Porous thin films based on photo-cross-linked star-shaped poly(D,L-lactide)s

Afia S. Karikari, Sharlene R. Williams, Cheryl L. Heisey, Adam M. Rawlett, Timothy Edward Long*

*この研究の対応する著者

研究成果: Article査読

62 被引用数 (Scopus)

抄録

Self-assembly processes and subsequent photo-cross-linking were used to generate cross-linked, ordered microporous structures on the surfaces of well defined four-arm star-shaped poly(D,L-lactide) (PDLLA) thin films. The four-arm star-shaped PDLLAs were synthesized using an ethoxylated pentaerythritol initiator. Solutions of the PDLLAs were cast in a humid environment, and upon solvent evaporation, ordered honeycomb structures (or breath figures) were obtained. Correlations between molar mass, polymer solution viscosity, and pore dimensions were established. The average pore dimension decreased with increasing polymer solution concentration, and a linear relationship was observed between relative humidity and average pore dimensions. Highly ordered microporous structures were also developed on four-arm star-shaped methacrylate-modified PDLLA (PDLLA-UM) thin films. Subsequent photocross-linking resulted in more stable PDLLA porous films. The photo-cross-linked films were insoluble, and the honeycomb structures were retained despite solvent exposure. Free-standing, structured PDLLA-UM thin films were obtained upon drying for 24 h. Ordered microporous films based on biocompatible and biodegradable polymers, such as PDLLA, offer potential applications in biosensing and biomedical applications.

本文言語English
ページ(範囲)9687-9693
ページ数7
ジャーナルLangmuir
22
23
DOI
出版ステータスPublished - 2006 11月 7
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • コロイド化学および表面化学

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