Improving Sustainability through Covalent Adaptable Networks in the Recycling of Polyurethane Plastics

被引：8

作者：

Miravalle, Edoardo ^{[1
]}

Bracco, Pierangiola ^{[1
,2
]}

Brunella, Valentina ^{[1
,2
]}

Barolo, Claudia ^{[1
,2
,3
]}

Zanetti, Marco ^{[1
,2
,3
]}

机构：

[1] Univ Turin, NIS Interdept Ctr, Dept Chem, Via P Giuria 7, I-10125 Turin, Italy

[2] Univ Turin, INSTM Reference Ctr, Via G Quarello 15A, I-10135 Turin, Italy

[3] Univ Turin, ICxT Interdept Ctr, Via Lungo Dora Siena 100, I-10153 Turin, Italy

来源：

POLYMERS | 2023年 / 15卷 / 18期

关键词：

mechanical recycling; CAN; polyurethanes; polyhydroxyurethane; poly(urethane-urea); polythiourethanes; composites; TRIPLE SHAPE-MEMORY; CROSS-LINK DENSITY; POLYMER NETWORKS; RECOVERY; BIODEGRADATION; THERMOSETS; ELASTOMER; VITRIMERS; OIL;

D O I：

10.3390/polym15183780

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The global plastic waste problem has created an urgent need for the development of more sustainable materials and recycling processes. Polyurethane (PU) plastics, which represent 5.5% of globally produced plastics, are particularly challenging to recycle owing to their crosslinked structure. Covalent adaptable networks (CANs) based on dynamic covalent bonds have emerged as a promising solution for recycling PU waste. CANs enable the production of thermoset polymers that can be recycled using methods that are traditionally reserved for thermoplastic polymers. Reprocessing using hot-pressing techniques, in particular, proved to be more suited for the class of polyurethanes, allowing for the efficient recycling of PU materials. This Review paper explores the potential of CANs for improving the sustainability of PU recycling processes by examining different types of PU-CANs, bond types, and fillers that can be used to optimise the recycling efficiency. The paper concludes that further research is needed to develop more cost-effective and industrial-friendly techniques for recycling PU-CANs, as they can significantly contribute to sustainable development by creating recyclable thermoset polymers.

引用

页数：35