NDLI: Distinctive effect of maleic acid and fumaric acid on structural transitions in cationic micellar solution

Content Provider	Springer Nature Link
Author	Linet Rose, J. Tata, B. V. R. Talmon, Yeshayahu Aswal, V. K. Hassan, P. A. Sreejith, Lisa
Copyright Year	2015
Abstract	Isomeric additives, maleic and fumaric acids (MA and FA) showed a distinctive influence on the structural transition induced by n-octanol in aqueous cetyltrimethylammonium bromide (CTAB) solution. With MA, significant increase in viscosity was observed on successive addition of n-octanol. Samples with high n-octanol concentration showed viscoelasticity. However, no such dramatic change was observed with FA. Rheological studies revealed the existence of entangled threadlike micelles in CTAB/MA/n-octanol system. Newtonian flow behaviour exhibited by the FA-containing samples indicated the presence of spherical micelles. The existence of threadlike micelles in MA containing samples was further confirmed by cryogenic transmission electron microscopy and small-angle neutron scattering studies. The favourable geometry and better acidic strength of MA are regarded as the factors synergistically facilitating unidimensional micellar growth in the presence of n-octanol. In contrast, the stronger hydrophobicity of FA resulting from trans geometry and feeble ionization, modifies the solvent properties and retards micellar growth.
Starting Page	1383
Ending Page	1390
Page Count	8
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	293
Issue Number	5
e-ISSN	14351536
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-01-31
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geometrical isomers Threadlike micelles Viscoelasticity Cryo-TEM Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry Food Science Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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