Alicyclic Polyimides Derived from Alkanone Bis-spironorbornanetetracarboxylic Dianhydrides
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- Matsumoto Toshihiko
- Department of Life Science and Sustainable Chemistry, Faculty of Engineering, Tokyo Polytechnic University,
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- Ishiguro Eriko
- Department of Life Science and Sustainable Chemistry, Faculty of Engineering, Tokyo Polytechnic University,
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- Nakagawa Soya
- Department of Life Science and Sustainable Chemistry, Faculty of Engineering, Tokyo Polytechnic University,
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- Kimura Ryosuke
- Department of Life Science and Sustainable Chemistry, Faculty of Engineering, Tokyo Polytechnic University,
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Alicyclic tetracarboxylic dianhydrides having alkanone bis-spironorbornane structure were synthesized and polycondensated with aromatic diamines. The polyimide films were prepared by a thermal and a chemical imidization methods. Poly(amic acid)s possessed an inherent viscosity (ηinh) range of 1.1-0.5 dL/g and gave flexible films after cured at 300-350 °C under vacuum. All the polyimides possessed the 5 %-wt loss temperatures in nitrogen in the range of 470-490 °C, and the glass transition temperatures over 290 °C. The high Tg may be due to a dipole-dipole interaction between the keto groups of the polymer chains as well as a development of rigid polyalicyclic units. The films had a coefficient of thermal expansion (CTE) range of 50-60 ppm/K. The polyimide films exhibited cutoffs at wavelengths shorter than 290 nm. Transparency in the visible region of each polyimide film was over 85%. The polymerization degree of PI(ChODA+3,4’-DDE) obtained by curing the reprecipitated poly(amic acid) at 300 °C for 1 h in vacuum was 17, whereas the value increased six times higher on heating at 350 °C for an additional 30 min. The result means that the post-polymerization took place over the Tg (335 °C).
収録刊行物
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- Journal of Photopolymer Science and Technology
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Journal of Photopolymer Science and Technology 26 (3), 361-365, 2013
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詳細情報 詳細情報について
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- CRID
- 1390282679302211712
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- NII論文ID
- 130004721122
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- NII書誌ID
- AA11576862
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- COI
- 1:CAS:528:DC%2BC3sXhtFCmtLzM
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- ISSN
- 13496336
- 09149244
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- NDL書誌ID
- 024660748
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可