Influence of tensile deformation on the crystalline organization of ethylene copolymers
作者:
S. Bistac,
J. Schultz,
期刊:
Journal of Macromolecular Science, Part B
(Taylor Available online 1999)
卷期:
Volume 38,
issue 5-6
页码: 663-668
ISSN:0022-2348
年代: 1999
DOI:10.1080/00222349908248129
出版商: Taylor & Francis Group
关键词: Crystallinity;Ethylene copolymers;Glass transition temperature;Tensile deformation.
数据来源: Taylor
摘要:
The influence of tensile deformation on the crystalline properties of ethylene copolymers (ethylene-vinyl acetate [EVA] copolymers) was investigated by differential scanning calorimetry (DSC). The consequence of drawing on the mobility of the amorphous phase also was investigated through the study of the glass transition temperature. The results indicate that more disorganized crystals, melting at a lower temperature, are present after the tensile deformation, reducing the mobility of the amorphous chains, as shown by an increase of the glass transition temperature. For the lowest molecular weight copolymer. less crystalline changes are observed after the tensile test, probably due to the fact that no stiffening appears during the drawing.
点击下载:
PDF (284KB)
返 回