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Citation:
Zhang Jian-He. Stimuli-response of Hydrophilic-hydrophobic Semi-IPN Hydrogels on Temperature[J]. Acta Physico-Chimica Sinica,
;2003, 19(01): 90-93.
doi:
10.3866/PKU.WHXB20030121
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The Stimuli-response of hydrophilic-hydrophobic semi-IPN hydrogels consisting of polyacrylic acid (PAAc)/ poly(N-dodecyl-4-vinyl pyridinium bromide) (QPVPD) with temperature was investigated in weak alkaline and acid solution .Swelling ratio (SR) of the gels increases slowly with the increasing of temperature initially, and reaches a maximum at 28 ℃,then decreases rapidly, and reaches a minimum at 32.5 ℃.This phenomenon is mainly explained by the dissociation of hydrogen bonding in PAAc network and hydrophobic interaction of QPVPD.
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