Avaliação por SAXS e DSC das interações entre H2O e Renex-100
| Contribuinte(s) |
Universidade Estadual de Campinas |
|---|---|
| Data(s) |
01/01/2012
03/12/2015
03/12/2015
|
| 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. 355 359 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
| Identificador |
Química Nova. Sociedade Brasileira de Química, v. 35, n. 2, p. 355-359, 2012. 0100-4042 S0100-40422012000200023 10.1590/S0100-40422012000200023 http://dx.doi.org/10.1590/S0100-40422012000200023 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000200023 http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/23919 |
| Idioma(s) |
pt |
| Publicador |
Sociedade Brasileira de Química |
| Relação |
Química Nova |
| Direitos |
aberto |
| Fonte |
SciELO |
| Palavras-Chave | #interfacial water #non-ionic surfactant #mesophase |
| Tipo |
Artigo de periódico |
