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Cloud point transition in nonionic micellar solutions
Abstract
Aqueous micellar solutions of the polyoxyethylene nonionic amphiphiles C6E3, C8E4, C12E8, and C14E7 have been investigated as a function of temperature and concentration by static and dynamic light scattering, turbidimetry, and viscosimetry. Light-scattering measurements at the critical concentration for phase separation show that the osmotic compressibility and the correlation range of concentration fluctuations diverge as the critical point is approached in all the investigated systems. The results concerning short-chain amphiphiles (C6E3, C8E4) strongly suggest that the observed behavior is due to critical concentration fluctuations and that the phase transition is due to interactions among small globular micelles. The results concerning long-chain amphiphiles (C12E8, C14E7) indicate that, besides critical effects, there may be some micellar growth with temperature. It is suggested that this second effect, if existing, is connected to the presence of anisotropic-phase boundaries not too far from the critical concentration line. © 1984 American Chemical Society
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Citations
Cited by
Hinze, W. L., & Pramauro, E. (1993) · Critical Reviews in Analytical Chemistry · doi:10.1080/10408349308048821 · Cited by 668
The structure of micelles and microemulsions
Chevalier, Y., & Zemb, T. (1990) · Reports on Progress in Physics · doi:10.1088/0034-4885/53/3/002 · Cited by 431
Carabias-Martı́nez, R., Rodrı́guez-Gonzalo, E., Moreno-Cordero, B., Pérez-Pavón, J. L., Garcı́a-Pinto, C., & Fernández Laespada, E. (2000) · Journal of Chromatography A · doi:10.1016/s0021-9673(00)00837-2 · Cited by 392
Puvvada, S., & Blankschtein, D. (1990) · The Journal of Chemical Physics · doi:10.1063/1.457829 · Cited by 351
Micelle-mediated extraction as a tool for separation and preconcentration in metal analysis
Stalikas, C. D. (2002) · TrAC Trends in Analytical Chemistry · doi:10.1016/s0165-9936(02)00502-2 · Cited by 338
Metadata
- Authors
- Corti, M., Minero, C., & Degiorgio, V.
- Venue
- The Journal of Physical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1984-01
- Volume
- 88
- Issue
- 2
- Pages
- 309-317
- ISSN
- 0022-3654 (ISSN-L)
- 1541-5740
- OpenAlex
- W2001621244
- Cited by
- 348
- References
- 0
- FWCI
- 26.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Corti, M., Minero, C., & Degiorgio, V. (1984). Cloud point transition in nonionic micellar solutions. The Journal of Physical Chemistry. https://doi.org/10.1021/j150646a029
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