Influence of aging on the mechanical properties of smectic polypropylene

被引：6
|
作者：
Romano, G
Russo, R
Vittoria, V
机构：
[1] CNR, Inst Ric & Tecnol Mat Plast, Naples, Italy
[2] Univ Salerno, Dipartimento Ingn Chim & Alimentare, I-84100 Salerno, Italy
来源：
JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS | 1998年 / B37卷 / 06期
关键词：
D O I：
10.1080/00222349808212420
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Isotactic polypropylene (iPP) was quenched to the smectic state and analyzed during aging at room temperature for very long times, up to five years. Calorimetric differential scanning calorimetry (DSC) curves, dynamic mechanical behavior, and mechanical properties were used to analyze the aged samples and data were compared with the results for the fresh sample. The obtained results can be explained by a reduction of free volume of the amorphous phase, as well as a concomitant increase of the smectic domains' dimensions. A good correlation was found between some calorimetric and mechanical parameters.
引用
收藏
页码：841 / 850
页数：10
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