Preparation of Polyurethane Composites with Activated Carbon Black as the Reinforcing Filler
Abstract
The effect of activated carbon black (ACB) on the mechanical properties of palm-based polyurethane composites was studied. Palm-based multi-block polyurethane (PU) was prepared by reacting palm kernel oil-based (PKO-p) monoester with 4,4-diphenyl methane diisocyanate (MDI) through prepolymerization method. Poly(ethylene glycol) (PEG) was used as the chain extender while acetone was used as the solvent to control the reaction kinetics. The amount of ACB added into the PU system was varied at 0 to 8 wt% (percentage by weight). This study aimed to develop a formulation of PU-ACB composite film with excellent mechanical properties. The mechanical characterizations included tensile test, hardness test, and scratch resistance test. Fourier Transform Spectroscopy (FTIR) analysis was also conducted to identify the functional groups present in the PU composites. The incorporation of ACB as filler greatly enhanced the mechanical properties of the PU composites due to compatibility and interfacial adhesion of ACB with PU matrix. The loading of ACB at 8 wt% exhibited the optimum mechanical properties.
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