 (March 21, 2020): 022055. http://dx.doi.org/10.1088/1755-1315/446/2/022055.

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3

Ronca, Alfredo, Ugo D’Amora, Maria Raucci, Hai Lin, Yujiang Fan, Xingdong Zhang, and Luigi Ambrosio. "A Combined Approach of Double Network Hydrogel and Nanocomposites Based on Hyaluronic Acid and Poly(ethylene glycol) Diacrylate Blend." Materials 11, no. 12 (December 4, 2018): 2454. http://dx.doi.org/10.3390/ma11122454.

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In this study, an innovative polymer blend, based on double network (DN) approach, has been developed by integrating a poly(ethylene glycol) diacrylate (PEGDA) network into a chemically modified hyaluronic acid sodium salt (HAs) hydrogel matrix. Here, the HAs was chemically functionalized with photocrosslinkable moieties by reacting with maleic anhydride (MAA) to obtain a maleated hyaluronic acid (MaHA). Furthermore, nanocomposite DN hydrogels were suitably prepared by physical blending of hydroxyapatite nanoparticles (HAp), obtained by sol-gel synthesis, within the hydrogel. Physico-chemical, thermal, morphological and mechanical analyses were performed. Results showed enhanced mechanical properties and a homogenous microstructure as highlighted by mechanical and morphological investigations. This suggests that nanocomposite DN hydrogels are promising candidates for biomedical applications.
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Hrib, Jakub, Eva Chylikova Krumbholcova, Miroslava Duskova-Smrckova, Radka Hobzova, Jakub Sirc, Martin Hruby, Jiri Michalek, Jiri Hodan, Petr Lesny, and Roman Smucler. "Hydrogel Tissue Expanders for Stomatology. Part II. Poly(styrene-maleic anhydride) Hydrogels." Polymers 11, no. 7 (June 26, 2019): 1087. http://dx.doi.org/10.3390/polym11071087.

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Анотація:
Self-inflating soft tissue expanders represent a valuable modality in reconstructive surgery. For this purpose, particularly synthetic hydrogels that increase their volume by swelling in aqueous environment are used. The current challenge in the field is to deliver a material with a suitable protracted swelling response, ideally with an induction period (for sutured wound healing) followed by a linear increase in volume lasting several days for required tissue reconstruction. Here, we report on synthesis, swelling, thermal, mechanical and biological properties of novel hydrogel tissue expanders based on poly(styrene-alt-maleic anhydride) copolymers covalently crosslinked with p-divinylbenzene. The hydrogels exerted hydrolysis-driven swelling response with induction period over the first two days with minimal volume change and gradual volume growth within 30 days in buffered saline solution. Their final swollen volume reached more than 14 times the dry volume with little dependence on the crosslinker content. The mechanical coherence of samples during swelling and in their fully swollen state was excellent, the compression modulus of elasticity being between 750 and 850 kPa. In vitro cell culture experiments and in vivo evaluation in mice models showed excellent biocompatibility and suitable swelling responses meeting thus the application requirements as soft tissue expanders.
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Chi, Zheng, Chenchen Ma, Ziyuan He, Zihan Ma, Xuegang Chen, and Zhaoge Huang. "A Supramolecular Hydrogel Based on Copolymers of Acrylic Acid and Maleic Anhydride Derivatives with Terpyridine Motifs." Polymers 14, no. 14 (July 13, 2022): 2857. http://dx.doi.org/10.3390/polym14142857.

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Анотація:
A kind of terpyridine derivative (NH2-Tpy) in which the amino was incorporated by a short alkyl chain was synthesized. Through grafting of terpyridine units into the hydrophilic copolymers of maleic anhydride and acrylic acid PAAMa via the reaction of the amino groups in NH2-Tpy and the maleic anhydride units, a series of gelator polymers—P1, P2, and P3—containing different contents of terpyridine units was synthesized. Under coordination of Ni2+ and terpyridine ligands in linear polymers, the supramolecular hydrogels H1, H2, and H3 with different cross-linking degrees were prepared. The linear polymers P1–P3 had a strong absorption peak at about 290 nm in the UV-vis spectra which was attributed to π–π* transition, and there was a new peak at about 335 nm led by the metal-to-ligands charge transfer (MLCT) when coordinated with Ni2+ ions. According to the rheological behaviors, the storage modulus (G′) was larger than the loss modulus (G′′). These hydrogels showed typical gel-like characteristics when the terpyridine content of the hydrogels exceeded 10%, and the hydrogels showed liquid-like characteristics when the terpyridine content of the hydrogels was less than 7%. The results of the micromorphological investigation of the xerogels from SEM illustrated the metal–terpyridine coordination cross-linking could have an important influence on the microstructures of the resulting hydrogels. Furthermore, these hydrogels based on supramolecular cross-links exhibited reversible solution–gel transition at different environmental temperatures. At the same time, the equilibrium swelling of the supramolecular hydrogels was 8.0–12.3 g/g, which increased with the decrease in the content of the terpyridine units in the resulting hydrogels.
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Eskhan, Asma, and Fawzi Banat. "Removal of Oil from Water by Calcium Alginate Hydrogel Modified with Maleic Anhydride." Journal of Polymers and the Environment 26, no. 7 (January 24, 2018): 2901–16. http://dx.doi.org/10.1007/s10924-018-1188-5.

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Liu, Xinxin, Tao Song, Minmin Chang, Ling Meng, Xiaohui Wang, Runcang Sun, and Junli Ren. "Carbon Nanotubes Reinforced Maleic Anhydride-Modified Xylan-g-Poly(N-isopropylacrylamide) Hydrogel with Multifunctional Properties." Materials 11, no. 3 (February 28, 2018): 354. http://dx.doi.org/10.3390/ma11030354.

