Alterations of molecular characteristics of polyethylene under the influence of γ-radiation

被引：11

作者：

Barkhudaryan, VG ^{[1
]}

机构：

[1] Yerevan State Univ, Dept Mol Phys, Yerevan 375049, Armenia

来源：

POLYMER | 2000年 / 41卷 / 07期

关键词：

polyethylene; irradiation; crosslinking;

D O I：

10.1016/S0032-3861(99)00411-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of gamma-irradiation on the molecular mass distribution and solubility of low-density polyethylene (LDPE) in dependence of samples' thickness, irradiation intensity and dose have been investigated by the methods of turbidimetry and gelation measuring. Irradiation took place in the presence of air. It was shown that the destruction and crosslinking processes proceed simultaneously with the irradiation. The expressiveness of these processes depends on the irradiation intensity, dose and samples' thickness. Also, the decrease of gel point occurrence and difference in velocities of degradation and crosslinking of macromolecules were established along with the decrease of the samples' thickness and irradiation intensity. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2511 / 2514

页数：4

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