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1、------------------------------------------------------------------------------------------------酯基Gemini型季铵盐表面活性剂的合成与性能第4卷第3期江南大学学报(自然科学版)Vol.4 No.32005年4月Jun. 2005JournalofSouthernYangtzeUniversity(NaturalScienceEdition) 文章编号:1671-7147(2005)03-0306-04王中才, 许虎君3, 包新颜
2、, 许芳萍, 彭奇均(江南大学化学与材料工程学院,江苏无锡214036)ω摘 要:合成了系列酯基Gemini型季铵盐表面活性剂22双).采用红外光谱和核磁共振进行结构分析;种已合成的酯基Gemini同时测定了产物的表面活性、泡沫性能和乳化性能,:,其--4mol/L之间,而相应的单季铵盐表面活性剂C14TABr和C124100×10-3mol/L及1150×10-2mol/L;酯基Gemini型季铵.关键词:基Gemini型季铵盐表面活性剂;临界胶束浓度;泡沫;乳化中图分类号:TQ423.121文献标识码:ASynthesis
3、andSurface2ActivePropertiesofEsterquatGeminiSurfactantWANGZhong2cai, XUHu2jun3, BAOXin2yan, XUFang2ping, PENGQi2jun(SchoolofChemicalandMaterialEngineering,SouthernYangtzeUniversity,Wuxi214036,China)——————————————————————————————————————------------------------------
4、------------------------------------------------------------------αandωAbstract:AseriesofesterquatGeminisurfactants,alkanediyl22bis(dimethylacyloxyethylammoniumbromide)weresynthesized.TheproductswerequalitativelydetectedandverifiedbyIRspectraand1H2NMRspectra,andwere
5、alsoquantitativelydeterminedbythetwo2phasechemicaltitration.TheresultsshowedthatthepurityofthesixsynthesizedesterquatGeminisurfactantsaregreaterthan9815%inweight.Thesurfaceactivity、foamingpropertityandemulsificationpropertityweredeterminedaswell.Theresultsshowedthat
6、esterquatGeminisurfactantssynthesizedhaveveryhighsurfaceactivityandtheircriticalmicelleconcentrationisbetween4146×1025～4117×1024mol/L.Thecriticalmicelleconcentrationoftheirsingle2chaincounterparts,thaiisC14TABrandC12TABr,is4100×1023mol/Land1150×1022mol/L,respectivel
7、y.EsterquatGeminisurfactantshaveevenbetterfoam?stabilityandemulsifyingabilitycomparedwiththecorrespondingsingle2chainsurfactants.Keywords:esterquatGeminisurfactant;criticalmicelleconcentration;foam;emulsification 近年来,Gemini型表面活性剂已成为国内外胶体和界面化学研究开发的热点和重点.目前主要对 收稿日期:
8、2004-09-20; 修订日期:2004-11-12.双烷链Gemini——————————————————————————————————————---------------------------------------------------------------
