Hydrophilic-oleophobic coatings on cellulosic materials by plasma assisted polymerization in liquid phase and fluorosurfactant complexation

Materials with hydrophilic-oleophobic properties are of relevance due to their application to different fields such as self-cleaning coatings, liquid-liquid separation membranes and functional textiles for different technical applications. In this work, hydrophilic-oleophobic coatings have been deposited on cellulosic materials (filter paper and bleached cotton) by means of plasma assisted polymerization of acrylic acid solutions in water followed by cationic fluorosurfactant complexation. Chemical composition of the coatings on cellulosic materials was characterized by means of FTIR-ATR and XPS whereas their morphology was studied by SEM. Hydrophilic-oleophobic behavior was characterized by means of contact angle and wetting time. Additionally wetting properties of cationic, anionic and non-ionic surfactant solutions on the hydrophilic-oleophobic coatings were used to characterize the polyelectrolyte electrostatic forces upon the functionalized layer.