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研究了苯肼(PHZ)及其衍生物引发丙烯腈(AN)聚合以及苯肼作为电子给体与醌作为电子受体形成的电荷转移复合物(CTC)对丙烯腈的引发聚合作用。测定了光聚合时的引发剂、单体指数和聚合活化能分别为0.66、2.1和33.4千焦耳/摩尔。光聚合机理认为是PHZ与AN在光照下形成激基复合物(exciplex),它分解产生自由基引发单体聚合。而暗聚合的机理认为是PHZ与醌形成CTC,CTC再分解引发单体聚合。exciplex与CTC分别已由荧光光谱和紫外吸收光谱检出。
The initiating polymerization of acrylonitrile by the polymerization of acrylonitrile (AN) initiated by phenylhydrazine (PHZ) and its derivatives and the charge transfer complex (CTC) formed by phenylhydrazine as an electron donor and quinone as electron acceptor were studied. The initiator at photopolymerization was measured and the monomer index and polymerization activation energy were 0.66, 2.1, and 33.4 kJ / mol, respectively. The photopolymerization mechanism is believed to be that PHZ and AN form an exciplex under illumination which decomposes to generate free-radical initiated monomer polymerizations. However, the mechanism of dark polymerization is that PHZ forms CTC with quinone and CTC re-decomposes to initiate the polymerization of the monomers. Exciplex and CTC have been detected by fluorescence and UV absorption spectroscopy, respectively.