Chulalongkorn University researchers develop process to convert discarded fishing nets into recycled polyamide 6 filament for FDM/FFF 3D printing. The team, based in Bangkok, