| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 613259 | Journal of Colloid and Interface Science | 2006 | 6 Pages |
The phase diagram of Brij 97/water/IPM systems was determined at 25 °C. Rich liquid crystalline phases including Lα, H1H1, and cubic Fd3mFd3m phases were identified by means of small angle X-ray scattering (SAXS). Microstructure transitions of liquid crystals with changes in surfactant concentration and oil content are explained qualitatively by the surfactant packing parameter (vL/aSlcvL/aSlc). Dynamic rheological results indicate that all three kinds of liquid crystals investigated show high elasticity. The lamellar, Lα, phases formed in Brij 97/water with two different oils, oleic acid and geraniol, were also studied in comparison with those of Brij 97/water/IPM systems. The strength of the network of lamellar phases formed in Brij 97/water/oleic acid and Brij 97/water/geraniol systems are appreciably stronger than for Brij 97/water/IPM systems, indicated by the smaller area of surfactant molecules at the interface and the higher moduli (G′G′ and G″G″).
Graphical abstractPhase diagram for Brij 97/IPM/water system at 25 °C.Figure optionsDownload full-size imageDownload as PowerPoint slide
