THERMAL DEGRADATION BEHAVIORS OF NYLON 4, MODIFIED NYLON 4, AND A COPOLYMER CONTAINING NYLON 4

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  • Konomi Tuyoshi
    Department of Clothing, Faculty of Home Economics, Japan Women's University
  • Mukasa Kaori
    Department of Clothing, Faculty of Home Economics, Japan Women's University
  • Ito Kumiko
    Department of Home Economics, Tokiwa Gakuen Junior College

Bibliographic Information

Other Title
  • ナイロン4,改質ナイロン4,およびナイロン4共重合体の熱分解挙動

Abstract

Thermal degradation behaviors of nylon 4 homopolymer, a polymer which the chain end of nylon 4 was modified with diamine, and a copolymer containing nylon 4 were investigated by thermal gravimetric analysis at various heating rates. The copolymer (content of nylon 4, 23.5 mole-%) was prepared by anionic copolymerization of α-pyrrolidone and ε-caprolactam.<br>Nylon 4 became more decomposable with a process of degradation reaction. The activation energy of thermal degradation of the polymer was 28-31 kcal/mole, which was smaller than that of nylon 6. The activation energy in the initial stage of degradation depends on the temperature at which degradation of the polymers starts.<br>Thermal stability of the nylon 4 which chain end was modified with bis (p-aminocyclohexyl)-methane increased with rising the temperature of treatment, but its molecular weight remarkably decreased.<br>Thermal stability of the copolymer was considerably superior to that of nylon 4, and in contrast with nylon 4 the copolymer became more non-decomposable with a process of degradation reaction. The degradation reaction proceeded even over the range of nylon 4 contained in the copolymer, indicating occurrence of the degradation reaction of nylon 6 in the main chain of the copolymer.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 41 (8), T315-T322, 1985

    The Society of Fiber Science and Technology, Japan

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