DYE-SENSITIZED PHOTOPOLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COUMARIN DYE/IODONIUM SALT SYSTEM*

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DYE-SENSITIZED PHOTOPOLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COUMARIN DYE/IODONIUM SALT SYSTEM*

Papers | Updated：2021-06-21

- DYE-SENSITIZED PHOTOPOLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COUMARIN DYE/IODONIUM SALT SYSTEM*
- Vol. 17, Issue 6, Pages: 589-594(1999)
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- Published：20 December 1999
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DYE-SENSITIZED PHOTOPOLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COUMARIN DYE/IODONIUM SALT SYSTEM*[J]. 1999, 17(6): 589-594.
DOI：

DYE-SENSITIZED PHOTOPOLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COUMARIN DYE/IODONIUM SALT SYSTEM*[J]. 1999, 17(6): 589-594. DOI：

摘要

The photosensitive initiating system composed of 7-diethylamino-3-(2'-benzimidazolyl)coumarindye (DEDC) and diphenyliodonium hexafluorophosphate (DIHP) which act as the sensitizer and the initiatorrespectively

can be used to initiate the polymerization of methyl methacrylate (MMA). The results showedthat when exposed to visible light

coumarin dye/iodonium salt undergoes quick electron transfer from DEDCto DIHP and free radicals are produced. The visible light photoinduced reaction between DEDC and DIHP is mainly through the excited singlet state of DEDC and thus it is a little sensitive to O2.The influence of concentration of DEDC

DIHP and MMA on the rate of photopolymerization of MMA was also investigated.

Abstract

can be used to initiate the polymerization of methyl methacrylate (MMA). The results showedthat when exposed to visible light

DIHP and MMA on the rate of photopolymerization of MMA was also investigated.

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