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Preparation and characterization of recycled blends using poly (vinyl chloride) and poly(methyl methacrylate) recovered from waste electrical and electronic equipments

Suresh, Sunil S., Mohanty, Smita, Nayak, Sanjay K.
Journal of cleaner production 2017 v.149 pp. 863-873
computers, differential scanning calorimetry, electronic wastes, liquid crystal display, plastics, poly(vinyl chloride), polymethylmethacrylate, recycled materials, recycling, scanning electron microscopy, thermal degradation, thermal stability, thermogravimetry, vinyl chloride
The current investigation deals with the effective utilization of plastics generated from electronic waste. In this study two different polymers: Poly (vinyl chloride) (PVC) collected from the data cables and Poly(methyl methacrylate) (PMMA) recovered from the liquid crystal display (LCD) panels used in computers were used to prepare the PVC/PMMA recycled blends using mechanical recycling technique at different compositions. The blends were characterized for various physico-mechanical, thermal, processability and morphological studies. Higher impact strength and elongation at break was observed for recycled blend with higher weight percentage of recycled PVC. The blend prepared at 70:30 wt ratio of recycled PVC (r-PVC): recycled PMMA (r-PMMA) in recycled blend exhibited better impact strength and elongation at break than the other blends. The thermal degradation of the recycled blend investigated using thermogravimetric analysis (TGA) suggested enhanced thermal stability of recycled blend than its individual recycled materials. The miscibility characteristics of the blends have been studied employing differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). Both results show partial miscibility of r-PVC and r-PMMA in the recycled blend.