Early stages of oligomer-polymer diffusion

被引：16

作者：

Bucknall, DG

Higgins, JS

Butler, SA

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Univ London Imperial Coll Sci & Technol, Dept Chem Engn, London SW7 2BY, England

来源：

CHEMICAL ENGINEERING SCIENCE | 2001年 / 56卷 / 19期

关键词：

case II; diffusion; dissolution; interface; oligomers; polymers;

D O I：

10.1016/S0009-2509(01)00171-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We present results of neutron reflectivity measurements of plasticiser diffusion into high molecular weight deuterated poly (methyl methacrylate) (dPMMA). These measurements were made in situ and in real time, enabling the interfacial profile to be studied in detail in situations where the normal 'anneal-quench' procedure is impossible. From the velocity of the diffusion front, the diffusion coefficients for two molecular weights, of oligo-methyl methacrylate (OMMA) have been determined. Oligo-poly(ethylene glycol) (PEG) diffusing into dPMMA has also been measured and limited solubility of PEG observed. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：5473 / 5483

页数：11

共 26 条

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[Anonymous], 1968, DIFFUSION POLYM

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