A novel thermosensitive polymer, poly(methyl 2-propionamidoacrylate), with geminal substituents

Hirokazu Okamura, Takeshi Mori, Keiji Minagawa, Seizo Masuda, Masami Tanaka

研究成果: Contribution to journalArticle査読

26 被引用数 (Scopus)

抄録

A novel thermosensitive polymer, poly(methyl 2- propionamidoacrylate) (PMPA), was prepared and the phase transition behavior in an aqueous solution was studied. PMPA have geminal substituents of propionamide and methoxy carbonyl in each monomer unit. It was found that PMPA shows the lower critical solution temperature (LCST) at 50.6°C sharply. The LCST of PMPA was almost independent of the polymer concentration above 40 g/l, while, below 40 g/l, it decreased with the increasing polymer concentration. The effect of salt addition (NaCl, NaBr, and Na2SO4) on the LCST was also studied. The LCST of PMPA linearly decreased with the increasing concentration of each salt. The salting-out effect of these salts was in line with the Hofmeister series: Na2SO4 > NaCl > NaBr.

本文言語英語
ページ(範囲)3825-3828
ページ数4
ジャーナルpolymer
43
13
DOI
出版ステータス出版済み - 4 26 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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