La Mantia Francesco Paolo, Botta Luigi, Mistretta Maria Chiara, Di Fiore Antonino, Titone Vincenzo
Department of Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy.
INSTM, Via Giusti 9, 50125 Firenze, Italy.
Polymers (Basel). 2020 Oct 8;12(10):2297. doi: 10.3390/polym12102297.
Mechanical recycling is one of the possible ways to enhance the value of postconsumer plastic materials. However, the final performance of the recycled material will strongly depend on the quality of the selection made on the recycled product and on the degradation of the properties. In this context, the present study examines the effect of reprocessing for five successive extrusion cycles on the rheological, mechanical and thermal properties of a poly(butylene adipate-co-terephthalate) (PBAT)-based blend on samples reprocessed in both dry and wet conditions. The results showed that when the sample was processed after drying, degradation of the material was less than when it was processed in wet conditions. However, the experimental results showed that the decrease of rheological and mechanical properties was not so dramatic, and therefore the material could be reused in both cases.
机械回收是提高消费后塑料材料价值的一种可行方法。然而，回收材料的最终性能将很大程度上取决于对回收产品的选择质量以及性能的降解情况。在此背景下，本研究考察了在干燥和潮湿条件下对基于聚（己二酸丁二醇酯-对苯二甲酸丁二醇酯）（PBAT）的共混物进行五个连续挤出循环的再加工对其流变、机械和热性能的影响。结果表明，样品干燥后加工时，材料的降解程度小于在潮湿条件下加工时的降解程度。然而，实验结果表明，流变和机械性能的下降并不那么显著，因此在两种情况下材料都可以重复使用。
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