SURFACE-WAVES ON POLYMER-SOLUTIONS - COMPLETE CAPILLARY WAVE-ELASTIC WAVE CROSSOVER

被引：26

作者：

CAO, BH ^{[1
]}

KIM, MW ^{[1
]}

CUMMINS, HZ ^{[1
]}

机构：

[1] CUNY CITY COLL,DEPT PHYS,NEW YORK,NY 10031

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 102卷 / 23期

关键词：

D O I：

10.1063/1.468805

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：

We study the surface waves of polyethyleneoxide (PEO) in water by surface heterodyne light scattering. The complete capillary wave-elastic wave crossover is observed as the polymer concentration is increased. At high polymer concentrations, the peak frequencies of the experimental power spectra increase as the polymer concentration is increased, while the corresponding frequency widths decrease as the polymer concentration is increased. This unusual behavior of peak frequency and frequency width results from the strong viscoelasticity of the bulk which gives the additional restoring force of the surface waves at high polymer concentrations, as predicted by Harden et al.'s [J. Chem. Phys. 94, 5208 (1991)] theoretical calculation. Furthermore, the adsorbed monolayer of 1000 K PEO appears to have no effect on the surface waves. © 1995 American Institute of Physics.

引用

页码：9375 / 9379

页数：5

共 7 条

[1] SURFACE-MODES ON POLYMER-SOLUTIONS BY SURFACE LIGHT-SCATTERING TECHNIQUES [J].