Magnetic microspheres composite from poly(ethylene terephthalate) (PET) waste: Synthesis and characterization

Polyolefins and Polyethylene Terephthalate Package Wastes: Recycling and Use in Composites

“…These processes result in monomers and other low molecular weight oligomers usually in the form of a liquid oil and syngas, which is a mixture consisting of carbon monoxide, carbon dioxide, and hydrogen [48,98,105]. These molecules can be used as feedstock for the production of new polymers and composites [106], valuable chemicals, or fuel [40], and hence contribute towards a circular plastic economy. Chemical recycling of plastic waste has numerous advantages compared to mechanical recycling: higher tolerance to waste contamination, avoidance of recyclate performance losses, and formation of products with economic value, and sortation is not always required; for example, in gasification, all MSW can be treated together without prior sortation [47,98,107,108].…”

“…The three major chemical routes for depolymerisation are glycolysis [264][265][266][267][268][269], methanolysis [270][271][272][273][274], and hydrolysis [270,[274][275][276][277][278][279][280][281], summarised in Figure 15. For glycolysis and hydrolysis transformations, researchers focussed on the selection of catalysts, which could offer a high yield, short process time, and more environmental friendliness [106,249,282,283]. Thus, for glycolysis, Chiaie et al [249] underlined the importance of tuning the strength of Lewis acid-base catalysts.…”

“…The different products of chemically recycled PET can be used to produce new materials. For example, Viante et al [106] developed magnetic microsphere composites from magnetic nanoparticles and BHET produced by glycolysis and modified by glycidyl methacrylate (GMA). Two other chemical treatments were reported: ammonolysis and aminolysis [249][250][251][282][283][284][285][286].…”

Chemical recycling ofPET: A stepping‐stone toward sustainability

“…PET is reported to have been used to make fibers, sheets, and films, and, more specifically, it is used in food and beverage packaging, electronics and communication devices, automotive parts, houseware, lighting products, power tools, sports goods, photographic applications, X‐ray sheets, and textiles, healthcare applications, construction, etc 7–11 …”

“…PET is reported to have been used to make fibers, sheets, and films, and, more specifically, it is used in food and beverage packaging, electronics and communication devices, automotive parts, houseware, lighting products, power tools, sports goods, photographic applications, X-ray sheets, and textiles, healthcare applications, construction, etc. [7][8][9][10][11] Therefore, according to space constraints in the landfill and varied environmental concerns associated with its accumulation, imposed environmental regulation by governments, the scarcity and rising cost of fossil feedstock, and poor biodegradability, recycling of PET is inevitable.…”