SURFACE-MODES ON POLYMER-SOLUTIONS BY SURFACE LIGHT-SCATTERING TECHNIQUES

被引：24

作者：

CAO, BH ^{[1
]}

KIM, MW ^{[1
]}

SCHAFFER, H ^{[1
]}

CUMMINS, HZ ^{[1
]}

机构：

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

来源：

JOURNAL OF CHEMICAL PHYSICS | 1991年 / 95卷 / 12期

关键词：

D O I：

10.1063/1.461160

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：

By using the surface heterodyne spectroscopy, we study the surface modes on polymer solutions of polyisobutylene/decane at different concentrations. For each concentration, we measure the power spectra at various wave numbers (110.0-600.0 cm-1). We find that the relation between the frequency shift omega-k of the power spectrum and wave number k changes continuously from omega-k is-proportional-to k when concentration of the polymer solution is changed from 0.5 g/dl to 8.0 g/dl. For the low-concentration polymer solutions, the surface modes are capillary modes (omega-k is-proportional-to k3/2). For the high-concentration polymer solutions, the surface modes are elastic modes (omega-k is-proportional-to k). This result is compared with the theory [J. L. Harden, H. Pleiner, and P. A. Pincus, J. Chem. Phys. 94, 5208 (1991)].

引用

页码：9317 / 9321

页数：5

共 16 条

[1] SURFACE LIGHT-SCATTERING STUDY OF VINYL STEARATE AND POLYVINYL STEARATE) MONOLAYERS AT THE AIR-WATER-INTERFACE [J].