Micellisation and thermodynamic properties of sodium dodecyl sulphate in water-1,2-alkanediol co-solvents: chain length effect
Ogunlusi, GO; Bamgboye, OV; Alo, OO; Owoyomi, O
| HERO ID | 2960791 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Micellisation and thermodynamic properties of sodium dodecyl sulphate in water-1,2-alkanediol co-solvents: chain length effect |
| Authors | Ogunlusi, GO; Bamgboye, OV; Alo, OO; Owoyomi, O |
| Journal | Physics and Chemistry of Liquids |
| Volume | 53 |
| Issue | 3 |
| Page Numbers | 376-389 |
| Abstract | Effects of varying concentrations of 1,2-ethanediol, 1,2-butanediol and 1,2-hexanediol (glycols) on the micellisation and thermodynamic properties of sodium dodecyl sulphate (SDS) were studied at temperature range 288-313K by conductometry method. Critical micelle concentration (CMC) of SDS increased in 1,2-ethanediol but decreased in the longer carbon chain glycols in the order: 1,2-hexanediol<1,2-butanediol<pure water<1,2-ethanediol. As temperature increased, CMC of SDS increased linearly in 1,2-ethanediol. Conversely, minimum CMC values were observed in 1,2-butanediol and 1,2- hexanediol between 293K and 303K at the temperature range studied, indicating more ordered water structure is favoured by the longer hydrocarbon chain glycols. [GRAPHICS] values were negative at all temperatures for all glycol concentrations indicating the micellisation process is energetically favourable. Enthalpy-entropy compensation plots gave fairly constant compensation temperature values (approximate to 300K) for all the systems while compensation enthalpy values were less negative as the glycol concentration increased. |
| Doi | 10.1080/00319104.2014.978501 |
| Wosid | WOS:000350368900008 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924554967&doi=10.1080%2f00319104.2014.978501&partnerID=40&md5=1dc8f1add326f2f619b6916e530f6883 |
| Is Public | Yes |
| Language Text | English |
| Keyword | thermodynamic parameters; sodium dodecyl sulphate; 1,2-alkanediols; chain length; micellisation |