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Citation: Liu Shou-Xin, Fang Yu, Hu Dao-Dao, Lv Hong-Wang. Complexation between Poly(methacrylic acid) and Cationically Modified Polyacrylamide[J]. Acta Physico-Chimica Sinica, ;2000, 16(03): 214-220. doi: 10.3866/PKU.WHXB20000305 shu

Complexation between Poly(methacrylic acid) and Cationically Modified Polyacrylamide

1.
Department of Chemistry,Shanxi Normal University,Xi'an 710062

Received Date: 12 July 1999
Available Online: 15 March 2000

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.
- Fluorescence anisotropy,
- Complexation,
- Poly(methacrylic acid),
- Cationically modified polyacrylamide
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