Surface activation of crosslinked rubbers and ground tyre rubber via monomer grafting

摘要

Crosslinked rubbers and ground tyre rubber (S-GTR) have been treated using a surface grafting process allowing the incorporation of carboxyl and epoxy groups onto the polymer surface. The rubber were functionalised with glycidyl methacrylate (GMA) or methacrylic acid (MA) by photoinitiated grafting. The grafting degree of the rubber was determined by attenuated total reflectance Fourier-transform infrared (FTIR-ATR) spectroscopy. The grafted GTR can well be incorporated in various thermoplastics and thermosets. The surface grafting strongly enhances also the glueing ability of rubber sheets.