Bibliographies thématiques / SUPER ABSORBENT HYDROGEL

Littérature scientifique sur le sujet « SUPER ABSORBENT HYDROGEL »

Auteur : Grafiati
Publié le 11 septembre 2023

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Articles de revues sur le sujet "SUPER ABSORBENT HYDROGEL"

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MASUDA, Fusayoshi. « Some Charactors of Hydrogel from Super Absorbent Polymer ». Journal of the Japan Society of Colour Material 59, no 4 (1986) : 221–26. http://dx.doi.org/10.4011/shikizai1937.59.221.

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Asinas, Jane Aezel T., Juanito V. Bajar III, Jhon Rhandy Cabanes, Roy Joseph Domino, Gerardo A. D. Abestilla et Crispin S. Lictaoa. « UTILIZATION OF SUPER ABSORBENT POLYMERS (SAP) IN EXTENSIVE GREEN ROOF ASWATER RETENTION IN URBAN AREA ». Journal of BIMP-EAGA Regional Development 5, no 2 (30 décembre 2019) : 93–107. http://dx.doi.org/10.51200/jbimpeagard.v5i2.3272.

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A green roof is formed by waterproof substrate covered with vegetation. It is capable of absorbing water and adding hydrogels may increase its water absorption. The objective of this study is to utilize hydrogel in extensive green roof as an aid in water retention in urban areas. There are four green roof models: Panel 1 has 0% of hydrogels, Panel 2 has 0.40% of hydrogels, Panel 3 has 0.50% of hydrogels and Panel 4 has 0.60% of hydrogels. Each green roof model undergo series of test through the rain simulator with rain gauge at the center of the panel to determine the rainfall intensity. Other than the percentage of hydrogel;; rainfall intensity, duration of rain event and moisture content of the substrate before testing are the factors that affect the water retention in the green roof. This study shows that the green roof with hydrogel has greater water retention than the green roof without hydrogel. It is determined that the hydrogels can absorb approximately 330 times more than its own weight in a day and 37.048 seconds shows the most probable value of water run--off that may occur in the rain event based from the data collected in this study. It was concluded that the maximum value of water that the soil can absorb is entirely dependent on the time the water system was used. The result of the data analysis shows that each of the independent variable has a positive correlation to the dependent variable which is the volume of the water retained in the substrate.
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Jiang, Hai Ling. « Network Structure and Water Absorption of Soil Moisture Gel by Coarse-Grained Molecular Dynamics Simulations ». International Journal of Engineering Research in Africa 63 (30 mars 2023) : 1–12. http://dx.doi.org/10.4028/p-r8o1xc.

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With the wide application of hydrogel materials in agriculture, forestry, flexible electronics, electronic information engineering, environmental detection, flexible electronics, information science, technology and so on, the development of various new functional hydrogel materials has gradually become one of the research hotspots. At present, the research on hydrogel materials is mainly focused on the preparation of various functional hydrogels by experimental methods, there is no fundamental understanding of the relationship between the “stimulus-response” and its inner microstructures. In this paper, the author uses the molecular dynamics simulation method to study the evolution of the hydrogel’s microscopic network structure, the relationship between microstructure and water absorption of hydrogels in the processes of water swelling and “stimulus-response”. The next generation of new super absorbent, high toughness, high strength and other functional hydrogels could be synthesized by the guide of this study, and these new hydrogels have a promising future to apply in new fields of technology such as flexible electronics, and biological medicine.
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Lu, Xinkun, Ching Ying Chan, Ka I. Lee, Pui Fai Ng, Bin Fei, John H. Xin et Jun Fu. « Super-tough and thermo-healable hydrogel – promising for shape-memory absorbent fiber ». J. Mater. Chem. B 2, no 43 (2014) : 7631–38. http://dx.doi.org/10.1039/c4tb01289e.

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S., Iswariya, Bhanukeerthi A. V., Poornima Velswamy, Uma T. S. et Paramasivan Thirumalai Perumal. « Design and development of a piscine collagen blended pullulan hydrogel for skin tissue engineering ». RSC Advances 6, no 63 (2016) : 57863–71. http://dx.doi.org/10.1039/c6ra03578g.

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Sahmat, Siti Sahmsiah, Mohd Y. Rafii, Yusuff Oladosu, Mashitah Jusoh, Mansor Hakiman et Hasmah Mohidin. « A Systematic Review of the Potential of a Dynamic Hydrogel as a Substrate for Sustainable Agriculture ». Horticulturae 8, no 11 (2 novembre 2022) : 1026. http://dx.doi.org/10.3390/horticulturae8111026.

