Thermoplastic Interpenetrating Polymer Networks Based on Polyvinyl Chloride and Polyurethane Ionomers for Damping Application

Abstract

Abstract Thermoplastic interpenetrating polymer networks (TIPNs) based on polyvinyl chloride (PVC) and polyurethane ionomers (PUI) in different weight ratios of 15/85, 25/75, 50/50, 75/25, and 85/15 PVC/PUI were prepared by sequential polymerization technique. IPN composition of 85/15 PVC/PUI was selected for filler addition based on thermal and mechanical data. These composite films containing calcinated clay filler (CCF) in a different weight percentage from 0.5 to 15 wt % were prepared. Characterization of thermoplastic IPNs (TIPN) and filled IPNs (TIPN-F) were carried out using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), stress-strain properties, and hardness were studied. The PVC/PUI: 85/15 based TIPN and TIPN-F5 show tough films, better miscibility, and thermal stability. Keywords: Cross-linkingIonomersMechanical propertiesPolyurethanesThermoplastic