Preparation and Characterization of Some Magnetic Nanocomposites of Biodegradable Polyurethane Based on (s)-histidine

Abstract

Recycling the polymeric materials into the cycle of nature is one of the concerns of scientists; this has been possible through using natural or synthetic polymers. In this study, new polyurethanes containing optically active monomers and ester linkages were developed by prepolymer method. Nano zero valent iron (ZVI) particles that were synthesized by co-precipitation method, were well dispersed in the polymeric matrix with different percentage amounts in the presence of the ionic liquid via in-situ polymerization technique. The accuracy of monomer synthesis, all prepolymers and polyurethanes was confirmed by typical spectroscopy techniques of FTIR, 1 HNMR, and CHN-O elemental analysis. To study the quality of ZVI and nanocomposites, nanoparticles (NPs) distribution instrument of X-ray (XRD), and scanning electron microscopy (SEM) were used. Properties such as thermal stability and thermal behavior and magnetic field were examined respectively by TGA, DTG, DSC and VSM techniques. Hydrolytic and enzymatic degradation of polyurethane composites with different weight percentages of Fe 3 O 4 were studied.