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Ionizable interpenetrating polymer networks of carboxymethyl cellulose and polyacrylic acid: Evaluation of water uptake
Author(s) -
Bajpai A. K.,
Mishra Abhilasha
Publication year - 2004
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.20674
Subject(s) - polyacrylic acid , carboxymethyl cellulose , interpenetrating polymer network , aqueous solution , swelling , sorption , polymer chemistry , polymer , cellulose , polyelectrolyte , materials science , chemical engineering , chemistry , nuclear chemistry , adsorption , composite material , organic chemistry , sodium , engineering , metallurgy
A semi interpenetrating polymer network (IPN) of carboxymethyl cellulose (CMC) and crosslinked polyacrylic acid (PAA) has been prepared and its water‐sorption capacity has been evaluated as a function of chemical architecture of the IPN, pH, and temperature of the swelling medium. The water uptake potential of the IPNs has also been investigated in inorganic salt containing aqueous solutions and simulated biological fluids. The IPN was characterized by IR spectral analysis, and the network parameters such as average molecular weight between crosslinks (M c ), crosslink density (q), and number of elastically effective chains (V e ) have been evaluated by water‐sorption measurements. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 2054–2065, 2004