Photopolymerization of acrylonitrile and methyl methacrylate induced by triphenylamine

Polymer Photochemistry Pub Date : 1986-01-01 DOI:10.1016/0144-2880(86)90047-3

Hitoshi Kubota, Yoshitaka Ogiwara

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引用次数: 4

Abstract

The photopolymerization of acrylonitrile and methyl methacrylate in the presence of triphenylamine (TPA) has been performed at 30°C in N,N-dimethylformamide and dimethylsulfoxide under irradiation with light of λ > 300 nm. TPA proved to be very effective for the polymerization of both monomers. An apparent activation energy of 4·3 kcal/mol was recorded for the photopolymerization of acrylonitrile. Equations of polymerization derived from a kinetic study were as follows: $Rate of polymerization=K[TPA]^{12} [Monomer]^{1·0}$ $Degree of polymerization=K′[TPA]^{−12} [Monomer]^{1·0}$ From the UV spectrum of photoirradiated TPA in N,N-dimethylformamide solution, the formation of N,N-diphenylamine and aniline was observed, in which the photodecomposition of TPA might result.

Based on these results, it was suggested that radicals formed in the process of photodecomposition of TPA are responsible for the initiation of the photopolymerization, which proceeds through an ordinary mechanism of radical polymerization.

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三苯胺诱导丙烯腈与甲基丙烯酸甲酯的光聚合

在λ >光的照射下，在30℃条件下，在N,N-二甲基甲酰胺和二甲基亚砜中进行了丙烯腈和甲基丙烯酸甲酯在三苯胺(TPA)存在下的光聚合反应。300海里。TPA对这两种单体的聚合都非常有效。丙烯腈光聚合反应的表观活化能为4·3 kcal/mol。聚合速率=K′[TPA] 12[单体]1·0聚合度=K′[TPA]−12[单体]1·0在N,N-二甲基甲酰胺溶液中，通过紫外光谱观察到TPA在N,N-二苯胺和苯胺的形成，并可能发生TPA的光解反应。基于这些结果，我们认为TPA在光分解过程中形成的自由基是引发光聚合的原因，而光聚合是通过普通的自由基聚合机制进行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Photochemistry

CiteScore

1.20

自引率

0.00%

发文量