Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Study on the Optimization of Cationic Ring Opening Polymerization of Silicone-Based Epoxy Monomers for Holographic Photopolymers

  • Kim, Dae-Heum (Chemical Engineering Department, Kwangwoon University) ;
  • Chung, Dae-Won (Department of Polymer Engineering, University of Suwon)
  • Published : 2009.09.25
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Abstract

This study examined the optimum compositions of binder, photo-acid generator (PAG) and sensitizer for the cationic ring opening polymerization of 1,3-bis[2-(3-{7-oxabicyclo-[4.1.0]heptyl})]-tetramethyldisiloxane in the presence of polydimethylsiloxane with four epoxide moieties as a co-monomer. When diffractive efficiency (DE) values were compared quantitatively to analyze the effect of the binder on holographic photopolymerization, DE was affected by the viscosity of the binders and miscibility with the monomer mixture. Extremely low DE values were observed when the immiscible dimethyl silicone was used as a binder. Therefore, methylphenyl silicone, which is miscible with the monomer mixture, was used as the binder for further studies. The optimal conditions were a binder viscosity between 250 to 390 cP, and contents of the binder, PAG, and sensitizer were 75-125 wt%, > 6 wt% and 0.05 wt% to the total monomer mixture, respectively.

Keywords

References

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