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Adopting environmentally friendly or green technology and incorporating new alternative substrates for a sustainable agricultural industry has garnered the attention of numerous researchers. Although super absorbent hydrogels have exhibited great potential, natural hydrogel-based absorbents have gained more interest due to their environmentally safe properties. The sources for the novel green polymer are easily obtained from agricultural wastes, such as polysaccharides, agarose, chitosan, and mucilage, with zero to minimal cost. The polymer also offers several attributes, including water usage and cost efficiencies, versatile application, and increasing plant growth. Furthermore, the polymer can act as a carrier agent and aid in improving the properties of planting mediums. The present review focuses on natural and chemical hydrogel-based polymers. It discusses their potential application in sustainable agriculture and the conservation of ecosystems by providing balanced protection for seeds, plants, and soil. Future perspectives based on previous investigations are also presented.
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Wu, Linjun, Siqi Huang, Jia Zheng, Zhongjie Qiu, Xuliang Lin et Yanlin Qin. « Synthesis and characterization of biomass lignin-based PVA super-absorbent hydrogel ». International Journal of Biological Macromolecules 140 (novembre 2019) : 538–45. http://dx.doi.org/10.1016/j.ijbiomac.2019.08.142.

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Li, Liang, Jixiang Guo et Chuanhong Kang. « LCST-UCST Transition Property of a Novel Retarding Swelling and Thermosensitive Particle Gel ». Materials 16, no 7 (30 mars 2023) : 2761. http://dx.doi.org/10.3390/ma16072761.

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Super absorbent resin particles used as profile control and water plugging agent remains a deficiency that the particles swells with high speed when absorbing water, resulting in low strength and limited depth of migration. To address this issue, we proposed a thermosensitive particle gel possessing the upper critical solution temperature (UCST), which was synthesized from hydrophobically modified poly(vinyl alcohol)s (PVA) with glutaraldehyde (GA) as a cross-linker. The structure of the hydrogel was characterized by Fourier transform infrared spectrophotometer (FTIR) and nuclear magnetic resonance (NMR). The thermosensitive-transparency measurement and swelling experiment show that the hydrophobic-modified PVA solutions and corresponding hydrogels exhibited thermosensitive phase transition behaviors with lower critical solution temperature (LCST) and UCST. The results indicated that the temperature-induced phase transition behavior of CHPVA hydrogels leads to their retarding swelling property and great potential as an efficient water plugging agent with excellent temperature and salt resistance.
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Lazaridou, Maria, Stavroula Nanaki, Alexandra Zamboulis, Chrysanthi Papoulia, Konstantinos Chrissafis, Panagiotis A. Klonos, Apostolos Kyritsis, Souzan Vergkizi-Nikolakaki, Margaritis Kostoglou et Dimitrios N. Bikiaris. « Super absorbent chitosan-based hydrogel sponges as carriers for caspofungin antifungal drug ». International Journal of Pharmaceutics 606 (septembre 2021) : 120925. http://dx.doi.org/10.1016/j.ijpharm.2021.120925.

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Lv, Qingyun, Min Wu et Yong Shen. « Enhanced swelling ratio and water retention capacity for novel super-absorbent hydrogel ». Colloids and Surfaces A : Physicochemical and Engineering Aspects 583 (décembre 2019) : 123972. http://dx.doi.org/10.1016/j.colsurfa.2019.123972.

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Thèses sur le sujet "SUPER ABSORBENT HYDROGEL"

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Panda, Smaranika. « Synthesis and Characterization of a Smart Super Absorbent Hydrogel ». Thesis, 2015. http://ethesis.nitrkl.ac.in/7316/1/Synthesis_Panda_2015.pdf.

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This research work aims to give an overview of the synthesis of a smart super absorbent semi interpenetrating hydrogel and their characterizations. The main objective is to mix polyacrylamide with Tamarind gum and to check how the parameters are varying to create a good strength sustained delivery system. We tried to optimize the process parameters of polyacrylamide and tamarind gum semi interpenetrating hydrogel. Swelling measurements were done and mechanical properties were investigated. Cyclic compression, creep & stress relaxation properties are observed. XRD and FTIR studies were analyzed, Biocompatibility is checked and cross linking density is calculated. Tamarind gum converted the polyacrylamide into a super absorbent. With the increasing concentration of tamarind gum, cross-link density increases. Addition of Tamarind gum increased the swelling capability of polyacrylamide gel and increased its pH sensitivity. From the mechanical test data, we can conclude that with increasing concentration of tamarind gum viscoelastic property is increased. From the XRD pattern, it is seen that the composite is highly amorphous. From the FTIR analysis, we can say that all the components used for making the composite are present. With the increasing concentration of tamarind gum, biocompatibility of the hydrogel increases
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YADAV, EKTA, et KOMAL PANDEY. « SYNTHESIS AND APPLICATION OF ZINC LOADED CARBOXYMETHYL TAMARIND KERNEL GUM AND XANTHAN GUM-BASED SUPERABSORBENT HYDROGELS TO INVESTIGATE THE EFFECT ON SESAME PLANT GROWTH ». Thesis, 2023. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19895.

