ISOTACTIC POLYPROPYLENE EPDM BLENDS - EFFECT OF TESTING TEMPERATURE AND RUBBER CONTENT ON FRACTURE

被引:37
作者
COPPOLA, F
GRECO, R
RAGOSTA, G
机构
[1] Inst of Research on Polymer, Technology & Rheology, Naples,, Italy, Inst of Research on Polymer Technology & Rheology, Naples, Italy
关键词
COPOLYMERS - Blending - FRACTURE MECHANICS - Mathematical Models - MATERIALS TESTING - Impact - THERMOPLASTICS - Mechanical Properties;
D O I
10.1007/BF01114739
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In recent years there has been a considerable increase in the use of linear elastic fracture mechanics (LEFM) for studying the impact behavior of thermoplastics, particularly in the case of glassy polymers. In the present paper, a study of the impact fracture behavior of two isotactic polypropylene (PP), having different molar mass and their blends containing as impact modifier an ethylene-propylene-diene terpolymer (EPDM), has been performed using the concepts of LEFM. Tentative interpretations of the results also on a molecular and structural basis have been given. A critical discussion of the elaboration of the semiductile fracture data proposed in the literature has also been provided.
引用
收藏
页码:1775 / 1785
页数:11
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