| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5408108 | Journal of Molecular Liquids | 2017 | 17 Pages |
Abstract
The effects of 0.2% (w/v) methylparaben (0.2MP) on the micellization, intermicellar association and gelation characteristics of poloxamer 407 (PX) in aqueous solution as well as the water distribution in PX based samples have been investigated. Differential scanning calorimetry (DSC) studies demonstrated that 0.2MP shifted the critical micellization temperature (CMT) of PX to a lower temperature. According to sub-ambient DSC determination, 0.2MP disturbed interfacial water surrounding PX and decreased CMT. Flow curves revealed that intermicellar association of PX was promoted by 0.2MP. Since more intermicellar packing facilitated the thermoresponsive gelation, the reduction of the sol-gel transition temperature of PX was also substantiated in the presence of 0.2MP as indicated by temperature sweep tests.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Wannisa Boonlai, Vimon Tantishaiyakul, Namon Hirun, Suppalak Phaisan, Thitima Uma,