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China Surfactant Detergent & Cosmetics ›› 2017, Vol. 47 ›› Issue (3): 121-125.doi: 10.13218/j.cnki.csdc.2017.03.001

• Basic research •     Next Articles

Relationship between structure and physicochemical properties of polyoxyethylene sulfobetaines surfactants

CHEN Hui, HOU Li-ya, LIU Xue-feng   

  1. School of Chemical & Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China
  • Received:2016-12-07 Published:2019-03-19

Abstract: In order to find the structure-performance relationship of nonionic-zwitterionic hybrid surfactants,N,N-dimethyl-N-dodecyl polyoxyethylene (n) sulfobetaines (C12EOnSBe) with separate polyoxyethylene length (n=1-4) were taken as studying object.Data for critical micelle concentration (cmc) and number of micellar aggregates (Nm) were obtained by drop-volume method and time-resolved fluorescence method.Results showed that,as comparing with the conventional N,N-dimethyl-N-dodecyl sulfobetaine (C12SBe),cmc of C12EOnSBe (n=1-4) is lower.Following the increase of n,cmc of C12EOnSBe (n=1-4) declines;saturated adsorption (Γm) increases;the minimum molecular cross-sectional area (Amin) deceases;and the critical micellar aggregation number (Nm,c) decreases as well.

Key words: hybrid surfactant, N,N-dimethyl-N-dodecyl polyoxyethylene (n) sulfobetaines, the structure-performance relationship

CLC Number: 

  • TQ423