The gel that memorizes phases

Masahiko Annaka, Masayuki Tokita, Toyoichi Tanaka, Shimei Tanaka, Takayuki Nakahira

研究成果: ジャーナルへの寄稿学術誌査読

28 被引用数 (Scopus)

抄録

A poly(4-acrylamidosalicylic acid) gel exhibits multiple phases as characterized by distinct degrees of swelling; the gel can take one of four different swelling values, but none of the intermediate values. The multiple phase behavior appears as a result of the combination of hydrogen bonding and hydrophobic interaction between polymer segments. The gel has remarkable memory: The phase behavior of the gel depends on whether the gel has experienced the most swollen phase or the most collapsed phase in the immediate past. The information is stored and reversibly erased in the form of a macroscopic phase transition behavior. These phenomena are explained by a mean field theory where the number of hydrogen bonds is added to the equation of the state of a gel.

本文言語英語
ページ(範囲)471-477
ページ数7
ジャーナルJournal of Chemical Physics
112
1
DOI
出版ステータス出版済み - 1月 1 2000
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学一般
  • 物理化学および理論化学

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