烷基链长度和EO基团数量对表面活性剂润湿性的影响

Effect of Alkyl Chain Length and EO Number of Surfactants on Their Wettability

系统研究了烷基链长度对阳离子表面活性剂CnTAB润湿性的影响,同时研究了EO基团数量对阴离子表面活性NP(EO)mSO3Na润湿性的影响。结果表明,CnTAB的润湿性随烷基链长度(n)增加而增强。NP(EO)mSO3Na的润湿性随EO基团数目(m)增加先减弱后增强,m为7时的润湿性最强。

Effect of alkyl chain length on wettability of cationic surfactant CnTAB was systimatically inveatigated.Meanwhile,effect of EO number on wettability of anionic surfactant NP(EO)mSO3Na was systimatically studied.The results show that the wettability of CnTAB becomes stronger with increasing the alkyl chain length (n).The wettability of NP(EO)mSO3Na becomes weaker and then stronger with the increase of EO number (m),showing strongest wettability at m=7.