Degradative Behavior of Poly (hexamethyleneazobiscyanopentanamide) and Its Application to Block Copolymerization

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  • アゾビスシアノペンタン酸を利用したブロック共重合体に関する研究　Ｉ　　ポリ（ヘキサメチレンアゾシアノペンタン酸アミド）の分解挙動とそれを利用したブロック共重合
  • ポリ ヘキサメチレンアゾビスシアノペンタンサン アミド ノ ブンカイ キョドウ

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Abstract

Poly (hexamethyleneazobiscyanopentanamide) was synthesized by the interfacial polycondensation of azobiscyanopentanoyl chloride and hexamethylenediamine at room temperature. Similarly, copolyamide (I) consisting of the segments of the above polyamide (II) and nylon 6·10 was also synthesized. The azo group in the main chain of II and I was decomposed as easily as it was in ordinary azo-initiators (e. g., AIBN) both in solid state and in solution. When the thermally unstable II (or I) dissolved in DMF or m-cresol was heated in the presence of a vinyl monomer such as styrene (III), a block copolymer consisting of poly-III and degradable II (III-II) was obtained and its molecular weight increases remarkably with time in the early stage of polymerization. It was considered that the anomalous increase in molecular weight was due to the successive scission of azo group in the polymer chain followed by the growing reaction of III. Furthermore, a second vinyl monomer such as methyl methacrylate (IV) could be polymerized with III-II used as an initiator, yielding a block terpolymer (III-II-IV).

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 33 (3), 131-140, 1976

    The Society of Polymer Science, Japan

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