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Interaction between cationic and conventional nonionic surfactants in the mixed micelle and monolayer formed in aqueous medium
| Content Provider | Scilit |
|---|---|
| Author | Negm, Nabel A. Sabagh, Ahmad M. El |
| Copyright Year | 2011 |
| Description | Mixed micellization and surface properties of cationic and nonionic surfactants dimethyl decyl-, tetradecyl- and hexadecyl phosphineoxide mixtures are studied using conductivity and surface tension measurements. The models of Rubingh, Rosen, and Clint, are used to obtain the interaction parameter, minimum area per molecule, mixed micelle composition, free energies of mixing and activity coefficients. The micellar mole fractions were always higher than ideal values indicating high contributions of cationics in mixed micelles. Activity coefficients were less than unity indicating synergism in micelles. The negative free energies of mixing showed the stability of the surfactants in the mixed micelles |
| Related Links | http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40422011000600018&lng=en&nrm=iso&tlng=en |
| Ending Page | 1013 |
| Page Count | 7 |
| Starting Page | 1007 |
| ISSN | 01004042 |
| e-ISSN | 01004042 |
| DOI | 10.1590/s0100-40422011000600018 |
| Journal | Química Nova |
| Issue Number | 6 |
| Volume Number | 34 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2011-01-01 |
| Access Restriction | Open |
| Subject Keyword | Química Nova Atomic, Molecular and Chemical Physics Conventional Nonionic Mixed Micelle Monolayer Formed Nonionic Surfactants Aqueous Medium |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
