Current Science

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Attractively printed plastic banners indicating the dates and venues of conferences, public events, etc. are ubiquitous. Such banners are commonly made of poly(vinyl chloride) (PVC), but acrylic and polypropylene are also used for some applications. After the event is over, the banners are discarded, either ending up in landfills, or being burnt. Both methods of disposal are undesirable, the former because the plastic may not degrade for years, and the latter because toxic gases may be released.
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