WPU/CB/GO nanocomposites: in situ polymerization preparation, thermal, and anticorrosion performance evaluation

Abstract

In this paper, composite fillers including graphene oxide and carbon black had been applied to modify pure waterborne polyurethane (WPU) and a new nanocomposite was prepared by in situ polymerization, whose structure was characterized by Fourier transform infrared spectroscopy that demonstrated interfacial interactions existing between the filler particles and the hard segments of WPU chains. Meanwhile, thermal properties of prepared nanocomposites were enhanced after adding composite fillers as shown in the results of thermogravimetric analysis and differential scanning calorimetry curves, which could be explained by several factors including strong interface interaction between organic phase and inorganic phase verified by infrared spectra and scanning electron microscopy as well as transmission electron microscopy, good dispersion and barrier effect of the composite fillers, reinforced crosslinking density of the system. Additionally, the contact angle and anticorrosion performance of the nanocomposite films were heightened after adding fillers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48716.

Synthesis of Organic–Inorganic Nanohybrids-Based Polymeric Nanocomposites

“…Hou and colleagues reported the preparation of nanocomposites based on waterborne polyurethane (WPU) as a polymer matrix and combination of graphene oxide (GO) and carbon black (CB) as nanomaterials [36]. First of all, the mixture of monomer (isophorone diisocyanate) and polypropylene glycol was stirred in a container at 85 °C for 3 h. Then, mixture of NMP/DMPA along with the few drops of dibutyltin dilaurate was incorporated into the system under stirring for 2 h, to obtain NCO-terminated prepolymer.…”

Improvement of Mechanical Properties and Solvent Resistance of Polyurethane Coating by Chemical Grafting of Graphene Oxide

“…The physical blending [ 33 ] of GO or modified GO with dopamine and with WPU [ 34 ] can improve the mechanical properties and barrier properties of the coating [ 35 , 36 ]. However, physical blending will result in poor compatibility and dispersion of GO and WPU, and the modification ability of GO cannot be effectively exerted, which will easily cause stress concentration and get the opposite effect.…”

Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion

“…Yeh et al developed a WPU/Na+ -montmorillonite (Na+ -MMT) clay nanocomposite coating for practical evaluation of corrosion protection efficiency [ 9 ]. In 2019, Hou et al reported WPU nanocomposites with complex packing of GO and CB as anti-corrosive coating [ 10 ]. Liu et al proposed WPU nanocomposites with polyether-amine functionalized graphene oxide for anti-corrosion [ 11 ].…”