Characterization of cyclic polystyrene with high molecular weight and its interdiffusion behavior

Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

In this paper, synthesis and characterization of cyclic polystyrenes (c-PS) including the structural feature of one of the derivatives and interdiffusion of c-PS are described. The cyclic structure of poly (styrenesulfonate), which was obtained by sulfonation of c-PS, was directly confirmed by atomic force microscopic observation. The purities of c-PS, evaluated by high performance liquid chromatography, were higher than 95%. The time-dependent interfacial thickness of a cyclic polystyrene (c-hPS)/its deuterated counterpart (c-dPS) bilayer film and that of a linear polystyrene (1-hPS)/its deuterated counterpart (1-dPS) bilayer film was investigated by dynamic secondary ion mass spectrometry (DSIMS) and neutron reflectivity (NR) measurement. The diffusion constant of c-PS is significantly larger than that of the corresponding linear one. This can be explained in terms of weaker topological constraint due to the lesser entanglement of c-PS.

本文言語英語
ページ(範囲)397-405
ページ数9
ジャーナルKOBUNSHI RONBUNSHU
64
7
DOI
出版ステータス出版済み - 7 1 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • ポリマーおよびプラスチック
  • 環境科学(全般)
  • 材料科学(その他)
  • 化学工学(その他)
  • セラミックおよび複合材料

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