Oriented Crystallization of Polycarbonate by Vapor Grown Carbon Fiber and its Application
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- Takahashi Tatsuhiro
- Department of Polymer Science and Engineering, Yamagata University
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- Higuchi Ayumu
- Department of Polymer Science and Engineering, Yamagata University
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- Awano Hiroshi
- Department of Polymer Science and Engineering, Yamagata University
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- Yonetake Koichiro
- Department of Polymer Science and Engineering, Yamagata University
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- Kikuchi Tokio
- Material Technology Group, Fukushima Technology Center
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Abstract
It is known that polycarbonate (PC) is categorized as amorphous polymer and pure PC crystallizes extremely slowly. However, we have recently found that the crystallization of PC was substantially accelerated around 200 °C in the presence of vapor grown carbon fiber (VGCF), having ultra thick multi-walled carbon nanotube (MWCNT) structure. To examine the accelerated crystallization by VGCF, the effect of pre-graphitized VGCF, carbon black, and mesophase pitch based carbon fiber (CF) on the crystallization was evaluated. In addition, polarized optical microscope observation was performed by using PC including magnetically oriented VGCF. It was suggested that the surface of ordered graphite structure from VGCF or CF induced the oriented crystallization of PC along the axial direction of VGCF or CF. To utilize the accelerated oriented crystallization of PC by CF, PC sheet having oriented crystallized surface PC layer was made by annealing the stacked structure of PC sheet and oriented CF sheet at 200 °C. The PC sheet, whose surface was crystallized along CF axial direction, was successfully produced, showing retardation property by polarized optical microscope.
Journal
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- Polymer Journal
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Polymer Journal 37 (12), 887-893, 2005
The Society of Polymer Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001206287596160
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- NII Article ID
- 10016910327
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- NII Book ID
- AA00777013
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- ISSN
- 13490540
- 00323896
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- NDL BIB ID
- 7741034
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed