Antibiofilm Effects of Modifying Polyvinylidene Fluoride Membranes with Polyethylenimine, Poly(acrylic acid) and Graphene Oxide

• DOI: 10.3390/polym16233418
• Publication Date: 2024-12-05T11:24:44Z
• Authors: Mario Castillo-Ruiz; Constanza Negrete; Juan Pablo Espinoza; Iván Martínez; Leslie K. Daille; Christopher González; Bárbara Rodríguez
• Keywords: Polyvinylidene fluoride; Polyethylenimine; Acrylic acid

Biofouling in membrane filtration systems poses significant operational challenges, leading to decreased permeate flux. The aim of this work was study the anti-biofilm properties new nanofiltration membranes produced via layer-by-layer, LBL, assembly by coating a polyvinylidene fluoride (PVDF) support with polyethylenimine (PEI) and poly(acrylic acid)/graphene oxide (PAA-GO) mixture. were characterized according contact angle, scanning electron microscopy (SEM), atomic force their Z-potential. Biofilm quantification characterization carried out using crystal violet staining SEM, while bacterial viability assessed colony-forming units. three bilayers ((PAA-PEI)