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- W4313680653 endingPage "111823" @default.
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- W4313680653 abstract "Because of its high crosslinking density, compact structure and stable performance, epoxy resin is difficult to be degraded, which leads to serious environmental pollution problems. In this work, using dipropylene glycol dimethyl ether as swelling agent and nitric acid as oxidant, the degradation of amine cured epoxy resin was studied. Results are as follows: The degradation rate obtained by swelling agent assisted oxidation degradation method is much higher than that obtained by oxidation degradation method only. And the degradation rate of the epoxy resin even reached 100 % at 100 °C only in an hour under the condition of swelling agent assisted nitric acid. FT-IR and GC–MS showed that the degradation was mainly caused by that the CN bond in the molecular chain was gradually weakened and fractured finally. The molecular weight of the degradation product was relatively dispersive, which was composed of low molecular polymer and small fragments, and the molecular weight of low molecular polymer was about 2167. And the degradation products primarily contain 4-isopropylphenol and (allyloxy)benzene rings. This work provides a new way to solve the problem about the degradation, recycling and pollution of epoxy resin." @default.
- W4313680653 created "2023-01-08" @default.
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- W4313680653 date "2023-03-01" @default.
- W4313680653 modified "2023-09-25" @default.
- W4313680653 title "Recycling of ammonia-cured epoxy resin by oxidative degradation of nitric acid assisted by swelling agent" @default.
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- W4313680653 doi "https://doi.org/10.1016/j.eurpolymj.2023.111823" @default.
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