Conductometric studies on micellization of cetyltrimethylammonium bromide in various alcohols

Morteza Keshavarz

2016 Volume 3 Issue 5

Conductometric studies on micellization of cetyltrimethylammonium bromide in various alcohols

Morteza Keshavarz

Abstract

The effect various aqueous solutions of methanol, ethanol, and propanol on Critical Micelle Concentrations (CMC) of cetyltrimethylammonium bromide (CTAB) has been studied at 30 and 35◦c using Conductometry technique. The values of CMC at various conditions were determined. The trend of variation of CMC Values with temperature and alcohol percentage has been interpreted on the basis of molecular viewpoint and influencing factors on the structure stability of micelle. The results represent a little change in CMC with respect to these factors. The values of CMC at various temperatures do not show significant change indicating the entropy driven of micellization process. This mater can be related to the predominant role of hydrophobic forces in the micelle formation process with respect to electrostatic interaction.

Keywords: Conductometric; CTAB; Alcohols; Critical Micelle Concentrations (CMC)

PDF

References

Lindman B, Wennerstram H, Eicke HJ. Topics in current chemistry: micelles. New York: Springer Verdy 1980, Chpter2.

McIntrie GL. Crit Rev Anal Chem 1990, 21: 257-278.

Nagarajan R, Ruckenstein E. langmuir 1991, 7: 2934-2969.

Skrilec M, Clinlove L. Anal Chem 1980, 52: 1559-1564.

Tanford C. The hydrophobic effect. New York: John Wiley 1980, Chapter 5.

Brobely S, Ostanevich YuM, Vass SZ. J Phys Chem 1989, 93: 7967-8122.

Shinoda K, Nakagawa T, Tamaushi B, Isemura T. Colloidal surfactants: some physico-chemical properties. New York: Academic Press 1963.

Rosen MJ. Surfactants and interfacial phenomena. New York: John Wiley 1978.

Mittal KL. Micellizaton, solubilization and microemulsion. New York: Plenum Press 1977.

Delrio JM, Prietro G, Sarmiento F, Mosquera V. Langmuir 1995, 11: 1511-1514.

Eiworthy PH, Florence AT, Macfarlane CB. Solubilization by surface Actives and its Application to chemistry and Biological Science. New York: Plenum Press 1968.

Roux-Desgranges G, Border S, Roux AH. J Colloid Interface Sci 1994, 162: 284-296.

Bakshi MS, Crisantino R, De Lisi R, Milioto S. Langmuir 1994, 10: 423-431.

Fendler JH. Membran mimetic chemistry. New York: John Wily, 1982.

Shaw DJ. Introduction to colloid and surface chemistry. Oxford: Butter worth-Heinemann 1992.

Jungermann E. Cationic sufractants. New York: Dekker, 1970.

Entomology and Applied Science Letters is an international double-blind peer reviewed publication which publishes scientific research & review articles related to insects that contain information of interest to a wider audience, e.g. papers bearing on the theoretical, genetic, agricultural, medical and biodiversity issues. Emphasis is also placed on the selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance. In addition to full-length research articles and reviews, the journal publishes interpretive articles in a Forum section, Short Communications, and Letters to the Editor. The journal publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance.

Announcement and Advertisement
Announcements regarding scientific activities such as conferences, symposium, are published for free. Advertisements can be either published or placed on website as banners.

Publisher
Institute of Pharmaceutical Sciences (IPS) , University of Veterinary and Animal Sciences, Lahore Pakistan.

Entomology and Applied Science Letters supports the submission of entomological papers that contain information of interest to a wider reader groups e. g. papers bearing on taxonomy, phylogeny, biodiversity, ecology, systematic, agriculture, morphology. The selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance is also important. Distinguished entomologists drawn from different parts of the world serve as honorary members of the Editorial Board. The journal encompasses all the varied aspects of entomological research.