Philippine E-Journals

Polymer-Based Graphene Nanocomposite Coating with Anticorrosion and Anti-Barnacle Properties

Normie Jean Sajor | Jonathan Briones | Juanito Raphael Foronda | Klaud Jenssen Haygood | Gil Nonato C. Santos

 

Abstract:

We investigated the anticorrosive, hydrophobic and anti-barnacle properties of polyaniline and graphene (PANI/G) nanocomposite filler in the coating matrix applied to ship hulls. Various formulations of graphene were integrated to polyaniline matrix through in situ polymerization. It was observed that the 0.5%, 1.0%, and 2.5% by weight graphene formulation performed better than the counterparts with higher amount of graphene content as barrier protection. The various coating formulations were applied directly to the metal coupons. It was also observed that the PANI/G nanocomposite exhibited a hydrophilic property. The addition of polysiloxane to the mixture resulted in a hydrophobic surface with a contact angle of 108 degrees. Results show the absence of barnacle growth on metal samples coated with PANI/G/polysiloxane formulation. It is proposed that this anti-barnacle property is due to the hydrophobicity of the surface.