Study of the Liquid/Vapor Interfacial Properties of Concentrated Polyelectrolyte–Surfactant Mixtures Using Surface Tensiometry and Neutron Reflectometry: Equilibrium, Adsorption Kinetics, and Dilational Rheology

2018 ◽  
Vol 122 (8) ◽  
pp. 4419-4427 ◽  
Author(s):  
Sara Llamas ◽  
Eduardo Guzmán ◽  
Andrew Akanno ◽  
Laura Fernández-Peña ◽  
Francisco Ortega ◽  
...  
Keyword(s):  
Adsorption Kinetics ◽  
Interfacial Properties ◽  
Neutron Reflectometry ◽  
Equilibrium Adsorption ◽  
Surfactant Mixtures ◽  
Surface Tensiometry ◽  
Dilational Rheology ◽  
Liquid Vapor

Towards understanding the behavior of polyelectrolyte–surfactant mixtures at the water/vapor interface closer to technologically-relevant conditions

2018 ◽  
Vol 20 (3) ◽  
pp. 1395-1407 ◽  
Author(s):  
Sara Llamas ◽  
Laura Fernández-Peña ◽  
Andrew Akanno ◽  
Eduardo Guzmán ◽  
Víctor Ortega ◽  
...  
Keyword(s):  
Water Vapor ◽  
Neutron Reflectometry ◽  
Fluid Interfaces ◽  
Surfactant Mixtures ◽  
Vapor Interface ◽  
Surface Tensiometry

The adsorption of technologically relevant polyelectrolyte–surfactant mixtures at fluid interfaces was studied by neutron reflectometry and surface tensiometry.

scholarly journals Surfactant-Like Behavior for the Adsorption of Mixtures of a Polycation and Two Different Zwitterionic Surfactants at the Water/Vapor Interface

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3442 ◽  
Author(s):  
Andrew Akanno ◽  
Eduardo Guzmán ◽  
Laura Fernández-Peña ◽  
Francisco Ortega ◽  
Ramón G. Rubio
Keyword(s):  
Interfacial Properties ◽  
Zwitterionic Surfactant ◽  
Fluid Interface ◽  
Surfactant Mixtures ◽  
Zwitterionic Surfactants ◽  
Dimethylammonium Chloride ◽  
Polymer Surfactant ◽  
Charged Group ◽  
Positively Charged ◽  
Dilational Rheology

The bulk and interfacial properties of solutions formed by a polycation (i.e., poly(diallyl-dimethylammonium chloride), PDADMAC) and two different zwitterionic surfactants (i.e., coco-betaine (CB) and cocoamidopropyl-betaine (CAPB)) have been studied. The bulk aggregation of the polyelectrolyte and the two surfactants was analyzed by turbidity and electrophoretic mobility measurements, and the adsorption of the solutions at the fluid interface was studied by surface tension and interfacial dilational rheology measurements. Evidence of polymer–surfactant complex formation in bulk was only found when the number of surfactant molecules was closer to the number of charged monomers in solutions, which suggests that the electrostatic repulsion associated with the presence of a positively charged group in the surfactant hinders the association between PDADMAC and the zwitterionic surfactant for concentrations in which there are no micelles in solution. This lack of interaction in bulk is reflected in the absence of an influence of the polyelectrolyte in the interfacial properties of the mixtures, with the behavior being controlled by the presence of surfactant. This work has evidenced the significant importance of the different interactions involved in the system for controlling the interaction and complexation mechanisms of in polyelectrolyte–surfactant mixtures.

Adsorption Kinetics and Rheological Interfacial Properties of Plant Proteins at the Oil−Water Interface

2004 ◽  
Vol 5 (6) ◽  
pp. 2088-2093 ◽  
Author(s):  
V. Ducel ◽  
J. Richard ◽  
Y. Popineau ◽  
F. Boury
Keyword(s):  
Adsorption Kinetics ◽  
Interfacial Properties ◽  
Water Interface ◽  
Plant Proteins ◽  
Oil Water

Responsive Material and Interfacial Properties through Remote Control of Polyelectrolyte–Surfactant Mixtures

2022 ◽  
Author(s):  
Marco Schnurbus ◽  
Michael Hardt ◽  
Pascal Steinforth ◽  
Javier Carrascosa-Tejedor ◽  
Samuel Winnall ◽  
...  
Keyword(s):  
Remote Control ◽  
Interfacial Properties ◽  
Surfactant Mixtures
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