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Swelling behaviors of ionic poly( N,N ‐dimethylacrylamide‐ co ‐acrylamide) hydrogels in various media
Author(s) -
Çaykara Tuncer,
Akçakaya İlkay
Publication year - 2007
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.24313
Subject(s) - itaconic acid , self healing hydrogels , swelling , ammonium persulfate , acrylamide , polymer chemistry , polyelectrolyte , chemistry , nuclear chemistry , chemical engineering , polymer , copolymer , organic chemistry , polymerization , engineering
Polyelectrolyte hydrogels were synthesized from N,N ‐dimethylacrylamide, acrylamide, and itaconic acid with ammonium persulfate as a free‐radical initiator in the presence of methylene(bis)acrylamide as a crosslinker. The swelling behavior of the ionic poly( N,N ‐dimethylacrylamide‐ co ‐acrylamide) hydrogels was investigated in pure water, in KSCN solutions with pHs 4 and 9, and in water–acetone mixtures according to the itaconic acid content in the hydrogel. The pulsatile swelling behavior of these hydrogels was studied both in water–acetone and in pH 2–9 buffer solutions. Although the equilibrium swelling ratio of the hydrogels with low concentrations of itaconic acid was almost not affected by changes in the temperature, the equilibrium swelling ratio of the hydrogels with high concentrations of itaconic acid increased in the temperature range of 20–50°C. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2140–2145, 2007