Surface modification of UV-cured epoxy resins by click chemistry


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YÜKSEL DURMAZ Y., Sangermano M., Yağcı Y.

Journal of Polymer Science, Part A: Polymer Chemistry, vol.48, no.13, pp.2862-2868, 2010 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 13
  • Publication Date: 2010
  • Doi Number: 10.1002/pola.24063
  • Journal Name: Journal of Polymer Science, Part A: Polymer Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2862-2868
  • Keywords: Click chemistry, Epoxy resin, Hydrophilic polymers, Hydrophilicity, Modification, Photopolymerization, Surface modification, Uv curing
  • Istanbul Medipol University Affiliated: Yes

Abstract

A novel method for surface modification of UV-cured epoxy network was described. Photoinitiated cationic copolymerization of a bisepoxide, namely 3,4-epoxy cyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (EEC) with epibromohydrine (EBH) by using a cationic photoinitiator, [4-(2-methylpropyl) phenyl]4-methylphenyl-iodonium hexafluorophosphate, in propylene carbonate solution was studied. The real-time Fourier transform infrared spectroscopic, gel content determination and thermal characterization studies revealed that both EEC and EBH monomers take part in the polymerization and epoxy network possessing bromomethyl functional groups was obtained. The bromine functions of the cured product formed on the glass sur-face were converted to azide functionalities with sodium azide. Independently prepared alkyne functional poly(ethylene glycol) (PEG) was subsequently anchored to azide-modified epoxy surface by a "click" reaction. Surface modification of the network through incorporation of hydrophilic PEG chain was evidenced by contact angle measurements. © 2010 Wiley Periodicals, Inc.