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Use of reflectance anisotropy spectroscopy for mapping the anisotropy of lyotropic liquid crystal dispersions in formulations
| Content Provider | Scilit |
|---|---|
| Author | Prescott, Elizabeth M. Rabone, Kenneth L. Smith, Caroline I. Weightman, Peter |
| Copyright Year | 2016 |
| Description | Journal: Liquid Crystals Today Lyotropic liquid crystal dispersions have commercial importance in the formulation of cleaning products and pharmaceuticals. The anisotropy of such dispersions is an important aspect of their properties and a simple method for measurement would be valuable to formulators. The relatively new optical technique of reflectance anisotropy spectroscopy (RAS) was considered to have potential in this respect. To test the idea, the anisotropy of a binary mixture of an anionic surfactant Aerosol OT (AOT) and glycerol (used as a model for water) was investigated using RAS. The variation in the measured anisotropy parallels the expected behaviour of a dispersion of lyotropic liquid crystals as a function of concentration and temperature. A response surface of anisotropy generated as a function of temperature and surfactant concentration demonstrates the use of RAS as a tool for mapping liquid anisotropy to facilitate the formulation of structured liquids. |
| Related Links | https://www.tandfonline.com/doi/pdf/10.1080/1358314X.2016.1242253?needAccess=true https://core.ac.uk/download/pdf/80779107.pdf |
| Ending Page | 73 |
| Page Count | 4 |
| Starting Page | 70 |
| ISSN | 1358314X |
| e-ISSN | 14645181 |
| DOI | 10.1080/1358314x.2016.1242253 |
| Journal | Liquid Crystals Today |
| Issue Number | 4 |
| Volume Number | 25 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2016-10-20 |
| Access Restriction | Open |
| Subject Keyword | Journal: Liquid Crystals Today Pharmacology and Pharmacy Response Surface Reflectance Anisotropy Spectroscopy Di-octyl Sulphosuccinate |
| Content Type | Text |
| Subject | Materials Chemistry Condensed Matter Physics Inorganic Chemistry |
