%0 Journal Article
%T Avalia£¿£¿o por SAXS e DSC das intera£¿£¿es entre H2O e Renex-100
%A Campos
%A Daniella Dias Palombino de
%A Cassu
%A Silvana Navarro
%A Garcia
%A Renata Batista Rivero
%A Queiroz
%A Hiure Anderson Alves da Silva
%A Gon£¿alves
%A Rene Francisco Boschi
%A Kawachi
%A Elizabete Yoshie
%J Qu¨ªmica Nova
%D 2012
%I Sociedade Brasileira de Qu¨ªmica
%R 10.1590/S0100-40422012000200023
%X the aggregation behavior of the non-ionic surfactant renex-100 in aqueous solutions and mesophases was evaluated by saxs in a wide range of concentrations, between 20 and 30 ¡ãc. complementary, water interactions were defined by dsc curves around 0¡ãc. saxs showed that the system undergoes the following phase transitions, from diluted to concentrated aqueous solutions: 1) isotropic solution of renex aggregates; 2) hexagonal mesophase; 3) lamellar mesophase; and 4) isotropic solution. dsc analysis indicated the presence of interfacial water above 70wt%, which agreed with the segregation of free water to form the structural mesophases observed by saxs bellow this concentration.
%K interfacial water
%K non-ionic surfactant
%K mesophase.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-40422012000200023&lng=en&nrm=iso&tlng=en