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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Recycling of Commodity Plastics into Recyclable Thermosets Using Covalent Adaptable Networks / Återvinning av vanliga termoplaster till återvinningsbara härdplaster med hjälp av kovalenta anpassningsbara nätverk

Tipnis, Atharv January 2024 (has links)
Syftet med projektet var att samla in återvunnen polyeten och omvandla den till återvinningsbara högstyrke-härdplaster genom att designa ett kovalent anpassningsbart nätverk för det. Återvunnen polyeten samlades in och ympades med maleinsyraanhydrid genom reaktiv extrudering och en friradikalmekanism, vilket sedan tvärbands med laboratoriesyntetiserad polyimid. Den resulterande tvärbundna blandningen bearbetades genom formsprutning, och tester visade att den förväntade reaktionen hade utförts framgångsrikt och de mekaniska egenskaperna förbättrades avsevärt. Materialet bearbetades också om för att testa dess återvinningsbarhet och denna process samt analysen av materialet efteråt visade också lovande resultat. / The aim of the project was to collect recycled polyethylene and transform it into recyclable high-strength thermosets by designing a covalent adaptable network. Recycled polyethylene was collected and grafted with maleic anhydride through reactive extrusion and free radical mechanism, which was then cross-linked with laboratory synthesized polyimide. The resulting cross-linked blend was processed using injection molding, and testing showed that the expected reaction had been carried out successfully and mechanical properties were significantly enhanced. The material was also reprocessed to test its recyclability and this process and analysis of material after it showed promising results as well.

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