共查询到14条相似文献,搜索用时 46 毫秒
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8-丙烯酰氧喹啉及其聚合物与四溴化碳双组分体系敏化的丙烯腈光聚合 总被引:1,自引:0,他引:1
Photopolymerization of acrylonitrile (AN) sensitized by binary component initiators consisting of 8-acryloyloxyquinoline (AQ) and its polymer (PAQ) with carbon tetrabromide (CTB) are investigated kinetically. It is found that the polymerization rates are proportional to 0.19th power of AQ concentration, 0.35th power of CTB concentration and 0.62th power of AN concentration for AQ-CTB system initiation system; proportional to 0.24th power of PAQ concentration, 0.22th power of CTB concentration and 1.0th power of AN concentration initia-ted by above systems are obtained to be 5.26Kcal/mol and 6.34Kcal/mol respectively. It is also found that the polymerization rates sensitized by addition of CTB to AQ or PAQ are much higher than that ofAQ or PAQ alone. Forom the fluorescence analysis of AN polymers,it is confirmed that AQ or PAQ joints into the AN polymer chains. The molecular weight of PAN sensitized by the binary initiatorsystems is lower than that of AQ or PAQ sensitized. 相似文献
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N-甲基丙烯酰-N′-嘧啶基哌嗪及其聚合物敏化的丙烯腈光聚合 总被引:1,自引:2,他引:1
The photopolymerization of acrylonitrile (AN) sensitized by N-methacrylyl-N'-pyrimidi-nopiperazine (MPMP) and its polymer, P(MPMP) was studied kinetically. It was found that the photopolymerization rate of AN sensitized by monomeric MPMP is proportional to 0.35th power of MPMP concentration and 0.85th power of AN concentration, respectively. In the case sensitized by Polymeric MPMP, P(MPMP) is proportional to 0.30th power of P(MP-MP) concentration and 1.0 power of AN concentration, respectively. The overall activation energies for photopolymerization sensitized with MPMP and P(MPMP) were determined to be 4.71Kcal/mol and 4.58Kcal/mol,respectively.From the fluorescence analysis for P(AN) senstitized by either MPMP or P(MPMP),it was confirmed that MPMP and P(MPMP) not only sensitized the photopolymerization of AN but also entered into the P(AN) chains. 相似文献
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关于含有芳香叔胺基的烯类单体,我们曾报道过N,N-二甲氨基苯乙烯,N-(4—N′,N′-二甲氨基苯基代丙烯酰胺(DMAPAA),N-(4-N′,N′-二甲氨基苯基代甲基丙烯酰胺(DMAPMA),甲基丙烯酸-4-N,N-二甲氨基苄脂(DMABMA),8-丙烯 相似文献
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在同一分子中既含有电子给体基团,又含有电子受体基团的单体,如甲基丙烯酸二甲氨基苄酯(DMABMA),N-(4-N′,N′-二甲氨基苯基)代丙烯酰胺(DMAPAA)及其聚合物的荧光光谱颇为有趣。 相似文献
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The photopolymerization of acrylonitrile sensitized by N-methyl-N-(2-methacryloyloxye-thyl)aniline (MEMA) was studied kinetically. The photopolymerization rate of AN in DMF by using MEMA as sensitizer is proportional to 0.32 th power of MEMA concentration and 1.20 th power of AN concentration. The overall activation energy for the polymerization was found to be 4.82 Kcal/Mol. From the fluorescence analysis of obtained polyacrylonitrile sensitized by MEMA, it was confirmed that MEMA not only joined the inition but also entered into the polyacrylonitrile chains. The initiation mechanism was proposed tentatively. 相似文献
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亚甲蓝-三乙酰基丙酮合锰(Ⅲ)配合物体系光敏化引发丙酰胺聚合反应研究 总被引:1,自引:0,他引:1
<正> 染料和三乙酰基丙酮合锰(Ⅲ)配合物(Mn(AA)_3)体系,作为聚合过程的引发物质而用于非银盐成像工艺中.Chaberek等在水溶液中研究了硫堇-二乙酰基丙酮合铜(Ⅱ)和铝(Ⅲ)体系,认为首先是金属配合物水解生成的配体发生酮-醇互交,而配体的烯醇式阴离子是引发聚合的活性物质.我们曾报道了硫堇-Mn(AA)_3体系在醇溶液中光敏化引发丙烯酰胺聚合的研究,发现在醇溶液中,敏化引发聚合的活性物质,显然不同于水溶液中的情况.本文研究了亚甲蓝-Mn(AA)_3体系在醇溶液中敏化引发丙烯酰胺聚合,表明它是比硫堇-Mn(AA)_3更为有效的光敏化引发体系. 相似文献