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8

Kusumaningsih, Triana, Abu Masykur, Aulia Syifa Aninditha, and Maryam Rahmi Utami. "Preparation and Characterization of PVA/Na-CMC Hydrogel from OPEFB Cross-Linked by Maleic Anhydride." EduChemia (Jurnal Kimia dan Pendidikan) 7, no. 1 (January 30, 2022): 36. http://dx.doi.org/10.30870/educhemia.v7i1.12637.

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Bernert, Dominika B., Indra Böhm, Kathrin Isenbügel, Lisa Schönenberg, and Helmut Ritter. "Hydrophobically modified poly[(divinyl ether)-co -(maleic anhydride)]: interactions with cyclodextrin derivatives and hydrogel formation." Polymer International 61, no. 3 (January 5, 2012): 413–17. http://dx.doi.org/10.1002/pi.3216.

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10

Kim, Su-Hwan, Hak Rae Lee, Seung Jung Yu, Min-Eui Han, Doh Young Lee, Soo Yeon Kim, Hee-Jin Ahn, et al. "Hydrogel-laden paper scaffold system for origami-based tissue engineering." Proceedings of the National Academy of Sciences 112, no. 50 (November 30, 2015): 15426–31. http://dx.doi.org/10.1073/pnas.1504745112.

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Анотація:
In this study, we present a method for assembling biofunctionalized paper into a multiform structured scaffold system for reliable tissue regeneration using an origami-based approach. The surface of a paper was conformally modified with a poly(styrene-co-maleic anhydride) layer via initiated chemical vapor deposition followed by the immobilization of poly-l-lysine (PLL) and deposition of Ca2+. This procedure ensures the formation of alginate hydrogel on the paper due to Ca2+ diffusion. Furthermore, strong adhesion of the alginate hydrogel on the paper onto the paper substrate was achieved due to an electrostatic interaction between the alginate and PLL. The developed scaffold system was versatile and allowed area-selective cell seeding. Also, the hydrogel-laden paper could be folded freely into 3D tissue-like structures using a simple origami-based method. The cylindrically constructed paper scaffold system with chondrocytes was applied into a three-ring defect trachea in rabbits. The transplanted engineered tissues replaced the native trachea without stenosis after 4 wks. As for the custom-built scaffold system, the hydrogel-laden paper system will provide a robust and facile method for the formation of tissues mimicking native tissue constructs.
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Дисертації з теми "MALEIC ANHYDRIDE HYDROGEL"

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JAIN, KRATIKA. "INVESTIGATION OF ACRYLAMIDE, MALEIC ANHYDRIDE HYDROGEL IMPREGNATED WITH POLY(VINYL) ALCOHOL." Thesis, 2017. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15913.

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Анотація:
Current investigation is focused on the synthesis of Acrylamide, Maleic Anhydride hydrogel matrix impregnated with Poly (vinyl alcohol), PVA, to obtain a formulation of hydrogel matrix with maximum water swelling property. Thus, series of products, varying the concentration of cross linker and PVA, were synthesized using redox initiator potassium persulphate at 70 oC. Spectroscopic, Thermal, Mechanical analysis and swelling behaviour of formed hydrogels were studied. Tremendous swelling behaviour (with swelling percentage 1409%) was by hydrogel with composition of 3% of Poly(vinyl) alcohol, 0.5% of crosslinker, 3.55 gm of acrylamide, 0.908gm of Maleic anhydride Present study also revealed that the addition of prepared hydrogels in small quantities to sandy soil increased its ability to retain water. The study was further extended with incorporation of antimicrobial activity in the hydrogel matrix by using different concentration of the product of natural origin ,Allium sativum.The results obtained were excellent as the use of Allium sativum juice (also known as garlic juice) in hydrogel matrix incorporated antimicrobial activity against plant pathogen (Agrobacterium tumefaciens) and human pathogen (Escherichia coli) without affecting swelling behaviour of matrix. The hydrogel with 3% PVA 3% Allium sativum juice 0.5% crosslinker, 3.55gm acrylamide, 0.908gm maleic anhydride shows best results amongs all the formed hydrogel as zone of inhibition in this hydrogel against Agrobacterium tumefaciens is 3.1 cm while against E.coli is 1.9 cm and and also shows highest water retention measurement.The maximum difference in percent of water evaporation loss with hydrogel PVA3%, Allium sativum juice3%, and one without hydrogel is approximately 41%. From thermal analysis it is found that the hydrogel remained unaffected from environmental stresses during the period of study of 2 months. Current study can lead to develop a new class of hydrogels that can be used in the agriculture field to provide continous cycle of irrigation and also provide protection to crops from pathogens.
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Частини книг з теми "MALEIC ANHYDRIDE HYDROGEL"

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Piticescu, Roxana M., Gabrielle Charlotte Chitanu, Aurelia Meghea, Maria Giurginca, Gabriela Negroiu, and Laura Madalina Popescu. "Comparative Study of In Situ Interactions between Maleic Anhydride Based Copolymers with Hydroxyl Apatite." In Bioceramics 20, 387–90. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-457-x.387.

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Тези доповідей конференцій з теми "MALEIC ANHYDRIDE HYDROGEL"

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Tarigan, Juliati Br, and Anggi Modesly Panjaitan. "Synthesis of galactomannan maleic ester from galactomannan Arenga pinnata Merr with maleic anhydride using microwave method and sodium hydrogen carbonate." In THE II INTERNATIONAL SCIENTIFIC CONFERENCE “INDUSTRIAL AND CIVIL CONSTRUCTION 2022”. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0149710.

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