When I was at Macdermid ome of the things I was asked to look at was biodegradeable plastics. Tha was one of the easier subjecs to cover. hey rapidly disintergate from long chains to short chians via biodegradble links - but I sai dthat was a non starter becuase it would lead to more microplasitcs which were worse then larg relavitly inert lumps od plastic. Its a big deal.Plastic should burn down to not very my=uch and can be thermally reduced to carbon, solving a lot of problems. I prefert eh thermal reduction process as it wil probably be complete and shoul result in carbon, whcih as coal graphite and diamond prove can be safely buried as waste.

I think, cooking food in microwave oven in plastic containers is most common and hazardous.

Thanks for Sharing. :)