RADIATION-INDUCED CROSS-LINKING OF POLYETHYLENE IN THE PRESENCE OF ACETYLENE - A GEL FRACTION, UV-VISIBLE, AND ESR SPECTROSCOPY STUDY

被引：24

作者：

JONES, RA ^{[1
]}

SALMON, GA ^{[1
]}

WARD, IM ^{[1
]}

机构：

[1] UNIV LEEDS,COOKRIDGE RADIAT RES CTR,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1993年 / 31卷 / 07期

关键词：

POLYETHYLENE; POLYENE FORMATION ON IRRADIATION WITH ACETYLENE PRESENT IN; POLYENE FORMATION IN IRRADIATION OF POLYETHYLENE WITH ACETYLENE PRESENT; CROSS-LINKING IN POLYETHYLENE IRRADIATED WITH ACETYLENE PRESENT;

D O I：

10.1002/polb.1993.090310709

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Electron-spin resonance (ESR) and ultraviolet (UV) visible spectroscopic evidence has been found for the formation of diene, triene and tetraene, following the irradiation of polyethylene in the presence of acetylene. The polyenes are formed by a mechanism which is different from that observed under vacuum or with inert gas saturation. The sum of the G(polyene) values obtained by UV spectroscopy is almost half that of initial radical formation. It is concluded that polyene bridges, predominantly diene, form crosslinks between radical pairs. G(X) values determined from gel fraction data, using Saito-Kang-Dole theory, are found to be greatly in error and misrepresentative of crosslink changes.

引用

页码：807 / 819

页数：13

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