Crystalline structure of polyethylene containing 1,2- or 1,3-disubstituted cyclopentane units in the main chain

Naofumi Naga, Michiyo Tsubooka, Masato Sone, Kohji Tashiro, Yukio Imanishi

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Polyethylene having 1,2- or 1,3-disubstituted cyclopentane structures was prepared by copolymerization of ethylene and cyclopentene (CPE) or 1,5-hexadiene (HD), and the crystalline structure was studied. Treatment with fuming nitric acid preferentially degraded the amorphous phase of the copolymers, and the structure of degraded samples indicated that 1,3-disubstituted cyclopentane units were taken in the crystalline phase of poly(ethylene-co-HD). Infrared spectra of the copolymers indicated the increase of hexagonal-phase character in poly(ethylene-co-HD) with increasing content of 1,3-disubstituted cyclopentane units. Wide-angle X-ray diffraction patterns of poly(ethylene-co-HD) showed a continuous transition from the orthorhombic phase to the hexagonal phase in the copolymer with HD content less than 15 mol %. On the other hand, 1,2-disubstituted cyclopentane structures were not taken in the crystalline phase, but in the amorphous phase.

本文言語English
ページ(範囲)9999-10003
ページ数5
ジャーナルMacromolecules
35
27
DOI
出版ステータスPublished - 2002 12月 31
外部発表はい

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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