SEM OBSERVATION OF THE CRAZING FOR POLYPHENYLQUINOXALINE FILMS DURING IN SITU STRETCHING* |
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| Authors: | Wan-jun Liu Jing-shu Shen Feng-cai Lu Mao Xu |
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| Institution: | Polymer Physics Laboratory; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100080; China |
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| Abstract: | The crazing of polyphenylquinoxaline (PPQ-E) films during in situ stretching has been observedby SEM. The crazing phenomena and craze morphology of PPQ-E films were interpreted. The strain values atcritical crazing and yielding and the craze stability of PPQ-E samples depend on the thermal-dealingcondition for the samples. From the point of view of cohesional entanglements and energy absorbed bysamples, the experiment results were explained. |
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| Keywords: | PPQ-E Crazing Physical aging Cohesional entanglement in-situ stretching SEM |
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