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China Surfactant Detergent & Cosmetics ›› 2019, Vol. 49 ›› Issue (5): 298-303.doi: 10.3969/j.issn.1001-1803.2019.05.004

• Development and application • Previous Articles     Next Articles

Preparation of Gemini surfactants containing rigid groups and their properties after mixed with sodium dodecyl sulfate

ZHANG Wen-zhe,LI Pan,HOU Lin-xi()   

  1. School of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108, China
  • Received:2018-09-27 Revised:2019-04-29 Online:2019-05-22 Published:2019-05-24
  • Contact: Lin-xi HOU E-mail:lxhou@fzu.edu.cn

Abstract:

A Gemini surfactant containing the rigid linking group(G14)was synthesized from phthalic anhydride, epichlorohydrin and N,N-dimethyltetradecylamine. The structure was characterized by electrospray mass spectrometry and 1H NMR. The surface activity and application properties of the mixtures of G14 and sodium dodecyl sulfate(SDS)were studied. The mixed systems have exhibited a lower critical micelle concentration(cmc), a stronger emulsifying ability, and better wetting properties than a single component. When n(G14)∶n(SDS)=1∶2, the cmc is 3.19×10 -5 mol/L; γcmc is 22.3 mN/m; Amin is 0.57 nm 2; pc20 reaches 5.01; Гmax reaches 2.92 μmol/m 2; the cleaning rate of diesel can reach 91.67% at 65 ℃.

Key words: rigid group, Gemini surfactant, compounding, surface activity, application performance

CLC Number: 

  • TQ423.12