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Preparation and characterization of thermosensitive poly( N ‐isopropylacrylamide)/poly(ethylene oxide) semi‐interpenetrating polymer networks
Author(s) -
Kim Seon Jeong,
Lee Chang Kee,
Lee Young Moo,
Kim Sun I.
Publication year - 2003
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/app.13029
Subject(s) - self healing hydrogels , differential scanning calorimetry , swelling , ethylene oxide , interpenetrating polymer network , materials science , poly(n isopropylacrylamide) , polymer chemistry , polymer , fourier transform infrared spectroscopy , chemical engineering , lower critical solution temperature , poly ethylene , copolymer , chemistry , ethylene , composite material , organic chemistry , catalysis , physics , engineering , thermodynamics
Temperature‐sensitive poly( N ‐isopropylacrylamide) hydrogels were successfully synthesized by using poly(ethylene oxide) as the interpenetrating agent. The newly prepared semi‐interpenetrating polymer network (semi‐IPN) hydrogels exhibited much better properties as temperature‐sensitive polymers than they did in the past. Characterizations of the IPN hydrogels were investigated using a swelling experiment, FTIR spectroscopy, and differential scanning calorimetry (DSC). Semi‐IPN hydrogels exhibited a relatively high temperature dependent swelling ratio in the range of 23–28 at room temperature. DSC was used for the determination of the lower critical solution temperature of the semi‐IPN hydrogel. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3032–3036, 2003