二烯丙基甲基烷基季铵盐的合成及表征

Synthesis and Characterization of Diallylmethylalkyl Quaternary Ammonium Salts

摘要:

本文合成了4种不同烷基取代的二烯丙基甲基季铵盐单体。以二烯丙基甲基胺和不同碳链的1-溴代直链烷为原料，合成了4种二烯丙基甲基烷基（C3、C5、C7、C9）季铵盐，考察了季銨化反应的反应时间、反应温度、原料摩尔配比及溶剂种类对产物收率的影响，用IR、1HNMR和13CNMR对产物结构进行了表征。结果表明：在最佳合成条件下，产物收率分别为78.18%、82.54%、84.63%和81.32%，产物具有预期结构，并在极性溶剂中溶解性较好，其熔点随烷基链长度的增加而降低。上述工作为相应聚合物的制备、机理和应用研究提供了基础。

Abstract:

In this article，four kinds of different alkyl substituted diallylmethyl quaternary ammonium salt monomers were synthesized. Four kinds of diallylmethylalkyl (C3, C5, C7, C9) quaternary ammonium salts were synthesized using diallylmethylamine and 1-bromide straight chain alkanes as raw materials.The effects of reaction on time，temperature，molar ratio of raw materials and different solvents were discussed. Structures of the products were characterized by IR，1HNMR and 13CNMR. The results showed that the yields of the products were 78.18%，82.54%，84.63% and 81.32%，respectivly,under the optimum synthetic conditions. The obtained products possessed the expected structures. In addition，the products were miscible well with polar solvent and their melting points decreased with the increase of the straight alkyl chain length. The progresses completed above had provided a foundation for the researches on preparation，mechanism and application of the corresponding polymers.