Adsorption behavior of polystyrene-polyisoprene diblock copolymers with zwitterionic groups using quartz crystal microbalance: Effect of different microstructures

Mi Kyoung Park, Ji Ho Youk, Stergios Pispas, Nikos Hadjichristidis, Rigoberto Advincula*

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The adsorption behavior of poly(styrene-b-isoprene) (PS-b-PI) copolymers functionalized with polar sulfobetaine zwitterionic groups at different positions along the backbone was investigated. Using dilute solutions in toluene, adsorption onto gold surface was investigated using a quartz crystal microbalance (QCM). ZwIS and ZwSI, ZwISZw, and SZwI are PS-b-PI copolymers functionalized at the α-position (zwitterionic group is attached to isoprene or styrene), at the α, ω-positions, and at the junction-point in the chain, respectively. The copolymers showed interesting adsorption behavior according to the zwitterion position. The adsorption isotherms for the copolymers exhibited typical Langmuir isotherm behavior. They showed different adsorbing amounts, which was explained by possible conformational states of copolymers on the surface. It was found that the position of zwitterionic groups has a major role on adsorption kinetics despite similar molecular weight and composition for the copolymers.

本文言語English
ページ(範囲)8040-8044
ページ数5
ジャーナルLangmuir
18
21
DOI
出版ステータスPublished - 2002 10 15
外部発表はい

ASJC Scopus subject areas

  • 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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