한국인쇄학회지 (Journal of the Korean Graphic Arts Communication Society)
- 제11권1호
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- Pages.17-29
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- 1993
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- 1226-1149(pISSN)
Cyanine 색소 및 그 전하이동착체의 광전효과
Photoelectric Effects of Cyanine Dye and Charge Transfer Complex
초록
As inverstigating the influence of monomers and photoinitiator in the polymerization rate of photopolymerization by using IR spectroscopy, photopolymerizations initiated by ultraviolet radiation are characterized by the presence of an autoacceleration in the polymerization rate as the reaction proceeds. The conversion for the end of the autoacceleration varies considerably depending on the monomer and reaction condition which determines coil size and viscosity. In UV curable systems, the autoacceleration begins at only a few percent conversion and continues to 40% in HEA solution and 60% conversion in EHA solution. The polymerization ate in HEA solution increased as follow; DMHA > HCPK > DMPA and could be explained by the interaction between the initiating radical and HEA monomer and the size of the photodissociated radical of initiator. But the tendency of autoacceleration in EHA solution is almost independent on initiator.
키워드