Synthesis and Photopolymerization Properties of Curable Benzophenone Derivative Photoinitiator

doi:10.7517/j.jssn.1674-0475.2013.02.007

Abstract

Abstract: The curable photoinitiator of 4-(acrylate-2-hydroxypropylate-3-oxy) benzophenone(AEBP) containing unsaturated double bond was synthesized by 4-(2,3-epoxypropoxy) benzophenone(EBP) and acrylic acid through ring-open reaction method. The chemical structure was characterized by FT-IR and ¹HNMR. The UV absorption wavelength of AEBP was characterized by UV-Vis spectrum. The photopolymerization kinetics of AEBP were investigated by RT-IR, extraction method was applied to compare the migration of BP with AEBP after cured. The results showed that double bond conversion increased with the increase of AEBP concentration, when EDAB concentration was 1.2%, the final double bond conversion was the optimum, the initiating efficiency of AEBP with diacrylate monomer were better than that with triacrylate monomer. The rate of polymerization increased with light intensity. After cured with monomers, the migration of AEBP reduced greatly compared with that of traditional BP.

Key words: benzophenone, photopolymerization, RT-IR, migration, curable photo-initiator

CLC Number:

ZHU Xiao-dan, LU Jian, HAN Yin-feng, WANG Ke-min. Synthesis and Photopolymerization Properties of Curable Benzophenone Derivative Photoinitiator[J]. Imaging Science and Photochemistry, 2013, 31(2): 140-149.

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