MORPHOLOGICAL EVOLUTION DURING TENSILE DEFORMATION OF THE ORIENTED POLYETHYLENE AND POLYPROPYLENE
The mechanical performance of polymers is one of the most important aspects for their application. Although a wealth of work has been done investigating the deformation mechanism of polymers, there are still some details under discussion, e.g. the factors controlled the slow crack growth (SCG) speed in polyethylene pipes 1, 2 and the plastic deformation process of semi-crystalline polymers 3,4. To certain extend, the mechanical performance is affected by the morphology in samples. In this work, we performed synchrotron small angle Xray scattering (SAXS) experiments during the tensile deformation of oriented polyethylene and polypropylene. In the case of oriented polyethylene, we aimed to simulate the fibrils in the crazes based on the knowledge that near a crack tip there is always a craze structure consisting of highly stretched fibrils connecting the crack surfaces.
Yujing Tang Zhiyong Jiang Yongfeng Men
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Renmin Street 5625,130022 Changchun,PR China
国际会议
International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)
厦门
英文
95-96
2008-06-08（万方平台首次上网日期，不代表论文的发表时间）