Influence of salt concentration on swelling states of poly(sulfobetaine) brush at aqueous solution interface

Yuki Terayama, Moriya Kikuchi, Motoyasu Kobayashi, Masahiro Hino, Atsushi Takahara

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

Swelling states of poly(3-dimethyl(methacryloyloxyethyl)ammonium propane sulfonate) (DMAPS) brush in aqueous solutions with different salt concentrations were investigated by atomic force microscopy (AFM) and neutron reflectivity measurement. The thickness of swollen poly(DMAPS) brush evaluated by AFM was increased from 212 nm up to 352 nm with an increase in salt concentration from 0 to 0.5 M. Poly(DMAPS) brush chains formed shrunk structure in a pure water due to the attractive electrostatic inter- and intra-chain interaction of sulfobetaine groups, while the brush chains in NaCl aqueous solution were stretched up because the hydrated salt ions screened the attractive interaction.

本文言語英語
論文番号012011
ジャーナルJournal of Physics: Conference Series
184
DOI
出版ステータス出版済み - 2009

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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