Artigo
2012
Saxs and DSC evaluation of interactions between H 2O and Renex-100
Autores
De Campos, Daniella Dias Palombino
Cassu, Silvana Navarro
Garcia, Renata Batista Rivero
Da Silva Queiroz, Hiure Anderson Alves
Kawachi, Elizabete Yoshie
Quimica Nova , vol. 35 , no. 2 , pp. 355-359
ISSN: 01004042
3
Citações
6
Autores
Resumo
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°C. Complementary, water interactions were defined by DSC curves around 0°C. 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.
Palavras-chave
Interfacial water
Mesophase
Non-ionic surfactant
Chemistry (all)
(CHEM)
: Scopus
Última atualização: 2026-06-25
:
2-s2.0-84859939370