Differential scanning microcalorimetric study of vesicles in aqueous solutions formed by dimethyldioctadecylammonium bromide
- 1 January 1992
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 88 (23) , 3431-3434
- https://doi.org/10.1039/ft9928803431
Abstract
Differential scanning microcalorimetric data for dimethyldioctadecylammonium bromide (DOAB) in dilute aqueous solutions prepared using different protocols including an ethanol injection method are compared. Reproducible data are obtained for solutions prepared using a hot-water method. Scans for very dilute solutions show evidence for processes controlled by both inter- and intra-vesicular interactions. An extremum in the scans near 47 °C is assigned to a gel to liquid crystal transition involving local domains within each vesicle comprising ca. 130 DOAB monomers.Keywords
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