Surface Forces between Monolayers of Anchored Poly(methacrylic acid)

Kazue Kurihara, Toyoki Kunitake, Nobuyuki Higashi, Masazo Niwa

研究成果: Contribution to journalArticle査読

52 被引用数 (Scopus)

抄録

The surface forces measurement was employed to study interactions between monolayers of an anionic polyelectrolyte using chain-end-anchored poly(methacrylic acid). The polyelectrolyte layers were prepared by depositing monolayers of the poly(methacrylic acid) amphiphile onto mica. The force was repulsive and was altered by ionization and structural changes of the polyelectrolyte layers at different pH values and NaBr concentrations. The majority of negative charges was insulated by counterions, resulting in saturation of repulsion at shorter distances. The thickness of the polyelectrolyte layer was determined from the force measurement. When the carboxylic acid group was ionized by more than 10%, the polyelectrolyte chain was extended to a length about 6 times greater than that of its hypercoiled form.

本文言語英語
ページ(範囲)2087-2089
ページ数3
ジャーナルLangmuir
8
9
DOI
出版ステータス出版済み - 9 1 1992
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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