Synthesis, Characterization, Application of PET Waste Blended with Hybrid Fibers and Preparation of Fiber Derived Unsaturated Resin

In this study, polyethylene terephthalate samples were blended with hybrid fibers such as chinlon, polypropylene and polyurethane and subjected to glycolysis to obtain fiber derived polyester polyol precursor. Consequently, the polyester precursor was reacted with maleic anhydride to prepare a fiber derived unsaturated resin. The effect of reaction conditions, type of hybrid fibers and their contents on the structure of the polyester polyol precursors were investigated by Fourier transform infrared spectra, hydrogen nuclear magnetic spectra, gel permeation chromatography, high performance liquid chromatography, liquid mass spectrometry and thermogravimetric analysis. The polyester polyol precursors were further used to synthesize fiber derived unsaturated resins with proper viscosity and acid value. Finally, cured resins with excellent thermal stability and mechanical performance for potential commercial application were obtained.