Citation: HE Junhui, WANG Erjian. RADICAL PHOTOPOLYMERIZATION USING ARYLIODONIUM SALT/TERTIARY AMINE COMPLEX SYSTEM AS THE PHOTOINITIATOR[J]. Chinese Journal of Polymer Science, ;1990, 8(1): 36-43. shu

RADICAL PHOTOPOLYMERIZATION USING ARYLIODONIUM SALT/TERTIARY AMINE COMPLEX SYSTEM AS THE PHOTOINITIATOR

HE Junhui ,
WANG Erjian

Received Date: 4 November 1988

The diphenyliodonium salt (DPIOC)/triethylamine (TEA) is used as photoinitiator for radical photopolymerization. It was found that a ground state CT complex formed between DPIOC as electron acceptor and TEA as electron donor, which results in extending the photosensitivity range of DPIOC/TEA system up to above 500nm compared with DPIOC alone. The kinetic studies on photopolymerization of methyl methacrylate (MMA) were carried out in CH_3CN: H2O (14: 1, v/v) mixture solution at 30℃ by dilatometer. The results obtained show that the polymerization rate(Rp)increases with increasing concentrations of SPIOC and TEA with exponent 0.65 and 0.62 respectively.The activation energy Ea and kp/k1/2t value were determined to be 4.1 Kcal·mol-1 and 0.045 respectively.The other influence factors and reaction mechanism were also discussed.
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