16 April 2024 | Chrysanthos Maraveas, Ioannis Vasileios Kyrtopoulos and Konstantinos G. Arvanitis
This review evaluates the viability of 3D printing in recycling polymers. The increasing use of plastics in industrial and agricultural applications has led to significant pollution, prompting the need for alternative waste management methods. Conventional methods like landfills and incineration generate greenhouse gases, making 3D printing an attractive alternative. The review highlights the application of 3D printing methods such as Fused Particle Fabrication (FPF), Hot Melt Extrusion (HME), and Fused Deposition Modelling (FDM) to create filaments from plastics. These methods have been used in local recycling setups, with data collected from 39 studies. The findings show that 3D printing can produce agricultural plastics like Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS), Polyethylene Terephthalate (PET), and High-Density Polyethylene (HDPE), which have properties comparable to virgin plastics, indicating the viability of 3D printing in managing plastic pollution. However, 3D-printed plastics deteriorate rapidly under UV light and are non-biodegradable, posing further risks. UV stabilization can help reduce deterioration, increasing longevity and reducing disposal. Future research should focus on improving the durability of 3D-printed agricultural plastics and enhancing UV stability.
The review also discusses the risks of recycling polymers using 3D printing, including the deterioration of mechanical properties with repeated recycling cycles and the vulnerability of recycled materials to defects such as fiber misalignment and breakage. These issues limit the long-term use of 3D-printed plastics. Despite these challenges, 3D printing offers benefits such as reducing plastic pollution, creating sustainable materials, and supporting circular economy goals. The review emphasizes the importance of further research to enhance the efficiency and sustainability of 3D printing in recycling plastics.This review evaluates the viability of 3D printing in recycling polymers. The increasing use of plastics in industrial and agricultural applications has led to significant pollution, prompting the need for alternative waste management methods. Conventional methods like landfills and incineration generate greenhouse gases, making 3D printing an attractive alternative. The review highlights the application of 3D printing methods such as Fused Particle Fabrication (FPF), Hot Melt Extrusion (HME), and Fused Deposition Modelling (FDM) to create filaments from plastics. These methods have been used in local recycling setups, with data collected from 39 studies. The findings show that 3D printing can produce agricultural plastics like Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS), Polyethylene Terephthalate (PET), and High-Density Polyethylene (HDPE), which have properties comparable to virgin plastics, indicating the viability of 3D printing in managing plastic pollution. However, 3D-printed plastics deteriorate rapidly under UV light and are non-biodegradable, posing further risks. UV stabilization can help reduce deterioration, increasing longevity and reducing disposal. Future research should focus on improving the durability of 3D-printed agricultural plastics and enhancing UV stability.
The review also discusses the risks of recycling polymers using 3D printing, including the deterioration of mechanical properties with repeated recycling cycles and the vulnerability of recycled materials to defects such as fiber misalignment and breakage. These issues limit the long-term use of 3D-printed plastics. Despite these challenges, 3D printing offers benefits such as reducing plastic pollution, creating sustainable materials, and supporting circular economy goals. The review emphasizes the importance of further research to enhance the efficiency and sustainability of 3D printing in recycling plastics.