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Sustainable Waste Management of Engineering Plastics Generated from E-Waste: A Critical Evaluation of Mechanical, Thermal and Morphological Properties
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Journal Article
Sustainable Waste Management of Engineering Plastics Generated from E-Waste: A Critical Evaluation of Mechanical, Thermal and Morphological Properties
2021
Overview
The major roadblock for recycling of waste electrical and electronic equipments (WEEE) depends on the viability of sorting process, which is a complex task, involving various techniques such as sink float, froth flotation, optical separation and manual separation, etc. This makes the sorting process highly time consuming and expensive. The primary aim of this investigation is to study the properties of polymeric blends formulated from computer keyboards, by avoiding high end sorting procedure to avoid manpower and instrumental cost. The major polymers recovered from waste keyboards were identified as acrylonitrile butadiene styrene (ABS), high impact polystyrene (HIPS) and polystyrene (PS), using fourier transform infrared (FTIR) spectroscopy. These polymers were subjected to mechanical recycling by employing melt blending technique, followed by injection moulding. A ternary blend was prepared utilizing various percentages of ABS, HIPS and PS. The mechanical test of the blends revealed an optimum tensile strength of 35 ± 3 MPa, flexural strength of 65 ± 3 MPa, and impact strength of 45 ± 3 J/m. The homogeneity of the blends was determined through thermal analysis and morphological analysis of impact fractured specimens. The thermogravimetry analysis (TGA) showed a narrow peak with degradation of 98% of the blends at 700 °C. It was observed that, the properties of blends were similar to each other, which allows to eliminate multiple sorting process reducing cost aspect with improve performance characteristics.
Publisher
Springer Nature B.V
Subject
