In situ photo-cross-linking of cinnamate functionalized poly(methyl methacrylate-co-2-hydroxyethyl acrylate) fibers during electrospinning

Pankaj Gupta, Scott R. Trenor, Timothy Edward Long, Garth L. Wilkes*

*この研究の対応する著者

研究成果: Article査読

146 被引用数 (Scopus)

抄録

A novel methodology for in situ cross-linking of polymeric fibers during electrospinning is described. The electrospinning apparatus was modified to facilitate UV irradiation of the electrospun fibers while in flight to the collector target. Three polymers with different mol % of the photoreactive cinnamate functional group (4, 9, and 13 mol %) were synthesized and utilized for this study. Fibers of cinnamate functionalized poly(methyl methacrylate-co-2-hydroxyethyl acrylate) were cross-linked in situ by UV irradiation during electrospinning. Subsequent FTIR measurements on irradiated and nonirradiated electrospun fibers indicated both [2π + 2π] cycloaddition of the vinylene C=C and trans-cis photoisomerization of the cinnamate group. Furthermore, the irradiated copolymers were observed to form insoluble gels which indicated that the photodimerization was the primary photoprocess during UV irradiation, leading to the formation of a cross-linked network. As expected, it was found that the gel fraction increased with increasing mol % of the cinnamate species.

本文言語English
ページ(範囲)9211-9218
ページ数8
ジャーナルMacromolecules
37
24
DOI
出版ステータスPublished - 2004 11月 30
外部発表はい

ASJC Scopus subject areas

  • 材料化学

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