Model linear ethylene-butene copolymers irradiated with γ-rays

被引：22

作者：

Andreucetti, N

Lagos, LF

Curzio, O

Sarmoria, C

Vallés, E

机构：

[1] Univ Nacl Sur, CONICET, Planta Piloto Ingn Quim, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[2] Univ Nacl Sur, Dept Quim & Ingn Quim, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

POLYMER | 1999年 / 40卷 / 12期

关键词：

irradiation; model; modification;

D O I：

10.1016/S0032-3861(98)00558-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two model linear polyethylenes of different molecular weights and very narrow molecular weight distributions were subject to gamma-ray irradiation under vacuum. Irradiations were conducted at two temperatures: 25 and 135 degrees C. Number average and weight average molecular weight of irradiated samples was measured by LALLS and membrane osmometry, and the distribution of molecular weights was studied by GPC. The presence of a low but measurable amount of scission was verified. A mathematical model of the irradiation process was developed, which gave very good predictions of the measured values. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：3443 / 3450

页数：8

共 12 条

[1]

ANDREUCETTI NA, 1988, RADIAT PHYS CHEM, V31, P663

[2]

*ASTM, 359380 ASTM D

[3] EFFECTS OF CHAIN MICROSTRUCTURE ON THE VISCOELASTIC PROPERTIES OF LINEAR POLYMER MELTS - POLYBUTADIENES AND HYDROGENATED POLYBUTADIENES [J].