authors |
Bender, CR; Vicente, FA; Kuhn, BL; Frizzo, CP; Villetti, MA; Carvalho, PJ |
nationality |
International |
journal |
JOURNAL OF MATERIALS SCIENCE |
abstract |
A cloud point evaluation was performed for the nonionic surfactant Tergitol 15-S-7 in aqueous solutions of McIlvaine buffer (pH 7.0). Cloud point temperatures of the selected nonionic surfactant were studied in relation to the effect that the addition of dicationic ionic liquids (ILs) had on the systems. The dicationic ILs with different alkyl spacer lengths were derived from 1, n-bis(3-methylimidazolium-1-yl)alkane bromide ([BisAlk(MIM)(2)][2Br]) - in which Alk=But, Hex, Oct, and Dec. The dicationic ILs with longer alkyl spacer chains (Alk >= 6) led to an increase in the Tergitol's cloud point values, due to their ability to fold their structures in solution, which increase the interactions of ILs with tergitol in the mixed micelles. This increase was even more pronounced when the concentration of the dicationic ILs was increased. Furthermore, the addition of dicationic ILs increased the micelles size; however, the hydrodynamic diameter of mixed micelles did not depend on the length of the ILs' alkyl spacer chains. The Tergitol/IL systems with lower critical micellar concentration values will result in higher cloud point values, due to the greater colloidal dispersion stability. |
publisher |
SPRINGER |
issn |
0022-2461 |
isbn |
1573-4803 |
year published |
2021 |
volume |
56 |
issue |
21 |
beginning page |
12171 |
ending page |
12182 |
digital object identifier (doi) |
10.1007/s10853-021-06055-1 |
web of science category |
12 |
subject category |
Materials Science, Multidisciplinary |
unique article identifier |
WOS:000640466300001
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
3.553 |
5 year journal impact factor |
3.282 |
category normalized journal impact factor percentile |
65.764 |
dimensions (citation analysis):
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altmetrics (social interaction):
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