An amphipathic thioxanthone-anthracene photoinitiator for free-radical polymerization

Authors

DENİZ TUNÇ BEYAZIT
BURÇİN GACAL
YUSUF YAĞCI

DOI

10.3906/kim-1301-24

Abstract

A novel thioxanthone-anthracene (TX-A) photoinitiator possessing an octyl group, TX-A-Oct, as amphipathic photoinitiator was synthesized by click chemistry. Its ability to initiate photopolymerization of various monomers, namely methyl methacrylate (MMA), acryl amide (Am), butyl acrylate (BA), styrene (St), and a multifunctional monomer trimethylolpropane triacrylate (TMPTA), was examined in both the presence and absence of air. TX-A-Oct was found to be effective in initiating polymerization also in the absence of a co-initiator. UV, FTIR, and fluorescence spectroscopic analysis and polymerization studies revealed that depending on the conditions photoinitiations occur through both anthracene and thioxanthone chromophoric groups by hydrogen abstraction and endoperoxide formation processes, respectively.

Keywords

Photopolymerization, free radical polymerization, photoinitiator, click chemistry, thioxanthone-anthracene

First Page

525

Last Page

537

Recommended Citation

BEYAZIT, DENİZ TUNÇ; GACAL, BURÇİN; and YAĞCI, YUSUF (2013) "An amphipathic thioxanthone-anthracene photoinitiator for free-radical polymerization," Turkish Journal of Chemistry: Vol. 37: No. 4, Article 5. https://doi.org/10.3906/kim-1301-24
Available at: https://journals.tubitak.gov.tr/chem/vol37/iss4/5