Oxygen diffusion in poly(methyl methacrylate) at low temperatures

被引：0

作者：

Korolev, VV ^{[1
]}

Mamaev, AL ^{[1
]}

Bol'shakov, BV ^{[1
]}

Bazhin, NM ^{[1
]}

机构：

[1] Novosibirsk Chem Kinet & Combust Inst, Novosibirsk 630090, Russia

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1998年 / 36卷 / 01期

关键词：

geminate pair; luminescence quenching; diffusion coefficient;

D O I：

10.1002/(SICI)1099-0488(19980115)36:1<127::AID-POLB14>3.3.CO;2-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oxygen diffusion in atactic poly(methyl methacrylate) has been studied by anthracene luminescence quenching in geminate pairs anthracene-oxygen at 77-130 K. Analysis of the experimental data shows that the luminescence quenching is well accounted for by a polychromatic model assuming a log-normal diffusion coefficients distribution due to inhomogeneity of polymer structure. Energy activation is equal to 30 +/- 1 KJ/mol. All diffusion coefficients data in the range 77-300 K demonstrate a good linear Arrhenius law. (C) 1998 John Wiley & Sons, Inc.

引用

页码：127 / 131

页数：5

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