STUDY OF PHOTOSENSITIZED INITIATION SYSTEMS CONTAINING OXYGEN Ⅴ. THE EFFECT OF MERCAPTAN ADDITIVES
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STUDY OF PHOTOSENSITIZED INITIATION SYSTEMS CONTAINING OXYGEN Ⅴ. THE EFFECT OF MERCAPTAN ADDITIVES
Vol. 4, Issue 3, Pages: 214-219(1986)
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Published:20 September 1986
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WANG Erjian, LI Miaozhen, CHANG Zhiying, et al. STUDY OF PHOTOSENSITIZED INITIATION SYSTEMS CONTAINING OXYGEN Ⅴ. THE EFFECT OF MERCAPTAN ADDITIVES[J]. 1986, 4(3): 214-219.
DOI:
WANG Erjian, LI Miaozhen, CHANG Zhiying, et al. STUDY OF PHOTOSENSITIZED INITIATION SYSTEMS CONTAINING OXYGEN Ⅴ. THE EFFECT OF MERCAPTAN ADDITIVES[J]. 1986, 4(3): 214-219.DOI:
STUDY OF PHOTOSENSITIZED INITIATION SYSTEMS CONTAINING OXYGEN Ⅴ. THE EFFECT OF MERCAPTAN ADDITIVES
A kinetic study on the photopolymerization of methyl methacrylate (MMA) with benzophenone(BP)/triethylamine (TEA)/mercaptan systems as initiator has been carried out in the presence of oxygen.It was found that both aliphatic and aromatic thiols promote the photooxidation process
leadingto obvious decrease in induction period of photopolymerization. The rate-aereleration of aromaticthiols is more effective than that of aliphatic ones
such as p-toluene thiol used as additive increasesthe relative quantum yieldφO2/φN2 to 1.8.
Abstract
A kinetic study on the photopolymerization of methyl methacrylate (MMA) with benzophenone(BP)/triethylamine (TEA)/mercaptan systems as initiator has been carried out in the presence of oxygen.It was found that both aliphatic and aromatic thiols promote the photooxidation process
leadingto obvious decrease in induction period of photopolymerization. The rate-aereleration of aromaticthiols is more effective than that of aliphatic ones
such as p-toluene thiol used as additive increasesthe relative quantum yieldφO2/φN2 to 1.8.
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