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{"id":69450,"date":"2023-12-22T13:31:44","date_gmt":"2023-12-22T13:31:44","guid":{"rendered":"https:\/\/www.lse.ac.uk\/granthaminstitute\/?post_type=publication&p=69450"},"modified":"2024-01-15T13:40:48","modified_gmt":"2024-01-15T13:40:48","slug":"recycling-of-enamelled-copper-wire-from-end-of-life-electric-motor-via-room-temperature-methanolysis","status":"publish","type":"publication","link":"https:\/\/www.lse.ac.uk\/granthaminstitute\/publication\/recycling-of-enamelled-copper-wire-from-end-of-life-electric-motor-via-room-temperature-methanolysis\/","title":{"rendered":"Recycling of enamelled copper wire from end-of-life electric motor via room temperature methanolysis"},"content":{"rendered":"\n

Polyester enamelled copper wire plays an important role in the manufacturing of electric motors. In line with the electrification of transport, the demand for electric motors and the future waste generated from their end-of-life cannot be ignored. The waste from the polyester enamelled copper wire is expected to increase steadily. Methods proposed by researchers are mainly focused on thermal treatment to either pyrolyse

In this manuscript, we propose two-stage processes comprised of methanol washing and room temperature methanolysis with dichloromethane as co-solvent and CO_{3<\/sub> as catalyst to delaminate multilayered type enamelled copper wire. The methanol washing recovers polyvinyl butyral as it is, via dissolution. Whereas the methanolysis products are dimethyl}terephthalate_{3<\/sub> to Cu wire ratio, of 500 g\/L, 1.00 mol\/mol, and 0.10 wt%, respectively, allow complete removal of polyester enamel in 24 h. The methanolysis parameters described manage to give a modest DMT and DMI yield of 86.0% and 92.2%, respectively. The reaction time can be sped up by increasing the temperature by 10 °C, leading to complete}depolymerisation

Samuel D. Widijatmoko, Zhehao (John) Cui, Hassan Agalit, Yongliang Li, Gary A. Leeke, Recycling of enamelled copper wire from end-of-life electric motor via room temperature methanolysis,
Resources, Environment and Sustainability<\/em>, Volume 15, 2024, 100143, ISSN 2666-9161,
https:\/\/doi.org\/10.1016\/j.resenv.2023.100143.<\/strong><\/p>\n\n","protected":false},"excerpt":{"rendered":"\n