Investigation on Physicomechanical, Thermal, and Morphological of Dipodal Silane-Modified Walnut Shell Powder-Filled Polyurethane Green Composites and Their Application for Removal of Heavy Metal Ions from Water

Abstract

ABSTRACT Dipodal silane-modified walnut shell powder polyurethane green composites have been prepared with different weight fractions of walnut shell powder viz., 0, 3, 6, and 10 wt% with surface-modified dipodal silane. The properties of dipodal silane-modified walnut shell powder-filled polyurethane green composites was investigated by tensile testing, Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy. The polyurethane/dipodal silane-modified walnut shell powder has been fabricated based on 3-aminopropyltriethoxysilane and γ-glycidoxypropyl trimethoxysilane. The green composites were analyzed by ultraviolet–visible in two different water solutions with Ni2+ and Pd2+ ions concentrations. GRAPHICAL ABSTRACT