Temperature dependence of electrophoretic mobility and hydrodynamic radius of microgels of poly(N-isopropylacrylamide)

Yasuyuki Maki, Kentaro Sugawara, Daisuke Nagai

研究成果: ジャーナルへの寄稿学術誌査読

8 被引用数 (Scopus)

抄録

Electrostatic interactions in charged microgels, which are dominated by the microgel net charge, play a crucial role in colloidal stabilization and loading of small, charged molecules. In this study, the temperature dependences of electrophoretic mobility µ and hydrodynamic radius Rh were measured for a slightly ionized poly(N-isopropylacrylamide) (PNIPA) microgel in a dilute suspension. A decrease in Rh was observed in the temperature range between 30 C and 35 C, corresponding to the lower critical solution temperature of PNIPA, and an increase in |µ| was observed in a higher temperature range between 34 C and 37 C. The analysis based on electrophoresis theory for spherical polyelectrolytes indicated that the net charge of the microgel decreased as the microgel was deswollen.

本文言語英語
論文番号37
ジャーナルGels
4
2
DOI
出版ステータス出版済み - 6月 2018

!!!All Science Journal Classification (ASJC) codes

  • バイオエンジニアリング
  • 生体材料
  • 有機化学
  • ポリマーおよびプラスチック

フィンガープリント

「Temperature dependence of electrophoretic mobility and hydrodynamic radius of microgels of poly(N-isopropylacrylamide)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル