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表面活性剂EQ-M与SDBS的协同效应研究
引用本文:杨美,蒋晓慧,周丽梅,涂胜.表面活性剂EQ-M与SDBS的协同效应研究[J].西华师范大学学报(哲学社会科学版),2011(2).
作者姓名:杨美  蒋晓慧  周丽梅  涂胜
作者单位:西华师范大学化学化工学院;
摘    要:评价了阳离子型表面活性剂溴化-N-十六烷基-3-吡啶甲酸甲酯和溴化-N-十六烷基-3-吡啶甲酸乙二醇单酯(代号EQ-M)与普通阴离子表面活性剂十二烷基苯磺酸钠(SDBS)之间的协同效应,考察了复配比例对体系表面张力和临界胶束浓度的影响.实验结果表明:EQ-M型阳离子型表面活性剂与阴离子表面活性剂SDBS之间有强的相互作用,当EQ-M与SDBS的比例为1∶1时,二者的协调效应最强;EQ16-CH3与SDBS复配体系的cm c降低了一个数量级,EQ16-OH与SDBS复配后cm c降低了2个数量级;γcm c也有略有下降.结果还表明,头基的结构对协同效应有较大的影响,含有极性头基(羟基)的EQ16-OH与SDBS的协同效应更强,可能的原因是二者之间可以形成氢键,从而导致阴,阳离子表面活性剂之间更加紧密的排列.

关 键 词:阳离子型表面活性剂  SDBS  临界胶束浓度  协同效应  

Study on the Synergism between Cationic Surfactants EQ-M with SDBS
YANG Mei,JIANG Xiao-hui,ZHOU Li-mei,TU Sheng.Study on the Synergism between Cationic Surfactants EQ-M with SDBS[J].Journal of China West Normal University:Natural Science Edition,2011(2).
Authors:YANG Mei  JIANG Xiao-hui  ZHOU Li-mei  TU Sheng
Institution:YANG Mei,JIANG Xiao-hui,ZHOU Li-mei,TU Sheng(College of Chemistry and Chemical Engineering,China West Normal University,Nanchong 637002)
Abstract:The synergic effect between cationic surfactants EQ-M and sodium dodecyl benzoic sulfate(SDBS) has been studied,and the effect of the ratio of EQ-M/SDBS on the surface tension and critical micellar concentration(cmc) of the mixture has been investigated.The results showed that there was strong interaction between EQ-M and SDBS.the strongest synergic effect appeared at a ratio of 1:1 between EQ-M and SDBS,The cmc of mixture system(EQ16-CH3/SDBS) reduced by an order of magnitude,and that of EQ16-OH/SDBS by tw...
Keywords:cationic surfactants  critical micellar concentration  synergic effect  
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