Several researches and technologies on polymer recycling have been driven and justified by the uncontrolled and crescent polymer waste generation in the world. Herein, a critical and concise review on the recent and well-established recycling practices for polymer waste is presented, taking into account not only thermoplastics (or plastics) but also thermosets and elastomers. Moreover, sorting and characterization techniques for polymer waste recycling are detailed and their importance is discussed. An in-depth analysis of the literature indicated that novel and advanced recycling methods for polymeric waste (PW) present difficulties to be applied in the industrial sector, mainly the scientific innovations in the chemical recycling area. In the current scenario, new challenges for the recycling sector are linked to highly contaminated PW from electrical, electronic, and medical products.

世界上不受控制的新月形聚合物废物的产生已推动并证明了聚合物回收的多项研究和技术。在此，不仅对热塑性塑料（或塑料），而且对热固性塑料和弹性体也进行了介绍，对近期和已确立的聚合物废料回收做法进行了严格而简明的评论。此外，详细介绍了聚合物废物回收的分类和表征技术，并讨论了它们的重要性。对文献的深入分析表明，聚合物废料（PW）的新颖和先进的回收方法给工业领域带来了困难，主要是化学回收领域的科学创新。在当前情况下，