Trisiloxanes_Part1.pdf (529.3 kB)
Equilibrium and dynamic surface properties of trisiloxane aqueous solutions. Part 1. Experimental results
journal contribution
posted on 2010-09-07, 11:41 authored by Hernan Ritacco, Francisco Ortega, Ramon Rubio, Natalia A. Ivanova, Victor StarovTensiometry, ellipsometry and Brewster angle microscopy were used to measure equilibrium and dynamic surface tension, as well as surface adsorption, of aqueous solutions of trisiloxane surfactants. Complex adsorption curves, including inflection points, have been found for the surfactants with long
etoxylated chains. Surface aggregates at the liquid–air interfaces have been detected for the trisiloxanes that show superspreading behaviour onto moderately hydrophobic surfaces, while no aggregates were detected for the shorter trisiloxanes. The latter suggests that those surface aggregates may act as reservoirs of surfactant molecules to maintain the required surface tension in the course of spreading.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Citation
RITACCO, H.A. ... et al, 2010. Equilibrium and dynamic surface properties of trisiloxane aqueous solutions. Part 1. Experimental results. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 365 (1-3), 199-203.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publication date
2010ISSN
0927-7757Publisher version
Language
- en