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The novel superabsorbent hydrogel (SAH) was fabricated by interpenetrating xanthan gum and carboxymethyl tamarind kernel gum with sodium methacrylate. Various compositions of SAH were fabricated by varying the concentration of biopolymers, monomers, cross linker, and initiators. The structural morphology of SAH was characterized by FTIR, FE SEM, and TGA techniques. The swelling behavior of SAH was studied in different mediums viz. distilled water, 0.9 % NaCl, pH 4,9, and 12. Zinc Chloride was incorporate in SAH for the release zinc micronutrient. The Zinc Superabsorbent hydrogel was utilized for controlled-release studies of zinc micronutrients in soil and water. It was found that ZSAH showed 51.6 % release in water within 60 hours and 51.87 % release in soil within 60 days which were analyzed by atomic absorption spectroscopy (AAS) technique. Moreover, under the release kinetic studies, it was seen that the Korsmeyer-Peppas model fitted well in the zinc release pattern in soil and water. The estimated value of diffusion exponent (n) clearly indicated that the mechanism of zinc release followed fickian diffusion. Hence, the novel synthesized ZSAH acts as an excellent micronutrient carrier for agricultural applications.
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Chapitres de livres sur le sujet "SUPER ABSORBENT HYDROGEL"

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Awad, F., L. Kahl et R. Kluge. « Environmental aspects of sewage sludge and evaluation of super absorbent hydrogel under Egyptian conditions ». Dans Iron Nutrition in Soils and Plants, 91–97. Dordrecht : Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0503-3_13.

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Dwivedi, Poushpi, Shahid S. Narvi, Ravi Prakash Tewari et Dhanesh Tiwary. « Bioactive Silver/Chitosan-g-Polyacrylamide (Ag/CS-g-PAAm) Nanocomposite Hydrogel as Super Absorbent Polymeric (SAP) Material ». Dans Nanobiotechnology for Safe Bioactive Nanobiomaterials, 107–20. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003217343-5.

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Sathian, Aiswarya, Namitha Vijay, K. S. Joshy, Yogesh Bharat Dalvi et Fatima Mraiche. « Hydrogels : Smart Materials in Drug Delivery ». Dans Hydrogels - From Tradition to Innovative Platforms With Multiple Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104804.

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The prominence of hydrogels in various fields of life sciences is due to their significant and functional three-dimensional biopolymeric networks, which tend to imbibe water due to -OH, -CONH2, -SO3H, -CONH,-COOR groups which have a hydrophilic tendency enabling them to be an excellent super absorbent and remain insoluble in water. Hydrogels can embed physiologically active molecules in their water-swollen network and are appealing materials for the controlled release of medicines. Several significant advancements in the realm of hydrogels for therapeutic delivery have resulted from recent advances in organic and polymer chemistry, bioengineering, and nanotechnology. We offer our perspective on the state-of-the-art in the field in this chapter, focusing on several intriguing issues such as current trends in hydrogel-based drug delivery, stimuli-responsive hydrogels, nanogels, and therapeutic release from 3D printed hydrogels. We also discuss the obstacles that must be solved to promote translation from academia to the clinic, as well as our predictions for the future of this quickly changing field of research.
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« Removal of Cr (VI) from Aqueous Solution by Super Absorbent Poly [N, N-DAPB/N, N-DMAAM/PNAAC] Hydrogels ». Dans Micro- and Nanostructured Polymer Systems, 183–202. Apple Academic Press, 2016. http://dx.doi.org/10.1201/b19859-17.

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Actes de conférences sur le sujet "SUPER ABSORBENT HYDROGEL"

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Haraguchi, Kazutoshi, et Toru Takehisa. « Novel Manufacturing Process of Nanocomposite Hydrogel For Bio-Applications ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80533.

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A novel class of nanocomposite hydrogels (NC gels) with a unique organic / inorganic network structure was synthesized by in-situ free-radical polymerization of N-isopropylacrylamide (NIPA) or N,N-dimethylacrylamide (DMAA) in the presence of inorganic clay (hectorite). Since NC gels are composed of a unique organic / inorganic network structure, which consists of exfoliated clay platelets uniformly dispersed in an aqueous medium with a number of flexible polymer chains linking them together, NC gels exhibit high transparency, high degrees of swelling, and superb mechanical properties with extraordinarily large deformations. Also, NC gels formed from thermo-sensitive polymers, e.g. PNIPA, exhibit rapid temperature-response in transparency and gel volume (de-swelling) at the lower critical solution temperature (LCST). All the properties of NC gels are very different from those of conventional, chemically-crosslinked hydrogels (OR gels). Here, we evaluated various properties of NC gels from a biomaterials point of view, such as mechanical toughness (capable of sewing), absorption (water and saline), purification and extraction, drying (effect of cover film), coexistence of absorption and drying, sterilization (by autoclave and γ-ray irradiation), preliminary implantation (implanted to rabbit intramuscularly) and blood compatibility. These results indicate that NC gels are promising as soft biomaterials with blood compatibility as well as high transparency, absorbing power and mechanical properties.
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