Studies on the Gemini Type Amphipathic Surfactant(5) - Preparation and Properties of Double Chain Surfactant with Two Sulfonate Groups Derived from N-Acyldiethanolamines -

제미니형 양친매성 계면활성제에 관한 연구(제5보) - 함질소 장쇄아실디에탄올아민으로부터 유도된 두 개의 술폰산 염기를 갖는 화합물의 합성 및 계면특성 -

  • 윤영균 (충북대학교 공과대학 공업화학과) ;
  • 정환경 (미국 메사츄세스대학 고분자 공학과) ;
  • 정노희 (충북대학교 공과대학 공업화학과) ;
  • 남기대 (충북대학교 공과대학 공업화학과)
  • Received : 1998.02.19
  • Accepted : 1998.04.24
  • Published : 1998.08.10

Abstract

Amphipathic compounds (bis-sulfonate Gemini type) with double or triple long chain alkyl groups were prepared by the reaction of N-(long chain acyl)diethanolamine diglycidyl ethers with fatty alcohols, followed by the reaction with propanesultone. All these new Gemini type surfactants were soluble in water and showed much better micelle forming ability and lowering surface tension than sodium dodecyl sulfonate with one sulfonate group. cmc and ${\Upsilon}$ cmc values of the triple-chain compounds were still much smaller than those of the corresponding double-chain compounds with two common alkyl groups. The efficiency of adsorption at the water/air interface ($pC_{20}$) of these surfactants was very high. Their foaming properties, wetting ability toward a felt chip, and lime-soap dispersing requirement (LSDR) were measured. Their initial foaming properties were high but showed good low foam stability, wettability and LSDR.

Keywords

Gemini Surfactant;N-acyldiethanolamine;Synthesis;Surface Activity

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