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Preparation of thermosensitive and superabsorbent polymer hydrogels from trialkyl‐4‐vinylbenzyl phosphonium chloride‐ N ‐isopropylacrylamide‐ N,N ′‐methylenebisacrylamide copolymers and their properties
Author(s) -
aka Takamasa,
Watanabe Tsutomu,
Kawabata Tadashi,
Kurihara Seiji
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20010103)79:1<115::aid-app140>3.0.co;2-f
Subject(s) - superabsorbent polymer , copolymer , phosphonium , self healing hydrogels , polymer chemistry , alkyl , materials science , swelling , chemistry , polymer , organic chemistry , composite material
Thermosensitive and superabsorbent polymer hydrogels were synthesized by copolymerization of three kinds of tri‐ n ‐alkyl vinylbenzyl phosphonium chlorides (TRVB) with different lengths of alkyl chains, N ‐isopropylacrylamide (NIPAAm), and N,N ′‐methylenebisacrylamide (MBAAm). The water‐absorption ability and antibacterial activity of the hydrogels against Staphylococcus aureus ( S. aureus ) were investigated. The water content of TRVB–NIPAAm–MBAAm copolymers decreased with increasing temperature and increased with increasing phosphonium groups in the copolymers, while it decreased with increasing chain length of the alkyl groups in the phosphonium groups as well as with an increasing degree of crosslinking in the copolymers. The TRVB–NIPAAm–MBAAm copolymers with a higher TRVB content in the copolymers exhibited higher antibacterial activity against S. aureus , but decreased with increasing chain length of alkyl groups in phosphonium groups. The TRVB–NIPAAm–MBAAm copolymers exhibited the highest antibacterial activity at 30°C against S. aureus in deionized water. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 115–124, 2001