| 芳香族二硫化物/烯类单体络合光聚合 |
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| 引用本文： | 李妙贞,常志英,聂俊,王尔鉴. 芳香族二硫化物/烯类单体络合光聚合[J]. 影像科学与光化学, 1989, 7(3): 7-14. DOI: 10.7517/j.issn.1674-0475.1989.03.7 |
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| 作者姓名： | 李妙贞 常志英 聂俊 王尔鉴 |
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| 作者单位： | 中国科学院感光化学研究所, 北京 100012 |
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| 摘 要： | 本文采用二苯基二硫及对位取代物(DS)作为光聚合引发剂,得到一些烯类单体(M)的聚合速度,顺序为:丙烯腈(AN)>甲基丙烯酸甲酯(MMA)>苯乙烯(St)。其中丙烯腈的效果最好。对DS的结构,DS及单体的浓度以及溶剂性质的影响都作了研究。从测定的稳态和瞬态电子光谱表明,在该反应体系中,DS和M分子间能形成基态和激发态络合物,这种激发络合物有较长的寿命,因而很有利于DS的自由基生成。文中对DS的光化学初级过程也作了讨论。
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| 关 键 词： | 光聚合 引发体系 芳香族二硫化物 |
| 收稿时间： | 1988-01-29 |
AROMATIC DISULFIDES/VINYL MONOMERS PHOTOPOLYMERIZATION VIA COMPLEXATION |
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| LI MIAO-ZHEN,CHANG ZHI-YING,NIE JUN,WANG ER-JIAN. AROMATIC DISULFIDES/VINYL MONOMERS PHOTOPOLYMERIZATION VIA COMPLEXATION[J]. Imaging Science and Photochemistry, 1989, 7(3): 7-14. DOI: 10.7517/j.issn.1674-0475.1989.03.7 |
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| Authors: | LI MIAO-ZHEN CHANG ZHI-YING NIE JUN WANG ER-JIAN |
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| Affiliation: | Institute of Photographic Chemistry, Academic Sinica, Beijing 100012, P. R. China |
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| Abstract: | In this paper p-substituted diphenyl disulfides (DS) were used as initiators for photo-polymerization. The polymerization rates (Rr) of vinyl monomers increase in the order AN > MM A > St. Acrylonitrile is the most efficient one. The influence of DS structure, concentration of monomer and DS, and the nature of solvents are also studied. The steady and transient electron spectra measured indicate that the intermolecular complex in the ground state and in excited state are formed between DS and M in this system. The excited com-plex exhibits relative long lifetime and facilitates the radical photogeneration of DS. The mechanism of the primary photochemical process of DS was discussed. |
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| Keywords: | Photopolymerization initiation systems aromatic disulfides |
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