Photodimerization of coumarin functionalized poly(alkyl acrylate) and poly(alkyl methacrylate) random copolymers: Influence of copolymer composition on photocrosslinking

Rebecca H. Huyck, Scott R. Trenor, Brian J. Love, Timothy Edward Long*

*この研究の対応する著者

研究成果: Article査読

20 被引用数 (Scopus)

抄録

Coumarin-containing poly(alkyl (meth)acrylates) were prepared via 70-80% esterification of hydroxy-containing acrylic copolymers, then solution cast into thin films and photocrosslinked via the dimerization of coumarin derivatives with UVA light. The coumarin-modified polymers crosslinked upon exposure and exhibited gel fractions between 74 and 99%. Coumarin dimerization efficiency increased with higher polymer mobility at the irradiation temperature. The effects of light intensity and irradiation time in photo-dimerized systems followed the Bunsen-Roscoe reciprocity law indicating that coumarin photodimerization depended only on dose. Thus, low intensities are overcome with longer times. This is an important advantage over photoinitiated free radical crosslinking which depends on irradiation intensity to the power.

本文言語English
ページ(範囲)9-15
ページ数7
ジャーナルJournal of Macromolecular Science, Part A: Pure and Applied Chemistry
45
1
DOI
出版ステータスPublished - 2008 1月 1
外部発表はい

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • 材料化学

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