一种多头基有机硅季铵盐的合成及其性能.pdfVIP

学兔兔 化 工 进 展 2014年第33卷第2期 CHEMICAL INDU『STRYAND ENGINEERING PROGRESS ·479· 一 种多头基有机硅季铵盐的合成及其性能 丁寒卫，薛永强，崔子祥，郭文涛 (太原理工大学应用化学系，山西 太原 030024) 摘要：以六亚甲基四胺和y一氯丙基三甲氧基硅烷为原料，研究了一种多头基有机硅季铵盐的合成，用FTIR、NMR 对目标产物进行了表征，对其合成工艺进行了优化，并使用微波技术加速了反应速率、提高反应产率，仅用8h 就使产率达到95．6％。另外，对其熔点、表面张力、临界胶束浓度和杀菌性能进行了考察。实验结果表明，该产 物的每个分子上平均含有3个季铵盐基团，熔点为116-3～118．8℃，ycMc为46．30mN／m，l临界胶束浓度CMC为 0．19 g／L，对大肠杆菌的抑菌环直径可达27．4 Cm。 关键词：多头基；有机硅季铵盐；合成；性能 中图分类号：TQ 423 12 文献标志码：A 文章编号：1000—6613(2014)02—0479—04 DOh 1 0．3969~．issn．1 000—66 1 3．20 1 4．02．037 Synthesis and properties of a kind 0f 0rgan0silic0n quaternary ammonium salt with multi—heads in its molecular structure DING Hanwei，XUE Yongqiang，CUIZixiang，GUO Wentao (Department ofApplied Chemistry，Taiyuan University ofTechnology，Taiyuan 030024，Shanxi，China) Abstract：The organic silicone quaternary ammonium salt with multi—heads was synthesized using hexamethylenetetramine and y—chloropropyltrimethoxysilane as raw materials．The target product was characterized by FTIR and NMR．Furthermore，process optimization experiments was ca~ied out． Reaction rate and yield were improved by microwave technology and reaction yield was up to 95．6％ within 8 hours．In addition，the major performance of the target product was investigated，such as fusion point，surface tension，critical micelle concentration and bactericidal property．The product contained three quaternary ammonium groups per molecule on average．Fusion point of the above organosilicon quaternary ammonium salt ranged from 86．2℃ to 88．6℃．YCMC of the product was 46．30