The recycling of poly(lactide) (PLA) is studied. Using methanol and alkali‐metal‐halides as catalyst, PLA is degraded to produce methyl lactate, which is a suitable chemical for the regeneration of PLA. An excellent degree of degradation (conversions: >99%, yields: >99%) is achieved in less than 20 min utilizing microwave heating. Remarkably, PLA goods are successfully converted into methyl lactate.

中文翻译：

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碱金属卤化物催化选择性降解报废聚丙交酯

研究了聚丙交酯（PLA）的回收利用。使用甲醇和碱金属卤化物作为催化剂，PLA降解生成乳酸甲酯，这是一种适合PLA再生的化学品。利用微波加热，在不到20分钟的时间内即可实现出色的降解度（转化率：> 99％，产率：> 99％）。值得注意的是，PLA产品已成功转化为乳酸甲酯。