An integrated Couette system for in situ shearing of polymer and surfactant solutions and gels with simultaneous small angle x-ray scattering

被引：34

作者：

Pople, JA

Hamley, IW ^{[1
]}

Diakun, GP

机构：

[1] Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England

[2] Daresbury Lab, CLRC, Warrington WA4 4AD, Cheshire, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1998年 / 69卷 / 08期

关键词：

D O I：

10.1063/1.1149049

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A Couette cell designed for in situ small angle x-ray scattering (SAXS) studies of polymeric systems under shear is described. Representative results are presented for the effect of shear on the lamellar phase of a concentrated poly(oxyethylene)-poly(oxybutylene) diblock copolymer in aqueous solution. It is shown that the application of shear resulted in a reduction in the lamellar spacing and of the defect density. The former was observed as a shift in the principal peak position in the SAXS pattern, and the latter as an increase in the associated correlation length. It was further shown that the cessation of shear led to a relaxation of both shear induced effects, over a time period of hours. (C) 1998 American Institute of Physics.

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收藏

页码：3015 / 3021

页数：7

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