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Preparation of fast responsive, temperature‐sensitive poly( N‐ isopropylacrylamide) hydrogel
Author(s) -
Zhang XianZheng,
Zhuo RenXi
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19991201)200:12<2602::aid-macp2602>3.0.co;2-t
Subject(s) - poly(n isopropylacrylamide) , lower critical solution temperature , self healing hydrogels , swelling , polymer chemistry , polymerization , chemical engineering , materials science , chemistry , polymer , copolymer , composite material , engineering
A new poly( N ‐isopropylacrylamide) (PNIPA) hydrogel was prepared by decreasing the temperature of polymerization/crosslinking reaction below the freezing point (–18°C). This PNIPA hydrogel shows a large swelling ratio at room temperature and exhibits a fast deswelling and reswelling rate in response to external temperature changes. These properties are attributed to the macroporous and regularly arranged network of this PNIPA hydrogel.