Cobalt(II) chloride catalysed oxidative degradation of poly(ethylene oxide) by a short wavelength UV-radiation

被引：25

作者：

Kaminska, A ^{[1
]}

Kaczmarek, H ^{[1
]}

Kowalonek, J ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Fac Chem, PL-87100 Torun, Poland

来源：

POLYMER | 1999年 / 40卷 / 21期

关键词：

photo-oxidative degradation; poly(ethylene oxide); cobalt(II) chloride;

D O I：

10.1016/S0032-3861(98)00818-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Photo-oxidative degradation of poly(ethylene oxide) with small amount (1 and 3 wt.%) of cobalt (II) chloride was studied in acetonitrile solutions and in solid state. On the basis of FTIR, UV-Vis spectroscopy, GPC and viscometry measurements it was found that cobalt salt accelerates photodecomposition of PEG. DSC was applied for study of crystallinity changes in PEO and PEO + CoCl2 during UV-irradiation. The structure of PEO + CoCl2, mechanism of photoreactions and the influence of physical factors are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：5781 / 5791

页数：11

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