PVDF based polymer nanocomposite coatings for large area applications

摘要

We demonstrate a technique to blend Polyvinylidine fluoride (PVDF) and ethyl-2-cyanoacrylates (ECA, the main ingredient of 'superglue') in solution to enhance PVDF coating adhesion. ECA monomer was control-polymerized by using a co-solvent before blending. A number of micro- and nano-fillers were dispersed in the polymer solutions to fabricate coatings with strong substrate adhesion and tunable surface hydrophobicity using spray atomization. The influence of filler size, shape and concentration on composite hydrophobicity and microstructure was studied. The wettability of the composites was quantified by measuring static contact angles of water and water/isopropanol mixture droplets. Composite surface wettability ranged from partially hydrophilic to superhydrophobic depending on filler particle size, shape and concentration, while maintaining good substrate adhesion.