Review of high-performance sustainable polymers in additive manufacturing

Additive manufacturing (AM), commonly referred to as 3D printing, is viewed as a method of rapid prototyping and an alternative to traditional manufacturing. Recently, there has been increasing interest on sustainability of AM approaches and the materials that can be used. Advances in both AM technologies and polymer chemistry present multiple pathways for AM to become more sustainable, such as raw material sourcing, green synthesis, and end-of-life processing. This review provides a brief overview of AM techniques for polymers, sustainable sourcing of polymers in AM, and the advances of degradable/recyclable polymers in AM. It also provides a perspective of the potential role of AM in economic and chemical circularity, as well as opportunities for digital manufacturing for the future. Biodegradable materials for medical or other biological applications are beyond the scope of this review.