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Swelling characterizations of chitosan and polyacrylonitrile semi‐interpenetrating polymer network hydrogels
Author(s) -
Kim Seon Jeong,
Shin Su Ryon,
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.11699
Subject(s) - self healing hydrogels , polyacrylonitrile , swelling , interpenetrating polymer network , differential scanning calorimetry , chitosan , fourier transform infrared spectroscopy , materials science , polymer chemistry , chemical engineering , polymer , composite material , physics , engineering , thermodynamics
Temperature‐ and pH‐responsive semi‐interpenetrating polymer network (semi‐IPN) hydrogels constructed with chitosan and polyacrylonitrile (PAN) were studied. The characterizations of semi‐IPN hydrogels were investigated using Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). IPN hydrogels exhibited a relatively high swelling ratio, 23.31%–145.20% at room temperature. The swelling ratio of hydrogels depends on pH and temperature. DSC was used to determine the amount of free water in IPN hydrogels. The amount of free water increased with increasing chitosan content in the semi‐IPN hydrogels. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 87: 2011–2015, 2003