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Polymer-surfactant and protein-surfactant interactions
1Dipartimento di Chimica, Università degli Studi "La Sapienza," Rome, Italy. camillo.lamesa@uniroma1.it
Journal of Colloid and Interface Science
|April 26, 2005
Summary
Mixing polymers with surfactants creates diverse phases like gels and liquid crystals, driven by molecular interactions. These complex systems offer potential applications in drug delivery and material science.
Area of Science:
- Physical Chemistry
- Materials Science
- Polymer Science
Background:
- Polymers and surfactants self-assemble into complex phases.
- Understanding these interactions is key for material design.
Purpose of the Study:
- To discuss the phase behavior of polymers and proteins with surfactants.
- To explore the factors controlling these complex systems.
Main Methods:
- Phase diagrams
- Surface adsorption
- Thermodynamic methods
- Conductivity
- QELS
- Viscosity
- Microscopy (Optical, Cryo-TEM, AFM)
- NMR
- Fluorescence
- Relaxation methods
Main Results:
- Formation of organized phases including molecular solutions, complexes, gels, and liquid crystals.
- Phase behavior is governed by polymer/surfactant content, temperature, pH, and ionic strength.
- Rich polymorphism arises from electrostatic, excluded volume, and van der Waals forces.
Conclusions:
- Polymer-surfactant interactions (PSI) lead to diverse phase behaviors.
- System properties are tunable by controlling composition and environmental factors.
- Potential applications include gelation, surface coating, dielectric layers, and drug delivery.