dc.contributor.author |
Kumar, Sanjeev |
|
dc.contributor.author |
Patel, Harsha |
|
dc.contributor.author |
Sandeep R. Patil |
|
dc.date.accessioned |
2016-05-11T09:24:39Z |
|
dc.date.available |
2016-05-11T09:24:39Z |
|
dc.date.issued |
2013 |
|
dc.identifier.issn |
1435-1536 (Online) |
|
dc.identifier.issn |
0303-402X (Print) |
|
dc.identifier.other |
10.1007/s00396-013-2942-9 |
|
dc.identifier.uri |
http://27.109.7.66:8080/xmlui/handle/123456789/264 |
|
dc.description |
Colloid and Polymer Science, Volume 291, Issue 9 , pp 2069-2077 |
en_US |
dc.description.abstract |
Phenomenon of clouding in charged micellar solutions is a fairly recent addition to conventional phenomenon shown by aqueous nonionic micelles. In this paper, we have tested a Hofmeister-like ordering of charged headgroups in the context of cloud point (CP) and micellar growth. For this purpose, we have used various combinations of surfactant (sodium dodecyl sulfate, SDS; sodium dodecylbenzene sulfonate, SDBS; sodium salts of α-sulfonato myristic acid methyl ester, MES; and α-sulfonato palmitic acid methyl ester, PES) and tetra-n-butylammonium bromide (TBAB). Different surfactant concentrations and TBAB concentrations are used and CP measurements have been performed. CP values were found in the order SDBS < SDS < PES < MES for the same concentration of surfactant and TBAB. This order has been discussed in the light of water affinities of interacting ionic species (i.e., surfactant headgroup and TBA+ counterion). The ordering was found similar for the case of micellar growth studied by dynamic light scattering (DLS). A bimodal distribution of aggregate size was found that transforms to giant aggregates at CP. The micelles of roughly 10-nm size convert to aggregates of 1 μm. The study has a few novelties: (1) headgroup dependence of CP, (2) micellar growth on heating, and (3) confirmation of Hofmeister-like series of headgroup. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer Berlin Heidelberg |
en_US |
dc.subject |
Surfactant |
en_US |
dc.subject |
Cloud point |
en_US |
dc.subject |
Hofmeister series |
en_US |
dc.subject |
Micelle |
en_US |
dc.subject |
Dynamic light scattering |
en_US |
dc.title |
Test of Hofmeister-like series of anionic headgroups: clouding and micellar growth |
en_US |
dc.type |
Article |
en_US |