LASER SCATTERING PHOTOGONIOMETER

被引：15

作者：

EINAGA, Y

MITANI, T

HASHIZUME, J

FUJITA, H

机构：

[1] Department of Polymer Science, Osaka University, Toyonaka, Osaka

来源：

POLYMER JOURNAL | 1979年 / 11卷 / 07期

关键词：

He-ne laser; Light scattering photogoniometer; Mean square radius of gyration; Microcomputer; Photon counting; Polystyrene; Rayleigh ratio; Refractive index increment; Second virial coefficient; Weight-average molecular weight;

D O I：

10.1295/polymj.11.565

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A computer-operated light scattering photogoniometer with a He–Ne laser (632.8 nm) as the light source was constructed, and the conditions for acquiring and processing data were investigated. The major features of the instrument are as follows. (1) Intensities of scattered light can be measured at a scattering angle as low as 5°. (2) A photon counting method is used for the measurement of scattering intensities. (3) Data acquisition and processing as well as the scanning of the photomultiplier over a specified range of scattering angles can be made with the aid of an on-line microcomputer. This instrument is tested with low-and high-molecular-weight polystyrene samples in benzene. © 1979, The Society of Polymer Science, Japan. All rights reserved.

引用

页码：565 / 574

页数：10

共 18 条

[1] THERMODYNAMIC AND CONFORMATIONAL PROPERTIES OF POLYSTYRENE .I. LIGHT-SCATTERING STUDIES ON DILUTE SOLUTIONS OF LINEAR POLYSTYRENES [J].