今年2月底,国家发改委21号令在淘汰类目录中删除了一次性发泡塑料餐具,被禁14年之久的发泡餐具从5月1日起合法回归市场。“突然解禁”一时引发众多争议。一次性发泡塑料餐具是否有毒?有毒论之一:一次性发泡塑料餐具是由聚苯乙烯加丁烷发泡剂制成的,发泡塑料餐具受热会产生致癌物。而聚苯乙烯是由苯乙烯这种小分子聚合而成的大分子,无毒。但苯乙烯的单体是有毒的,如果聚合的时候小分子没有完 The end of February this year, the National Development and Reform Commission Order 21 in the elimination of category deleted one-time plastic foam tableware, banned foaming tableware for 14 years from May 1 legally back to the market. “Suddenly lifting of the ban” for a time caused a lot of controversy. Disposable foam plastic tableware is toxic? Poisonous theory: one-time foam plastic tableware is made of polystyrene plus butane foam, foam plastic tableware will produce carcinogenic heat. The polystyrene is a small molecule made of styrene from the polymerization, non-toxic. But styrene monomer is toxic, if the polymerization is not finished when the small molecules