مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

The effect of glycidyl methacrylate (GMA) on mechanical properties, morphology, and thermal degradation of recycled poly(vinylchloride)/acrylonitrile-butadiene rubber (PVCr/NBR) blends was studied. The blends were prepared at 150°C and rotor speed of 50 rpm in an internal mixer. The glycidyl methacrylate was added at 4 php of plastic. The PVCr/NBR (without GMA) blends were also prepared as control samples. It was found that the addition of GMA significantly improved the properties of PVCr/NBR blends. At a similar blend composition, the PVCr/NBR + GMA blends show higher stresses at peak and at 100% elongation (M100) but lower elongation-at-break than PVCr/NBR blends. The scanning electron microscopy (SEM) study of tensile fracture surfaces of the blends indicates that the presence of glycidyl methacrylate increased the interfacial interaction between recycled PVC and NBR phases and thus improved compatibility between PVCr and NBR phases. However, the thermal gravimetry analysis (TGA) of the blends show that the presence of GMA has reduced the thermal stability of PVCr/NBR blends.