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Structure and Properties of Aliphatic Poly(carbonate) glycols with Different Methylene Unit Length
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- Masubuchi Tetsuo
- Department of Materials Science, Graduate School of Science and Technology, Nagasaki University Asahi Kasei Chemicals Corporation
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- Sakai Machiko
- Department of Materials Science, Graduate School of Science and Technology, Nagasaki University
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- Kojio Ken
- Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University
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- Furukawa Mutsuhisa
- Department of Materials Science, Graduate School of Science and Technology, Nagasaki University
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- Aoyagi Takeshi
- Asahi Kasei Corporation
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Description
Aliphatic poly(carbonate) glycols (PC-glycols) with different methylene unit lengths were synthesized from ethylene carbonate and 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonanediol or 1,10-decanediol. The samples were coded 3002, 4002, 5002, 6002, 7002, 8002, 9002 and 10002 respectively, for each of these PC-glycols. Wide-angle X-ray diffraction (WAXD) and Differential Scanning Calorimetry (DSC) measurements were carried out to examine the structure of PC-glycols. A WAXD profile of 3002 showed only an amorphous halo with no particular crystalline peaks. Also, a DSC thermogram of 3002 showed the glass transition point but no melting peaks were observed. In the case of 5002, relatively weak WAXD peaks were observed, but no melting peaks were observed in the DSC thermogram. On the other hand, the other PC-glycols exhibited crystalline peaks in WAXD profiles and a melting peak in DSC thermograms. These results indicated that PC-glycols with odd numbered methylene unit length were more amorphous than those with even numbered methylene unit length.
Journal
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- e-Journal of Soft Materials
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e-Journal of Soft Materials 3 55-63, 2007
THE SOCIETY OF RUBBER SCIENCE AND TECHNOLOGY, JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390282680205428736
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- NII Article ID
- 130004456653
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- ISSN
- 13497308
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed
