聚甲基丙烯酸与修饰聚丙烯酰胺间的络合作用

doi:10.3866/PKU.WHXB20000305

Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (03): 214-220.doi: 10.3866/PKU.WHXB20000305

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Complexation between Poly(methacrylic acid) and Cationically Modified Polyacrylamide

Liu Shou-Xin, Fang Yu, Hu Dao-Dao, Lv Hong-Wang

Department of Chemistry,Shanxi Normal University,Xi'an 710062

Received:1999-07-12 Revised:1999-09-10 Published:2000-03-15
Contact: Fang Yu

Abstract

Abstract:

The complexation between poly(methacrylic acid)(PMAA) and cationically modified polyacrylamide(QCPAM) was investigated by fluorescence anisotropy measurements, fluorescence probe studies and fluorescence quenching techniques. It has been demonstrated that the complexation occurs between pH 2 and 8, and the best conditions for complexation are pH 4 and complex ratio 1:1(PMAA:QCPAM, in monomer unit). In addition, along with the complexation, the conformation of PMAA changed dramatically. The pH and complexation dependences of the conformation of PMAA may find some uses in design and synthesis of “intelligent” polyelectrolyte gels.

Key words: Fluorescence anisotropy, Complexation, Poly(methacrylic acid), Cationically modified polyacrylamide

Liu Shou-Xin, Fang Yu, Hu Dao-Dao, Lv Hong-Wang. Complexation between Poly(methacrylic acid) and Cationically Modified Polyacrylamide[J].Acta Phys. -Chim. Sin., 2000, 16(03): 214-220.

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Complexation between Poly(methacrylic acid) and Cationically Modified Polyacrylamide

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