1,2 hexanediol as an alternative cosurfactant for preparing palm-based microemulsions for practical applications
Raman, IAb; Lye, OT; Ahmad, S; Suhaimi, H
| HERO ID | 4684042 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | 1,2 hexanediol as an alternative cosurfactant for preparing palm-based microemulsions for practical applications |
| Authors | Raman, IAb; Lye, OT; Ahmad, S; Suhaimi, H |
| Journal | Journal of Dispersion Science and Technology |
| Volume | 29 |
| Issue | 7 |
| Page Numbers | 1003-1009 |
| Abstract | Microemulsions (mu E) were prepared with palm fatty acid esters (PFAME) as solvents stabilised by fatty alcohol ethoxylates (hydrophilic-lipophilic balance, HLB value similar to 12.8), and 1,2 hexanediol as a co-surfactant. The effects of co-surfactant on the ternary phase systems were studied only at 10, 15, 20, 25, and 30% (w/w) of surfactant concentrations. The ratio of PFAME/water was chosen at 30:70 only. The mixtures were mixed vigorously and then kept at ambient temperature (25 degrees C) for few days. The emulsions (two-phase), mu E and liquid crystalline phases were observed using the polarised light. In addition, the physical stability (accelerated test/month at 45 degrees C),conductivity and viscosity for mu E solutions were measured. The effects of co-surfactant on the ternary phase systems for PFAME/non-ionic surfactant/water were constructed at 25 and 45 degrees C. The result showed that larger mu E region was formed with PFAME 1 than the PFAME 2 at 30:70 ratio of oil to water. The minimum concentration of surfactant for producing clear, low viscosity and thermodynamically stable mu E solutions was 10% (w/w) for both PFAME 1 and PFAME 2 at 25C. However, the concentration of co-surfactant used to produce mu E solutions was 12.5% for PFAME 1 but was 30% (w/w) for PFAME 2. Furthermore, the conductivity and viscosity measurements indicated types of mu E, that is, O/W or W/O formed. |
| Doi | 10.1080/01932690701809997 |
| Wosid | WOS:000257841100012 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | agro and industrial applications; 1,2 hexanediol; microemulsions (mu E); palm fatty acid methyl esters |