メゾゲンを持たないパラあるいはメタ型ポリイミドウレタンの合成と液晶性 Synthesis and Liquid Crystallinity of Para-or Meta-Type Poly(imide-urethane)s Containing no Mesogenic Unit

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Thermotropic poly (imide-urethane) PIUnTp's and PIUnTm's (n: the number of methylene unit, 5, 6, 8, and 11; p: para-type unit; m: meta-type unit) containing no mesogenic unit were synthesized by polyaddition of N, N'-bis [2-methyl-4- (ω-hydroxyalkoxy) phenyl]- 2, 3, 6, 7-naphthalene dicarboximides (BMNDIn) with a para-type 2, 5- or a meta-type 2, 4-tolylene diisocyanate (2, 5- or 2, 4-TDI). The poly (imide-urethane) PIUnTp's and PIUnTm's showed liquid crystallinity in the cooling stage under shearing. For example, a para-type poly (imide-urethane) PIU6Tp exhibited liquid crystallinity in the temperature range from 247°C to 226°C and a meta-type poly (imide-urethane) PIU6Tm exhibited liquid crystallinity in the temperature range from 242°C to 221°C in the cooling stage. The liquid crystallinity was examined by DSC measurement, polarized optical microscope observation, and X-ray diffractometry.

収録刊行物

  • 繊維学会誌  

    繊維学会誌 54(5), 246-252, 1998-05-10 

    The Society of Fiber Science and Technology, Japan

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各種コード

  • NII論文ID(NAID)
    10002059472
  • NII書誌ID(NCID)
    AN00131651
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00379875
  • NDL 記事登録ID
    4481701
  • NDL 雑誌分類
    ZP33(科学技術--繊維工学・工業)
  • NDL 請求記号
    Z17-189
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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