Please use this identifier to cite or link to this item:
Title: Energetic, surface-chemical and hydrodynamic studies on cetyltrimethylammonium bromide and sodium salicylate
Authors: Roy, B K
Moulik, S P
Issue Date: Jan-1999
Publisher: NISCAIR-CSIR, India
Abstract: Molecular interaction between cetyltrimethylammonium bromide (CTAS) and sodium salicylate (NaSal) has been investigated. A 1:1 complex is formed in solution. The mixed solution at this composition micellizes at 0.12 mmol dm-3 at 30o C , and the mixed micelle binds nearly 55% counter-ions. The molecular complex formation between CTAS and NaSal combination is an exothermic process. The micellization of CTAS-NaSal combination is also exothermic and a two-step process, the overall enthalpy values falling in the range of 10-15 kJ mol-1 at 30o C. The micellization process is prominently entropy controlled. The surface excess of CTAB and its minimum area at the air-water interface in NaSal, NaCI and NaSr environments have been determined. The CTAS-NaSal system is non-Newtonian and viscoelastic, and show shear thinning properties.
Page(s): 17-25
Appears in Collections:IJC-A Vol.38A(01) [January 1999]

Files in This Item:
File Description SizeFormat 
IJCA 38A(1) 17-25.pdf1.81 MBAdobe PDFView/Open

Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.