PULSE-RADIOLYSIS OF POLY(ETHYLENE OXIDE) IN AQUEOUS-SOLUTION .2. DECAY OF MACRORADICALS

被引：39

作者：

ULANSKI, P ^{[1
]}

ZAINUDDIN ^{[1
]}

ROSIAK, JM ^{[1
]}

机构：

[1] NATL ATOM ENERGY AGCY INDONESIA,CTR APPLICAT ISOTOPES & RADIAT,JAKARTA 12070,INDONESIA

来源：

RADIATION PHYSICS AND CHEMISTRY | 1995年 / 46卷 / 4-6期

关键词：

PULSE RADIOLYSIS; POLYMER; MACRORADICAL; RECOMBINATION; KINETICS; REACTIVITY DISTRIBUTION; POLY(ETHYLENE OXIDE); AQUEOUS SOLUTION;

D O I：

10.1016/0969-806X(95)00292-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pulse radiolysis studies on the decay of macroradicals derived from poly(ethylene oxide) in deaerated aqueous solution have shown that this process does not follow classical second-order kinetics. This is attributed to the nature of the dominating reaction, i.e. intramolecular recombination. The rate of decay depends mainly on the average initial number of radicals formed on one chain (Z(R)o) It is shown that the decay may be well described with the non-homogeneous kinetics with time-dependent rate constant in the form k = B t(alpha-1). The influence of polymer concentration, molecular weight and Z(R)o on the parameter alpha (a measure of non-homogeneity) is discussed.

引用

页码：917 / 920

页数：4

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[5] OH-RADICAL-INDUCED CROSS-LINKING AND STRAND BREAKAGE OF POLY(VINYL ALCOHOL) IN AQUEOUS-SOLUTION IN THE ABSENCE AND PRESENCE OF OXYGEN - A PULSE-RADIOLYSIS AND PRODUCT STUDY [J].

ULANSKI, P ;

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MACROMOLECULAR CHEMISTRY AND PHYSICS, 1994, 195 (04) :1443-1461

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