Study of Hydrophobic and Barrier Properties of Vinyltriethoxysilane Modified Poly (Vinyl Alcohol) / Poly (Acrylic Acid) Films
نویسندگان
چکیده
منابع مشابه
Poly(acrylic acid)–Poly(vinyl alcohol) Copolymers with Superabsorbent Properties
Biodegradable polyacrylates were produced by a series of novel copolymerization and/or crosslinking techniques using poly(vinyl alcohol) (PVA) moieties modified by the incorporation of olefinic structures. PVA was modified by a tosylation and/or detosylation reaction. The functionalized PVA was copolymerized and/or crosslinked with acrylic acid or its partially neutralized form to give crosslin...
متن کاملSynthesis of pH Sensitive Hydrogels Based on Poly Vinyl Alcohol and Poly Acrylic Acid
In this research, hydrogels based on poly vinyl alcohol and poly acrylic acid blend were prepared which were cross-linked by applied thermal conditions. Afterward, effects of time and heating on water uptake were investigated. The highest water uptake value exhibited by the sample that was heated for 20 min. at 110 ºC was about 2129% after 4 days at equilibrium state. Hydrogels exhibited p...
متن کاملSemicrystalline poly(vinyl alcohol) films and their blends with poly(acrylic acid) and poly(ethylene glycol) for drug delivery applications
Semicrystalline films of poly(vinyl alcohol) (PVA) were prepared by annealing amorphous PVA films at temperatures above the glass transition temperature of 85°C, thus allowing the macromolecules to form crystallites, which stabilized the films and made them behave as if they were chemically cross-linked. Films were prepared by casting a 15% aqueous PVA solution onto glass slides and annealing t...
متن کاملsynthesis of ph sensitive hydrogels based on poly vinyl alcohol and poly acrylic acid
in this research, hydrogels based on poly vinyl alcohol and poly acrylic acid blend were prepared which were cross-linked by applied thermal conditions. afterward, effects of time and heating on water uptake were investigated. the highest water uptake value exhibited by the sample that was heated for 20 min. at 110 ºc was about 2129% after 4 days at equilibrium state. hydrogels exhibited ph-sen...
متن کاملThe Plasticizing Mechanism and Effect of Aluminium Chloride and Glycerin on Poly(vinyl alcohol) Films
Poly(Vinyl Alcohol) (PVA) films were prepared with AlCl3·6H2O/glycerin and AlCl3·6H2O/poly glycerin as two kinds of complex plasticizer. The micromorphology of pure PVA film and PVA films plasticized with complex plasticizer was observed by Scanning Electron Microscope (SEM). The interaction between complex plas...
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ژورنال
عنوان ژورنال: Clean Technology
سال: 2012
ISSN: 1598-9712
DOI: 10.7464/ksct.2012.18.1.057