Synthesis and Characterization of New Highly Soluble Polyamides Derived from α, α'-Bis[3, 5-dimethyl-4-(4-aminophenoxy)phenyl]-1, 4-Diisopropylbenzene

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The five benzene rings-containing diamine, α,α'-bis[3,5-dimethyl-4-(4-aminophenoxy)phenyl]-1,4-diisopropylbenzene (BDAPD) was prepared by the aromatic nucleophilic substitution of α,α'-bis(4-hydroxy-3,5-dimethylphenyl)-1,4-diisopropylbenzene with 1-chloro-4-nitrobenzene, and subsequent hydrogenation of the intermediate dinitro compound. The diamine was reacted with various aromatic dicarboxylic acids to prepare a series of new polyamides. The polyamides were produced with high yield and inherent viscosities of 0.68–0.94 dL g<FONT SIZE="-1"><SUP>-1</SUP></FONT>. The wide-angle X-Ray diffraction diagrams revealed that all the polyamides showed amorphous character. All of the polyamides showed excellent solubility in a variety of solvents such as <I>N</I>-methyl-2-pyrrolidinone, <I>N</I>,<I>N</I>-dimethylacetamide, <I>N</I>,<I>N</I>-dimethylformade, dimethyl sulfoxide, pyridine, cyclohexanone, and tetrahydrofuran. These five benzene rings-containing polyamides had better solubility than those containing only one isopropylidene unit or a hexafluoroisopropylidene linkage in the repeating unit of polyamide backbone. These polyamides had glass transition temperatures (<I>T<FONT SIZE="-1"><SUB>g</SUB></FONT></I>'s) between 237–256<FONT SIZE="-1"><SUP>°</SUP></FONT>C. The thermogravimetric analyses demonstrated that almost all of the polymers were stable up to 400<FONT SIZE="-1"><SUP>°</SUP></FONT>C, and the 10% weight loss temperatures were recorded in the range 437–452<FONT SIZE="-1"><SUP>°</SUP></FONT>C and 447–463<FONT SIZE="-1"><SUP>°</SUP></FONT>C in nitrogen and air atmosphere, respectively.

収録刊行物

  • Polymer journal

    Polymer journal 34(5), 307-312, 2002-05-15

    社団法人 高分子学会

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各種コード

  • NII論文ID(NAID)
    10012290854
  • NII書誌ID(NCID)
    AA00777013
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00323896
  • NDL 記事登録ID
    6178980
  • NDL 雑誌分類
    ZP16(科学技術--化学・化学工業--高分子化学・高分子化学工業)
  • NDL 請求記号
    Z53-R487
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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