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本文合成了一类新的二苯酮羧酸胺盐(BPAA),包括具有不同碳链长度的伯胺盐和叔胺盐二个系列共六种化合物。实验结果表明,BPAA和二苯酮(BP)的光物理性质相似,长碳链BPAA分子具有显著的两亲性质,在非水溶液中可发生分子缔合形成反胶束。由BPAA与叔胺(TEA)组成的体系,引发MMA光聚合反应,聚合速度(R_p)比单用BP快得多,其中BPAA叔胺盐比相应的伯胺盐活性高,长链BPAA比短链BPAA活性高。另外还对比了氧气和氮气条件下的聚合反应速度,氧存在时R_p可增加二倍以上。此外还研究了BPAA/TEA浓度对聚合反应的影响。
In this paper, a new class of benzophenone carboxylic acid amine salt (BPAA) was synthesized, including two series of six compounds with primary and tertiary amine salts with different carbon chain lengths. The experimental results show that the photophysical properties of BPAA and BP are similar, and the long chain carbon chain BPAA has a significant amphiphilic character. In non-aqueous solution, molecular association can occur to form reverse micelles. The system consisting of BPAA and TEA initiated the photopolymerization of MMA. The polymerization rate (R_p) was much faster than that of BP alone. The BPAA tertiary amine salt had higher activity than the corresponding primary amine salt and long-chain BPAA ratio BPAA activity is high. In addition, the polymerization rate under oxygen and nitrogen conditions was also compared. Rp could be increased by more than two times in the presence of oxygen. In addition, the effect of BPAA / TEA concentration on the polymerization was also studied.