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Swelling kinetics of poly(acrylamide)/poly(mono‐ n ‐alkyl itaconates) hydrogels
Author(s) -
Katime I.,
Velada J. L.,
Novoa R.,
de Apodaca E. Díaz,
Puig J.,
Mendizabal E.
Publication year - 1996
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199608)40:4<281::aid-pi555>3.0.co;2-h
Subject(s) - self healing hydrogels , swelling , polymer chemistry , kinetics , monomer , acrylamide , alkyl , solvent , hydrogen bond , chemistry , polymer , chemical engineering , materials science , organic chemistry , molecule , composite material , physics , quantum mechanics , engineering
Hydrogels of mono‐ n ‐alkyl itaconate/ N ‐acrylamide have been synthesised. The swelling process at three different pH values (acid, neutral and basic) has been studied. The experimental data indicate that our hydrogels follow second‐order swelling kinetics. According to this, the kinetic constant, K ∞ , and the swelling capacity at equilibrium, W ∞ , have been calculated. The influence of the solvent pH and the molar mass of the mono‐ n ‐alkyl itaconate monomeric unit has been analysed. It seems that the general balance between the hydrogen bonding and the hydrophobic interactions regulates the swelling process of these hydrogels.