Determinação do ponto de névoa em surfactantes não iônicos por espectroscopia de impedância elétrica
In this paper, we analyze the use of electrical impedance spectroscopy applied to determination of cloud point. The slope of admittance measured at 100 kHz is reduced to temperature above the critical value which characterizes the phase transition, in a strong indication that this process is activated during the clouding. Additionally to this study we explored the influence of parameters such as additives and temperature on the performance of phase separation of residues (silver nanoparticles) by cloud point extraction. The interaction with salt maximizes the separation of chemical residues in a progressively reduced temperature.
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Digital revista |
| Language: | Portuguese |
| Published: |
Sociedade Brasileira de Química
2010
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000900020 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|