Mona Y. Elnaggar

Investigation of physico-mechanical properties of flexible poly (vinyl chloride) filled with antimony trioxide using ionizing radiation

ABSTRACT Composites of polyvinyl chloride (PVC) with 2% calcium carbonate, 2% diethyl phthalate, 2% paraffin wax and 2% lead sulphate and different contents of antimony trioxide (Sb2O3) prepared by melting and irradiated with gamma ray have been considered. Assessment of the mechanical and thermal properties of the unirradiated and irradiated flexible polyvinyl chloride (FPVC) were completed utilizing elasticity (TS), Elongation at break (Eb) and thermogravimetric analysis measurements. TS and thermal stability of FPVC displayed advanced improvement after addition of additives and this approach highlighted the efficiency of those ingredients on PVC. The compounding of FPVC with Sb2O3 in various extents was examined by FTIR, X-ray diffraction and scanning electron microscope methods. It is obvious that the presence of Sb2O3 begins impacting oxidative degradation, leading to a decrease in mechanical properties up to 10%. Moreover, a slight increase in the thermal stability of composites by exposure to ionizing radiation is apparently due to cross-linking of FPVC chains. GRAPHICAL ABSTRACT

Effect of carbon fiber and gamma irradiation on acrylonitrile butadiene styrene/high density polyethylene composites

In this study, the effect of carbon fiber and gamma irradiation on acrylonitrile butadiene styrene (ABS)/high density polyethylene matrix was investigated. The ternary composites with short carbon fiber of concentrations 15, 30, and 45 wt % were irradiated with doses of 100 and 300 kGy. In order to characterize the physical and morphological properties of all reinforced composites, wide X-ray diffraction, differential scanning calorimetry, thermo gravimetric analysis, and scanning electron microscopy were performed.