Chemical and thermal characterization of high- and low-density irradiated polyethylenes

被引：10
|
作者：
de Juano-Arbona, VS [1 ]
Vallés-Lluch, A [1 ]
Contat-Rodrigo, L [1 ]
Ribes-Greus, A [1 ]
机构：
[1] Escuela Tecn Super Ingn Ind Valencia, Dept Appl Thermodynam, Valencia, Spain
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2002年 / 86卷 / 08期
关键词：
polyethylene; radiation; infrared spectroscopy; differential scanning calorimetry (DSC); mechanical properties;
D O I：
10.1002/app.11110
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A comparative study of the dynamic mechanical relaxation spectra of high- and low-density polyethylenes irradiated with gamma-radiation from a Co-60 source was performed. The irradiation doses ranged from 0 to 100 Mrad. All the samples were previously characterized by determination of the molecular weight distribution, the number of functional groups, and the crystalline fraction. All the relaxation zones between - 145degreesC and the melt were studied in the frequency range from 0.3 to 30 Hz. The changes observed in the mechanical relaxation spectra were related to modifications in the chemical structure and morphological parameters attributed to the exposure of the samples to the gamma-radiation. (C) 2002 Wiley Periodicals, Inc.
引用
收藏
页码：1953 / 1958
页数：6
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