Surface properties of polyacid-poly(N-vinyl pyrrolidone) complexes

被引：1

作者：

Shaikhutdinov, EM ^{[1
]}

Abdiev, KZ ^{[1
]}

Zhursumbaeva, MB ^{[1
]}

Khusain, SK ^{[1
]}

机构：

[1] Satpaev Kazakh Natl Tech Univ, Almaty 480013, Kazakhstan

来源：

COLLOID JOURNAL | 2001年 / 63卷 / 06期

关键词：

Free Energy; Surface Tension; Relaxation Time; Macromolecule; Surface Property;

D O I：

10.1023/A:1013240423994

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of the complexation of polyacrylic (PAA) and polymethacrylic (PMAA) acids with poly(N-vinyl pyrrolidone) (PVP) on their surface properties was studied by measuring surface tension, conductivity, and the viscosity of aqueous mixed polymer solutions, as well as by the potentiometric titration at 293.15 K. The values of relaxation times and the surface activity of polycomplexes were calculated from kinetic data and the surface tension isotherms of the solutions. The complexation was found to increase the surface layer relaxation time, surface activity, and the ability of the macromolecules to reduce the surface tension of solvent. The values of adsorption free energy were calculated for PVP and polycomplexes. They were equal to -22.0, -23.0, and -24.8 kJ/base-mole (per one mole of PVP monomer unit) for PVP and PMAA-PVP and PAA-PVP polycomplexes, respectively.

引用

页码：779 / 783

页数：5

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