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Synthesis and properties of radiation‐induced acrylamide–acrylic acid hydrogels
Author(s) -
Şolpan Dilek,
Duran Sibel,
Güven Olgun
Publication year - 2002
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.11176
Subject(s) - self healing hydrogels , acrylamide , swelling , acrylic acid , diffusion , polymer chemistry , materials science , chemical engineering , fick's laws of diffusion , chemistry , nuclear chemistry , composite material , polymer , copolymer , thermodynamics , physics , engineering
Acrylamide (AAm)/acrylic acid (AAc) hydrogels in the cylindirical form were prepared by γ‐irradiating binary systems of AAm/AAc with 2.6–20.0 kGy γ‐rays. The effect of the dose and relative amounts of AAc and pH on the swelling properties, diffusion behavior of water, diffusion coefficients, and network properties of hydrogel systems was investigated. The swelling capacities of AAm/AAc hydrogels were in the range of 1000–3000%, while poly(acrylamide) (PAAm) hydrogels swelled in the range of 450–700%. Water diffusion into hydrogels was found to be non‐Fickian‐type diffusion. Diffusion coefficients of AAm/AAc hydrogels were found between 0.79 × 10 −5 and 2.78 × 10 −5 cm 2 min −1 . © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3570–3580, 2002