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Surfaces with antibacterial and antistatic functionalities are one of the new demands of todays' industry. Therefore, a facile method for the preparation of multifunctional polyaniline/copper/TiO2 (PANI/Cu/TiO2) ternary nanocomposite based on in situ polymerization is presented. This nanocomposite was characterized through the different techniques and was utilized for induction of antibacterial and antistatic properties in polyurethane coatings. Measurement of the conductivity of PANI/Cu/TiO2 ternary nanocomposite indicated higher electrical conductivity of this nanocomposite compared to pure PANI. The antibacterial activity of the modified polyurethane coatings was tested against Gram‐positive and Gram‐negative bacteria which led to remarkable reduction in bacterial growth. Besides, it was observed that polyurethane coating with 2 wt % content of ternary nanocomposite has a surface electrical resistance equal 4 × 108 Ω/sq which acquires surface electrical resistance of standard antistatic coatings. The final coatings were also characterized in terms of thermal and mechanical properties to investigate the effect of the ternary nanocomposite on improvement of these properties. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48825. [ABSTRACT FROM AUTHOR]

Abstract: In this study, a facile method for the production of Antibacterial and Antistatic polyurethane coatings was investigated using copper modified ZnO nanoparticles-polyaniline nanofibers (PANI-CuZnO) ternary nanocomposite. PANI-CuZnO ternary nanocomposite was synthesized through two steps. First, copper-modified ZnO nanoparticles were produced through the hydrolysis method using acetate precursors, and then they were mixed with polyaniline nanofibers, which were synthesized by seeding method. The obtained nanocomposite was characterized by FTIR, XRD, and FESEM techniques. Results of evaluating the antibacterial action of the polyurethane coatings with the content of ternary nanocomposite showed that the obtained coatings have a proper antibacterial action against Gram-positive and Gram-negative bacteria. In addition, measuring the coatings' surface electrical resistance revealed that addition of the ternary nanocomposite to the polyurethane coatings' matrix causes the surface electrical resistance of the coatings significantly decreases and reaches 8 × 107 Ω/sq. Thereby, they could be categorized as an antistatic coating. Moreover, the addition of PANI-CuZnO enhanced adhesion strength and scratch resistance of the final polyurethane coatings.Graphical abstract: [ABSTRACT FROM AUTHOR]

Nowadays, nanocomposite coatings have gained much attention from both academic and industrial aspects mainly because of the outstanding properties which they can offer simultaneously. Specifically, anti-corrosion properties can make them one of the best choices to solve destructive corrosion problems. Nickel oxide (NiO) nanoparticles have been synthesized to create these outstanding properties in vegetable oil-based polyurethane coatings. To this end, epoxidized soyabean oil was utilized to synthesize polyol and produce polyurethane coatings, and NiO nanoparticles were incorporated into the obtained coatings. The obtained coatings were evaluated through the FTIR, H NMR, and FESEM techniques and their performance in terms of water uptake, anticorrosion and antibacterial properties were investigated. The obtained results clearly showed that the presence of NiO nanoparticles has had an undeniable effect on the performance of the coating in protecting mild steel substrate against corrosion. Moreover, using these nanoparticles has created remarkable antibacterial properties in the coating besides improved mechanical performance compared to pure polyurethane coating. [Display omitted] • Flower-like Nickel Oxide (NiO) as a multifunctional nanoparticle was developed by a facile hydrothermal technique. • Using the epoxidized soybean oil as a renewable resource to synthesize polyol and polyurethane resin efficiently. • The NiO multifunctional nanoparticle induced anticorrosion properties in polyurethane-based coatings. • PU-based coatings containing flower-like Nickel Oxide nanoparticles could inhibit bacteria growth. • The mechanical properties of polyurethane-based coatings could be improved by adding NiO multifunctional nanoparticles. [ABSTRACT FROM AUTHOR]