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Poly(acrylic acid)–poly(vinyl alcohol) copolymers with superabsorbent properties

✍ Scribed by Ankush B. Argade; Nicholas A. Peppas

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
289 KB
Volume
70
Category
Article
ISSN
0021-8995

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✦ Synopsis

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 crosslinked polyacrylates that could swell in water. Their swelling behavior was determined under load. Degradation studies were performed in ␣-chymotrypsin, trypsin, and papain solutions.

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Interpenetrating polymer networks (IPNs) composed of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAAc) exhibited electrical-sensitive behavior. PAAc as an initial network was prepared inside a PVA solution using UV irradiation; then, PVA networks as a secondary network were formed by a repetit