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Water and temperature response of semi‐IPN hydrogels composed of chitosan and polyacrylonitrile
Author(s) -
Kim Seon Jeong,
Shin Su Ryon,
Lee Song Min,
Kim In Young,
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.12099
Subject(s) - polyacrylonitrile , sorption , self healing hydrogels , chitosan , relative humidity , interpenetrating polymer network , polymer chemistry , activation energy , materials science , glutaraldehyde , diffusion , chemical engineering , fick's laws of diffusion , polymer , chemistry , composite material , adsorption , thermodynamics , organic chemistry , engineering , physics
Temperature‐responsive semi‐interpenetrating polymer networks (semi‐IPNs) constructed with chitosan and polyacrylonitrile (PAN) were crosslinked with glutaraldehyde. The semi‐IPN determined the sorption behavior of water at several temperatures and at a relative humidity (RH) of 95% using a dynamic vapor sorption (DVS) system. Water diffusion coefficients of semi‐IPNs were calculated according to the Fickian Law at several temperatures and exhibited a relatively water uptake, 0.1–0.4 at room temperature. The water uptake of hydrogels depended on temperature. The apparent activation energy was dependent of the composition of the semi‐IPN with value of 32.8–34.8 kJmol −1 . © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 12: 2721–2724, 2003