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- W2996375023 abstract "Polyethylene as a polymeric precursor for carbon fibre production has attracted much attention over recent years. Not only is it a low-cost commodity polymer, it has a higher theoretical carbon yield (at 100%) than polyacrylonitrile (at 67%) and is very readily melt processed into fibres. The challenge is to efficiently dehydrogenate and graphitize polyethylene fibres. This paper explores the use of bromine as a novel oxidant to functionalise polyethylene prior to carbonisation, leading to efficient cyclisation and carbonisation on heating. Through a process of low-temperature photo-induced liquid-phase bromination followed by dehydrobromination at moderate temperature and subsequent carbonisation to 800 °C, a carbonaceous product was obtained in high carbon yield (>90%). The effects of a range of process conditions, as well as the use of different types of polyethylene and polyethylene blends, were explored." @default.
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- W2996375023 date "2020-02-01" @default.
- W2996375023 modified "2023-10-18" @default.
- W2996375023 title "Pyrolysis of brominated polyethylene as an alternative carbon fibre precursor" @default.
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- W2996375023 doi "https://doi.org/10.1016/j.polymdegradstab.2019.109057" @default.
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