Synthesis of Polyimides Bearing Quaternary Ammonium Salt Groups and Their Application for Humidity Sensor
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- Zhang Hao
- Graduate School of Science and Engineering, Yamaguchi University
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- Okamoto Kenichi
- Graduate School of Science and Engineering, Yamaguchi University
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- Ueda Masahiro
- Kobe Research & Development Center, Shinyei Kaisha
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- Nakamura Kazumasa
- Kobe Research & Development Center, Shinyei Kaisha
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Polyimides were prepared from 4,4'-(hexafluoropropylidene)-diphthalic anhydride (6FDA), N,N-bis(3-aminopropyl)-methylamine (BAPMA) and 4,4'-dimamino-diphenyl ether (ODA) by one-pot method. The tertiary amine of BAPMA moiety was reacted with large excess of ethyl bromide at 70 °C for 10 h completely to convert to the quaternary ammonium salt. Surface-resistance-type humidity sensors were prepared by dip-coating solutions of polyimides bearing quaternary ammonium salt groups onto comb-shaped gold electrodes on ceramic substrates. The humidity sensor based on NTDA-BAPMA/ODA(2/1) in quaternary ammonium salt form displayed reasonably high sensitivity to relative humidity and a small hysterisis between humidification and dehumidification runs.
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 20 (2), 153-156, 2007
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詳細情報 詳細情報について
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- CRID
- 1390001204324080896
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- NII論文ID
- 130004464517
- 40015602467
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- NII書誌ID
- AA11576862
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- COI
- 1:CAS:528:DC%2BD2sXot1Wnt7Y%3D
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- ISSN
- 13496336
- 09149244
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- NDL書誌ID
- 8918756
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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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- 抄録ライセンスフラグ
- 使用不可