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Thermal phase transition of poly( N ‐propionylethyleneimine) hydrogel
Author(s) -
Hua Jiadong,
Liu Yinfeng,
Hu Jun,
Wang Qinque,
Gong Zhenbang,
Guo Xizhang
Publication year - 1999
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/(sici)1097-4628(19991205)74:10<2457::aid-app14>3.0.co;2-x
Subject(s) - lower critical solution temperature , self healing hydrogels , polyacrylamide , swelling , polymer , polymer chemistry , interpenetrating polymer network , materials science , phase transition , chemical engineering , composite material , copolymer , thermodynamics , physics , engineering
This article presents the preparation of the hydrogel of poly( N ‐propionylethyleneimine) and its interpenetrating polymer network (IPN) hydrogel containing polyacrylamide by means of γ‐ray radiation and a study of the phase transition temperature of these hydrogels. As a result, the hydrogel of the crosslinked poly( N ‐propionylethyleneimine) exhibited swelling below and shrinking above the phase transition temperature (about 61°C), as well as the lower critical solution temperature (LCST) of the liner polymer–water system. The experiment also showed that the LCST of the IPN hydrogel could be adjusted by the incorporation of the second component polyacrylamide. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2457–2461, 1999