화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.20, No.5, 479-485, October, 2009
Export Citation
수용액의 pH가 Triethanolamine-Ester Quaternary Ammonium Salt 양이온 계면활성제 시스템의 물성에 미치는 영향에 관한 연구
Effect of pH on Physical Properties of Triethanolamine-Ester Quaternary Ammonium Salt Cationic Surfactant System
김지성, 임종주†
  • 동국대학교 공과대학 화공생물공학과
JiSung Kim, and JongChoo Lim†
  • Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, Korea
E-mail:
초록
본 연구에서는 triethanolamine-ester quaternary ammonium salt의 ASCO EQ85 양이온 계면활성제 시스템의 기본 물성을 측정하였으며, 제타 전위 측정 및 quartz crystal microbalance 실험을 통한 계면활성제 흡착량 측정으로부터 pH 조건에 따른 섬유 유연력에 관하여 살펴보았다. ASCO EQ85 계면활성제의 CMC는 약 3 × 10^(-3) mol/L이며, CMC에서의 표면장력은 약 40 mN/m이었다. 25 ℃에서 1 wt% 계면활성제 수용액과 n-dodecane 사이의 계면장력을 spinning drop tensiometer를 사용하여 pH에 따라 측정한 결과, pH 증가에 따라 계면장력은 약간 증가하였으나 평형에 도달하는 시간은 pH에 관계없이 거의 일정하였다. 계면활성제 흡착량은 농도에 비례하여 증가하는 경향을 보였으며, 수용액의 pH 조건에 따라 계면활성제 흡착량이 변화하였다. 계면활성제 수용액의 pH에 따라 유연력을 측정한 결과, pH 증가에 따라 양이온 계면활성제로 세정한 섬유의 마찰계수가 증가하였으며, 양이온 계면활성제 수용액의 pH가 산성 조건일 때 섬유의 유연 효과가 크다는 것을 확인할 수 있었다. 계면활성제 수용액의 거품 안정성을 측정한 결과, 수용액의 pH가 증가함에 따라 거품의 부피가 반으로 줄어드는데 걸리는 시간이 증가하고 거품 안정성이 증가하였다.
In this study, basic physical properties were measured for ASCO EQ85 cationic surfactant of triethanolamine-ester quaternary ammonium salt and effect of pH on softening performance on fabrics was investigated using zeta potential measurement and adsorption experiment by quartz crystal microbalance. The CMC of the surfactant was near 3 × 10^(-3) mol/L and the surface tension at CMC was about 40 mN/m. The interfacial tension measurement between 1 wt% aqueous solution and n-dodecane measured by spinning drop tensiometer showed that interfacial tension slightly increased with an increase in pH but the equilibration time was not affected by pH. The surfactant adsorption was found to increase with an increase in surfactant concentration and was also affected by pH of surfactant solution. The friction factor for fabrics treated with ASCO EQ85 surfactant was shown to increase with pH and better softening effect was found under acidic conditions. Half-life for foams generated with ASCO EQ85 surfactant solution increased with pH, which indicated an increase in foam stability with pH.
Keywords:triethanolamine-ester quaternary ammonium salt;cationic surfactant;physical property;pH;softening effect
  1. Miller CA, Neogi P, Interfacial Phenomena: Equilibrium and Dynamic Effects, Surfactant Science Series, 17, 140, Marcel Dekker, New York (1985)
  2. Lim JC, J. Korean Ind. Eng. Chem., 6(4), 610 (1995)
  3. Lim JC, J. Korean Ind. Eng. Chem., 8(3), 473 (1997)
  4. Lee SK, Han JW, Kim BH, Shin PG, Park SK, Lim JC, J. Korean Ind. Eng. Chem., 10(4), 537 (1999)
  5. Ko HK, Park BD, Lim JC, J. Korean Ind. Eng. Chem., 11(6), 679 (2000)
  6. Shin SI, Oh SG, KICNEWS, 4, 40 (2001)
  7. Kim JD, KICNEWS, 4, 48 (2001)
  8. Rang MJ, Kim JD, Oh SG, Lee BM, Lim JC, Hong JD, Kang HH, Lee JG, Recent Research Trends in Colloid and Interface Chemistry, 80, The Korean Federation of Science and Technology Societies, Seoul (2007)
  9. Huber LH, JAOCS, 61, 337 (1984)
  10. Cross J, Singer EJ, Cationic Surfactants, 53, 6, Marcel Dekker, New York (1994)
  11. Milwidsky B, Happi, 9, 40 (1987)
  12. Kim CA, Choi HJ, Yoon HK, Park SY, Kim JY, J. Korean Ind. Eng. Chem., 9(1), 149 (1998)
  13. Rho SB, Lim MA, J. Korean Ind. Eng. Chem., 9(2), 177 (1998)
  14. Bak HS, Choi KY, Lee JD, Kim YK, Ahn HJ, J. Korean Ind. Eng. Chem., 9(3), 404 (1998)
  15. Lyu SG, Lee DH, Sur GS, Lee TJ, J. Korean Ind. Eng. Chem., 10(7), 1096 (1999)
  16. Kang KH, Lim KH, Appl. Chem., 3(2), 172 (1999)
  17. Oh JH, J. Korean Ind. Eng. Chem., 11(1), 80 (2000)
  18. Kim JS, Park JS, Lim JC, Accepted for Publication at J. Kor. Ind. Eng. Chem. (2008)
  19. Kim JS, Park JS, Lim JC, Accepted for Publication at Korean J. Chem. Eng. (2008)
  20. Kim HU, Kang KH, Lim KH, Appl. Chem., 4(2), 280 (2000)
  21. Kim KY, Lim KH, Kwak HY, Appl. Chem., 5(1), 171 (2001)
  22. Kim HU, Lee JK, Lim KH, Appl. Chem., 8(1), 5 (2004)
  23. Nilsson PG, Pacynko WF, Tiddy GJT, Current Opinion Colloid Int. Sci., 9, 117 (2004)
  24. Limin Z, Ganzuo L, Zhiwei S, Colloid Surf. A: Physicochem. Eng. Aspects, 190, 275 (2001)