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Synthesis and characterization of sodium alginate/acrylamide semi‐interpenetrating polymer networks
Author(s) -
Şolpan Dilek,
Torun Murat
Publication year - 2006
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.23113
Subject(s) - self healing hydrogels , swelling , acrylamide , sodium alginate , diffusion , polymer chemistry , polymer , sodium , chemistry , materials science , composite material , physics , monomer , thermodynamics , organic chemistry
Sodium alginate (NaAlg)/acrylamide (AAm) semi‐interpenetrating polymer networks (IPNs) were prepared with three different compositions, in which the NaAlg concentration was 1, 2, or 3% (w/v) in 50% (w/v) AAm solutions. These solutions were irradiated with a 60 Co γ source at different doses. The conversion percentage was determined as follows. The NaAlg/AAm IPN hydrogels were immersed to swell in a solution of the desired pH (3–9) at 25°C. The swelling results at pHs 7.0 and 9.0 indicated that the NaAlg/AAm IPN hydrogel containing 3% NaAlg showed the maximum swelling percentage in water. The diffusion of water within the NaAlg/AAm IPN hydrogels was non‐Fickian in character. The diffusion coefficients of the NaAlg/AAm IPN hydrogels in water were calculated. The thermal properties of NaAlg, polyacrylamide, and NaAlg/AAm IPNs were determined. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100:335–342, 2006