Deposition of Synthetic and Bio-Based Polycations onto Negatively Charged Solid Surfaces: Effect of the Polymer Cationicity, Ionic Strength, and the Addition of an Anionic Surfactant

Colloids and Interfaces

María Hernández-Rivas¹  Eduardo Guzmán¹  Laura Fernández-Peña¹  Francisco Ortega¹  RamónG. Rubio¹  Andrew Akanno¹  Andrew Greaves²  GustavoS. Luengo²  Fabien Léonforte² 

[1] Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain;L’Oréal Research and Innovation, 93600 Aulnay-Sous-Bois, France;

关键词: chitosan;    adsorption;    ionic strength;    solid surfaces;    surfactants;    polyelectrolytes;   

DOI  :  10.3390/colloids4030033

来源: DOAJ

【 摘 要 】

The deposition of layers of different polycations (synthetic or derived from natural, renewable resources) onto oppositely charged surfaces has been studied using ellipsometry and quartz crystal microbalance with dissipation monitoring (QCM-D). Information about the thickness of the deposited layers and their water content was ascertained. The adsorption of the different polycations onto negatively charged surfaces was found to be a complex process, which is influenced by the chemical nature of the polymer chains, ionic strength, polymer concentration and the addition of additives such as surfactants. The experimental picture shows a good agreement with theoretical calculations performed using the Self-Consistent Mean Field (SCF) approach. The results show that the electrostatically-driven deposition can be tuned by modifying the physico-chemical properties of the solutions and the chemical nature of the adsorbed polymer. This versatile approach is a big step forward in aiding the design of new polymers for many industrial applications and, in particular, the design of sustainable washing formulations for cosmetic applications.

【 授权许可】

Unknown