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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 shu

Stimuli-response of Hydrophilic-hydrophobic Semi-IPN Hydrogels on Temperature

Zhang Jian-He

1.
Department of Chemistry and Chemical Engineering, Xinyang Teachers College, Xinyang　464000

Received Date: 15 May 2002
Available Online: 15 January 2003

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.
- Hydrogel;Semi-IPN;Temperature-response;Swelling
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