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Synthesis and Properties of Poly(N‐isopropylacrylamide‐co‐acrylamide) Hydrogels
Author(s) -
Chen Jie,
Pei Yong,
Yang LiMing,
Shi LiLi,
Luo HaoJie
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550709
Subject(s) - lower critical solution temperature , acrylamide , self healing hydrogels , poly(n isopropylacrylamide) , swelling , aqueous solution , aqueous medium , polymer chemistry , ionic strength , polymerization , chemical engineering , materials science , chemistry , nuclear chemistry , polymer , copolymer , composite material , organic chemistry , engineering
Poly (N‐isopropylacrylamide‐co‐acrylamide) [Poly(NIPAAm‐co‐AAm)] with different feed ratios were obtained by radiation polymerization using Co 60 γ‐rays. Swelling equilibrium data in various media: deionized water, aqueous NaCl solutions and different pH buffer solutions, were determined. It appeared that the lower critical transition temperature (LCST) of the hydrogels increased with an increasing acrylamide content and decreased with increasing ionic strength. Moreover, LCST was affected by pH.