Swelling processes in aqueous polymer solutions by PCS and Raman scattering

被引：4

作者：

Branca, C

Faraone, A

Magazù, S

Maisano, G

Migliardo, P

Villari, V

机构：

[1] Univ Messina, Dipartimento Fis, I-98166 Messina, Italy

[2] Univ Messina, INFM, I-98166 Messina, Italy

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1999年 / 482卷

关键词：

PEO; D-LAM; diffusion coefficient; Raman; PCS;

D O I：

10.1016/S0022-2860(98)00884-9

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 purpose of the present work is to show how the joint employment of Raman scattering and Photon Correlation Spectroscopy (PCS), can furnish helpful information for a better comprehension of the properties of poly(ethylene oxide) in aqueous solutions. The analysis of the Raman D-LAM (Disordered Longitudinal Acoustic Mode) spectral contribution as a function of temperature reveals a slight center frequency decrease and a broadening of the D-LAM mode up to 45 degrees C. These findings, if interpreted in conjunction with PCS results, show a temperature dependence of the effective interactions between monomer units and an increase of the swollen coil size up to T = 45 degrees C. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：503 / 507

页数：5

共 12 条

[1]

Bailey F.E., 1976, Poly(Ethylene Oxide)

[2]

Barnes A.C., 1987, CHEM PHYS LETT, V142, P404

[3]

Berne B.J., 2000, DOVER BOOKS PHYS SER

[4] RAYLEIGH WING AND FOURIER-TRANSFORM INFRARED STUDIES OF INTERMOLECULAR AND INTRAMOLECULAR HYDROGEN-BONDS IN LIQUID ETHYLENE-GLYCOL [J].