Anisotropic swelling behavior of copolymeric gel film with crystalline oriented side chains

Xiaowei He, Atsushi Takahara, Tisato Kajiyama

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A copolymeric gel film with swelling anisotropy was prepared on a flat Petri dish by free-radical copolymerization of stearyl acrylate (SA) and acrylic acid (AA) with N,N′-methylenebisacrylamide (MBAA) as the crosslinking agent. An X-ray diffraction study of the gel film revealed that the SA side chains in the gel film SA/AA/MBAA:24.7/74.3/1.0 (in mol) were spontaneously oriented perpendicular to the film surface in order to minimize the interfacial free energy between the gel film surface and air. The one-dimensional swelling ratio perpendicular to the gel film surface in an ethanol/water mixture was greater than that in the direction parallel to the film surface. This swelling anisotropy can be explained on the basis of changes in the state of anisotropic aggregation.

本文言語英語
ページ(範囲)429-438
ページ数10
ジャーナルPolymer Gels and Networks
5
5
DOI
出版ステータス出版済み - 1 1 1997

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 薬科学
  • ポリマーおよびプラスチック

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