Abstract
In this study, the effect of (methacryloxymethyl)methyldimethoxysilane (MM‐MDMS) concentration on the mechanical, thermal, thermomechanical, rheological, morphological, gel content, cross‐linking density, and compression set properties of dynamically vulcanized ethylene propylene diene monomer (EPDM)/polypropylene (PP) (60/40, w/w) based thermoplastic vulcanizates (TPVs) was carried out. MM‐MDMS induces the physical cross‐linking and grafting as well as enhances chemical cross‐linking between PP and EPDM. This results increment in the values of cross‐linking density, gel content, tensile strength, Young's modulus, elongation at break, and viscosity. In contrast, the values of compression set, melting temperature, enthalpy of melting, crystallinity, and damping factor were observed to decrease with increased addition of MM‐MDMS in the EPDM/PP based TPV. This has been supported by Fourier transform infrared spectroscopy spectra and thermomechanical analysis. Scanning electron microscopy analysis confirmed the increase in compatibility between EPDM and PP on addition of MM‐MDMS. J. VINYL ADDIT. TECHNOL., 24:304–313, 2018. © 2017 Society of Plastics Engineers
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