Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Studies on the Surfactants of the N-Acyl Amino Acid(part 10) -The Estimation of Theoretical cmc and Micellization Range by Computer Programming-

N-아실 아미노산계 계면활성제에 관한 연구(제10보) - 컴퓨터 프로그래밍에 의한 이론적 임계미셀농도 및 미셀화영역의 산정 -

  • Kim, Tae-Young (Dept. of Ind. and Eng. Chem., Chungbuk Nat. Univ.) ;
  • Rho, Yun-Chan (Dept. of Ind. and Eng. Chem., Chungbuk Nat. Univ.) ;
  • Kim, Hong-Su (Dept. of Chem. Industry Chung Cheong Junior College) ;
  • Kang, Yun-Seog (LG (LTD) Household and Personal care product R&D Institute) ;
  • Nam, Ki-Dae (Dept. of Ind. and Eng. Chem., Chungbuk Nat. Univ.)
  • 김태영 (충북대학교 공업화학과) ;
  • 노윤찬 (충북대학교 공업화학과) ;
  • 김홍수 (충청전문대학교 화학공업과) ;
  • 강윤석 ((주)LG 생활과학연구소) ;
  • 남기대 (충북대학교 공업화학과)
  • Received : 1995.01.27
  • Accepted : 1996.02.28
  • Published : 1996.04.10
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Abstract

Micellization range and cmc for the dilute aqueous solution of N-acyl amino acid type anionic surfactants, that is, sodium N-acyl-N-methyl-${\beta}$-alaninate, sodium N-acyl sarcosinate and sodium N-acyl-N-methyl taurate were investigated by computer programming. The extreme of the curvature of ${\sigma}(C)$ as a new suggested method to determine the cmc and the micellization range was accomplished with computer programming. The values of cmc and micellization range can be obtained by the extreme of the curve by direct processing of only a few experimental data. The values of cmc particulary was in good agreement with those deduced intuitively from the shape of experimental curves of ${\sigma}(C)$.

N-아실 아미노산계 음이온성계면활성제 중 sodium N-acyl-N-methyl-${\beta}$-alaninate, sodium N-acyl sarcosinate 그리고 sodium N-acyl-N-methyl taurate 유도체 12종을 선택하여 묽은 수용액내에서 임계미셀농도와 미셀화 영역을 결정하는 새로운 방법으로서 컴퓨터프로그래밍에 의한 표면장력 곡선의 최대화를 제안하였다. 임계미셀농도와 미셀화 영역은 몇몇 실험치를 직접 프로그램에 대입함으로써 곡선의 최대화에 의해서 이론적으로 산정할 수 있다. 이론적으로 구한 임계미셀농도값들은 실측치와 거의 일치함을 알 수 있다.

Keywords

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