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O: Fachverband Oberflächenphysik
O 42: Poster Tuesday: Organic Molecules on Inorganic Surfaces
O 42.11: Poster
Dienstag, 2. April 2019, 18:00–20:00, Poster D
Rubber-modified polybenzoxazine-based materials for surface coating applications — •Eugene B. Caldona1, Al Christopher C. De Leon2, Bryan B. Pajarito3, and Rigoberto C. Advincula2 — 1Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA — 2Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA — 3Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
This work demonstrates the preparation of rubber-modified polybenzoxazine (PBZ) where additives such as graphene oxide (GO), polyaniline (PANI), and nano-silica (SiO2) are added separately and the resulting materials are used as surface coatings. PBZ is known for its near-zero shrinkage upon polymerization, chemical resistance, and good dielectric, thermal, and mechanical properties. PBZ has low surface free energy and low water absorption making it an excellent candidate for protective coating study. GO is added because of its ability to form a tortuous path leading to reduced permeability and enhanced barrier property. PANI, a conducting polymer, promotes passivation by forming a thin layer of metal oxides that further increase the anodic protection of the coating. Lastly, on top of providing superior corrosion protection, nano-SiO2 introduces surface roughness that results in excellent anti-wettability, anti-icing, self-cleaning property, and superoleophilicity. Combined with good thermal and adhesion properties, the rubber-modified PBZ with different additives are said to be very promising surface coating materials for a variety of applications.