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Evaluating the odour properties of refreshed recycled plastics

This study compares malodour in refreshed recycled plastics with virgin materials and attempts to evaluate the refreshment process for recyclates. Broad agreement with previous analytical tests was found by human panels for evaluating the odor of recycled and virgin plastics. Very long refreshment times are necessary to render recycled plastics effectively odourless, although significant odour reduction is achievable in 3-7 hours of refreshment.


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