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24 de jun. de 2024 · Polyvinyl alcohol (PVA)–bacterial succinoglycan (SG) biodegradable films were developed through a solvent-casting method. Effects of the PVA/SG ratio on the thickness, transmittance, water holding capacity, and structural and mechanical properties were investigated by various analytical methods.
24 de jun. de 2024 · the mechanical properties of EPS-based films, polyvinyl alcohol (PVA) is usually chosen as the matrix because of its excellent film-forming properties, biocompatibility, and degrad-ability. PVA is a widely used water-soluble and biodegradable synthetic polymer with many hydroxyl groups in its molecular chain.
17 de jun. de 2024 · However, currently, the majority of studies on polyvinyl alcohol-engineered cementitious composites (PVA-ECC) have focused primarily on the influence of a single factor, such as the PVA fiber content, on the properties of materials, while research that elucidates the interplay between the mechanical properties of PVA-ECC and various mix ...
Hace 3 días · 3 meses durará la visita del doctorando Enrique Francés (programa de doctorado en Química de la Universidad de Castilla la Mancha -UCLM-), quien tiene como objetivo trabajar en la preparación de nuevos materiales basados en hidrogeles compuestos por la mezcla PVA (Polivinil alcohol) y alcoholes de origen natural para estudiar sus propiedades mecánicas, termodinámicas y biológicas, los ...
13 de jun. de 2024 · The optimized mechanical properties tensile strength appear at the ratio of (PVA/CA): (Starch) 1:1 was 37.17 ± 1.04 MPa. Using both amylase and cellulase enzymes at the same blend of the polymer best biodegradability that resulted in releasing 131.5 mg/dl of glucose units.
25 de jun. de 2024 · Introduction. The concrete panel of the concrete-faced rockfill dam (CFRD) is the main anti-seep-age structure of the dam body, and the safety of the panel is related to the overall stability of the dam [1,2]. Compared to other dam types, CFRD has significant advantages in terms of adaptability, safety, and economy.
Hace 3 días · Polyvinyl alcohol (PVOH) is a hydrophilic linear polymer that forms copolymers of vinyl alcohol and vinyl acetate. It is prepared by alkaline hydrolysis. It is known to possess high mechanical strength, biocompatibility, and non-toxicity.
![Chemical structure of polyvinyl alcohol (PVA) [1]. | Download ...](https://cl.images.search.yahoo.com/search/images?p=polyvinyl+alcohol+propiedades+mec%C3%A1nicas&ei=UTF-8&age=1m&fr=yhs-Elex-elex_22find&th=94.3&tw=113.8&imgurl=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FNabeel-Bakr%2Fpublication%2F323808560%2Ffigure%2Ffig1%2FAS%3A631581773402120%401527592237154%2FFigure-1-Chemical-structure-of-polyvinyl-alcohol-PVA-1.png&rurl=https%3A%2F%2Fwww.researchgate.net%2Ffigure%2FFigure-1-Chemical-structure-of-polyvinyl-alcohol-PVA-1_fig1_323808560&size=2KB&name=Chemical+structure+of+polyvinyl+alcohol+%28PVA%29+%5B1%5D.+%7C+Download+...&oid=3&h=203&w=245&turl=https%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.-7DI7fXickOeHff2GOlypAAAAA%26pid%3DApi%26rs%3D1%26c%3D1%26qlt%3D95%26w%3D113%26h%3D94&tt=Chemical+structure+of+polyvinyl+alcohol+%28PVA%29+%5B1%5D.+%7C+Download+...&sigr=IVnkgum6QO35&sigit=BSpAntYEFMUh&sigi=3GkENZHI5aGw&sign=qGKJ2EnNwHDj&sigt=qGKJ2EnNwHDj "Chemical structure of polyvinyl alcohol (PVA) [1]. | Download ...")
