The Malaysian Journal of Analytical Sciences Vol 17 No1 (2013): 139 – 145

 

 

 

PHASE BEHAVIOUR OF FATTY ALCOHOL SULPHATE AND FATTY ALCOHOL ETHER SULPHATE FROM PALM BASED

 

(Kelakuan Fasa Lelemak Alkohol Sulfat Dan Lelemak Alkohol Eter Sulfat Berasaskan Sawit)

 

Nur Syazani Harun, Norhana Nabila Mohamed Talip, Liew Kin Hong,

Mohd Suzeren Md Jamil, Rahimi M. Yusop*

 

School of Chemical Sciences and Food Technology, Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 Bangi Selangor, Malaysia

 

*Corresponding author: rahimi@ukm.my

 

 

Abstract

The phase diagrams of fatty alcohol sulphates (FAS)/ fatty alcohol ether sulphates (FAES)/water and mixed FAS:FAES (1:1)/propylene glycol/water were constructed at room temperature. Another phase diagram of mixed FAES/FAS/soap (4.5:4.5:1.0)/propylene glycol/water were established at 60˚C. Birefringence was observed under cross-polarized light and their phase changes examined under a polarized microscope. The liquid crystalline region for FAES and FAS occurred only in a small region. The optical patterns of lamellar liquid crystal observed were oily streaks and a typical fine cross-striated structure.

 

Keywords: lamellar liquid crystal, FAS, FAES, anionic surfactant, ternary phase diagram

 

References

1.       Lynn, J. 1991. Detergency. John Wiley & Sons, New York: 1072-1117.

2.       Scamehorn, J.F., & J.H. Harwell. 1993. Precipitation of Surfactant Mixtures, in Mixed Surfactant systems, . New York: 283-312.

3.       Scamehorn, J.F.1986. An overview of Phenomena Involving Surfactant Mixtures, in Phenomena in  Mixed Surfactants Systems: 1-27 .

4.       Cheryl, H., Rodriguez, Chanin, C., Scamehorn, J.F., Chintana, S., and Sumaeth, C.1998. Precipitation in Solutions Containing Mixtures of Synthetic Anionic Surfactants and Soap. J. Surf.  Det. 1: 321-325.

5.       Michael F. Cox, Nelson F. Borys and Ted P. Matson.1985. Interactions between LAS and Nonionic Surfactants. J. Am. Oil Chem. Soc. 62:1139-1143.

6.       Scamehorn, J.F., and J.H., Harwell.1993. Precipation of surfactants mixtures, in Mixed   Surfactant Systems, edited by K.Ogino and M. Abe, Marcel Dekker, Inc., New York: 283-312.

7.       Comellas, F., Megias, V., Sanches, J., Parra, J.L.,  Coll, J.,  Ballaguera, F. and  Pelejero, C.  1989. Applications of ternary systems in specific cosmetic formulation. Int. J. of Cosmetic Sci. 11: 5-19.

8.       Hauthal, H.G. 2001. 48th SEPAWA Congress 2001,  J.  Applied Sci. 127: 8-12.

9.       Caroline. 1999. Liquid crystal in cosmetic emulsion, Personal Care Ingredients Asia, Step publishing limited: 120-129.

10.    Nielsen, M., Drews, B. 2001. Lamellar liquid crystals in o/w cosmetic emulsion. Int.l J.  Applied Sci. 127: 8-12.

11.    Hauthal, H.G. 2001. Würzburg conference-Progress on Detergents, Würzburg conference-Progress on Detergents, Int. J. Applied Sci. 127:  8- 12.

 

 

 

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