New method of recycling colored plastics offers possible solution to 'huge environmental challenge'
oved by reprocessing; reprocessed plastic retains color from the original material.
We have prepared single-component, coloured polymers by adding chromophore monomers to epoxide-anhydride ring-opening copolymerization reactions; chromophores need only be added at dopant levels to give highly coloured materials with little change in properties from the base polymer. We have depolymerized the polymers to the parent acid/alcohol and have remade colourless polymer from reformed epoxide and anhydride.
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