The degree of polydispersity in micellar dispersions: A sum rule approach
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
20/10/2012
20/10/2012
2011
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| Resumo |
Statistical properties of a two-dimensional ideal dispersion of polydisperse micelles are derived by analyzing the convergence properties of a sum rule set by mass conservation. Internal micellar degrees of freedom are accounted for by a microscopic model describing small displacements of the constituting amphiphiles with respect to their equilibrium positions. The transfer matrix (TM) method is employed to compute internal micelle partition function. We show that the conditions under which the sum rule is saturated by the largest eigenvalue of the TM determine the value of amphiphile concentration above which the dispersion becomes highly polydisperse and micelle sizes approach a Schultz distribution. (C) 2011 Elsevier B.V. All rights reserved. Brazilian agency CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Brazilian agency FAPESP Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) |
| Identificador |
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v.384, n.1/Mar, p.352-357, 2011 0927-7757 http://producao.usp.br/handle/BDPI/29214 10.1016/j.colsurfa.2011.04.013 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE BV |
| Relação |
Colloids and Surfaces A-physicochemical and Engineering Aspects |
| Direitos |
closedAccess Copyright ELSEVIER SCIENCE BV |
| Palavras-Chave | #Statistical thermodynamic properties of micellar dispersions #Polydispersity #Sum rule #Micelle size distribution #DNA DENATURATION #BILAYERS #MODEL #Chemistry, Physical |
| Tipo |
article original article publishedVersion |
