Uniaxial Elongational Viscosity of PC/ A Small Amount of PTFE Blend
スポンサーリンク
概要
- 論文の詳細を見る
The uniaxial elongational viscosity of blends, consisting of polycarbonate (PC) and a small amount of polytetrafluoroethylene (PTFE), have been studied. Uniaxial elongational viscosity of blends showed stronger strain-hardening property than that of PC. The structural observations at the fractured cross-section with SEM showed that PTFE fibrils less than 100 nm in diameter were produced by kneading in molten PC, which were dispersed uniformly in PC matrix. To get deeper insight into the mechanism of the strong strain-hardening, the recoverable strain of the blend samples was investigated, and it was found a large strain recovery occurred after uniaxial elongational deformation. The comparison of the phase morphology before and after strain recovery was performed by observing with SEM. It was confirmed that the diameter of PTFE fibrils increased after strain recovery. WAXD pattern showed that the crystallites of PTFE in PTFE fibrils orientated along the elongational direction by the uniaxial elongational deformation. DSC measurement revealed that 60% amorphous phase existed in fibrillated PTFE. It was supposed that PTFE fibrils deformed, resulting in the generation of a restoring force, during elongational deformation. These results suggested that the strain-hardening property should be attributed to the generation of the restoring force by stretching of PTFE fibrils.
著者
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Taniguchi Takashi
Department of Geophysics, Faculty of Science, Hokkaido University
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KOYAMA Kiyohito
Department of Polymer Science and Engineering, Yamagata University
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Takahashi Tatsuhiro
Department of Polymer Science and Engineering, Yamagata University
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Koyama Kiyohito
Department Of Polymer Materials Engineering
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Sugimoto Masataka
Dept. Of Polymer Science And Engineering Yamagata University
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Sugimoto Masataka
Department Of Mechanism Of Aging National Institute For Longevity Sciences National Center For Geria
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Sugimoto Masataka
Department Of Materials Science And Engineering Yamagata University
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Taniguchi Takashi
Dept. Of Polymer Science And Engineering Yamagata University:jst Crest
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Takahashi Tatsuhiro
Department Of Material Science And Engineering Faculty Of Engineering Yamagata University
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Kurose Takashi
Venture Business Laboratory, Yamagata University
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Taniguchi Takashi
Department Of Geophysics Faculty Of Science Hokkaido University
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Koyama Kiyohito
Department Of Materials Science And Engineering Yamagata University
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Koyama Kiyohito
Department Of Material Science And Engineering Faculty Of Engineering Yamagata University
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Kurose Takashi
Venture Business Laboratory Yamagata University
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