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China Surfactant Detergent & Cosmetics ›› 2014, Vol. 44 ›› Issue (4): 181-185.doi: 10.13218/j.cnki.csdc.2014.04.041

• Basic research •     Next Articles

Synthesis and properties of ethoxylated sulfobetaine and ethoxylated amine oxide

ZHANG Hui-nian, HOU Li-ya, LIU Xue-feng   

  1. School of Chemical & Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China
  • Received:2013-12-02 Online:2014-04-22 Published:2019-04-09

Abstract: Ethoxylated (3) N,N-dimethyl-N-dodecyl amine oxide (C12EO3AO) and ethoxylated (3) sulfobetaine (C12EO3SBe) were synthesized by the reaction of N,N-dimethyl-N-dodecyl polyoxyethylene (3) amine with H2O2 and 1,3-propanesultone respectively.The cmc of C12EO3AO and C12EO3SBe was measured by Du Nouy ring method as 6.03×10-5 and 7.80×10-5 mol·L-1 respectively,at 25 ℃.Comparing to compounds with similar chemical structure dodecyl dimethyl amine oxide (C12AO) and dodecyl dimethyl sulfobetaine (C12SBe),the cmc of C12EO3AO and C12EO3SBe is one order of magnitude lowered.The salt tolerance and the resistance to hard water of C12EO3AO and C12EO3SBe are similar to that of C12AO and C12SBe.However,the foaming power,wetting power and lime soap dispersing power of C12EO3AO and C12EO3SBe are enhanced significantly.

Key words: ethoxylated amine oxide, ethoxylated sulfobetaine, synthesis, property

CLC Number: 

  • TQ423