Characterization of microemulsions based on polymeric surfactant
Plaza, M; Solans, C; Stickdorn, K; Tadros, TF; Pons, R
| HERO ID | 4684044 |
|---|---|
| Year | 1999 |
| Title | Characterization of microemulsions based on polymeric surfactant |
| Book Title | Progress in Colloid and Polymer Science |
| Authors | Plaza, M; Solans, C; Stickdorn, K; Tadros, TF; Pons, R |
| Volume | 112 |
| Page Numbers | 126-131 |
| Abstract | Microemulsions formed with water, isopropyl myristate, poly (12-hydroxystearic acid)-poly(ethylene oxide)-poly( 12-hydroxystearic acid) polymeric surfactant and alkanediol have been investigated using small-angle X-ray scattering (SAXS), conductivity and static light scattering measurements at 25 degrees C. The SAXS spectra exhibit two different behaviors depending on which compositions are kept constant. If surfactant and oil concentrations are constant, the peak position remains constant as the volume fraction increases. On the other hand, if surfactant and cosurfactant concentrations are constant, the peak position shifts to lower cl values as the volume fraction increases. From a certain volume fraction, the peak position stops shifting and remains constant as the volume fraction continues increasing. It is interesting to note that the constant peak position is the same for both behaviors. The microemulsion structure is difficult to ascertain solely on the basis of the X-ray spectra but, from the conductivity and static light scattering measurements, we can conclude that the structure probably changes from disconnected water domains to some type of connected water domains. From the SAXS measurements self-association of 1,2-hexanediol is observed. |
| Wosid | WOS:000081834100027 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:TRENDS IN COLLOID AND INTERFACE SCIENCE XIII 0340-255X |
| Is Public | Yes |
| Keyword | microemulsion; polymeric surfactant; alkanediol; small-angle X-ray scattering; static light scattering |