Direct observation of an isolated cyclic sodium poly(styrenesulfonate) molecule by atomic force microscopy

Daisuke Kawaguchi, Takashi Nishu, Atsushi Takano, Yushu Matsushita

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

A cyclic sodium poly (styrenesulfonate) (c-PSS) from cyclic polystyrene by sulfonation reaction was prepared and the closed loop structure of the isolated cyclic polyelectrolyte was observed by scanning probe microscopy (SPM). Linear polystyrene, 1-PS was prepared by a living anionic polymerization using naphthalene potassium as an initiator and weight-averaged molecular weight of 1-PS was determined by multi-angle laser light scattering (MALLS). Degrees of sulfonation of c-PSS and 1-PSS, determined by inductively coupled plasma (ICP) mass spectroscopy, were 74% and 72% respectively. The PSS molecules were observed by atomic force microscopy (CFM) with intermittent contact mode and a cantilever tip, microfabricated from silicon, was used for the observation. The result shows that the ring-shaped structure of a synthetic cyclic polymer is evidently confirmed based on the direct observation of the individual chains by AFM.

本文言語英語
ページ(範囲)271-275
ページ数5
ジャーナルPolymer Journal
39
3
DOI
出版ステータス出版済み - 5 11 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
  • 材料化学

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