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Thermosensitive hydrogels from copolymers of N ‐isopropylacrylamide and anionic monomers
Author(s) -
Wang Changhua,
Cao Weixiao
Publication year - 1996
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199612)41:4<449::aid-pi639>3.0.co;2-m
Subject(s) - copolymer , swelling , self healing hydrogels , monomer , polymer chemistry , potassium , chemistry , salt (chemistry) , poly(n isopropylacrylamide) , tetramethylethylenediamine , materials science , organic chemistry , polymer , composite material
Thermosensitive hydrogels containing anionic monomer have been prepared from copolymerization of N ‐isopropylacrylamide and 3‐sulphopropylacrylate potassium salt, 3‐sulphopropylmethacrylate potassium salt and 2‐acrylamido‐2‐methyl‐1‐propanesulphonic acid in the presence of N , N ′‐methylene‐bisacrylamide as crosslinking agent with potassium persulphate/ N , N , N ′, N ′,‐tetramethylethylenediamine as initiator in water at room temperature. The swelling behaviour and volume transition temperature of the gels containing different anionic monomers were studied. It was found that with increasing content of anionic monomer, the swelling ratio as well as the volume transition temperature of the gel increased. The swelling behaviour of the gels in salt‐containing water was investigated.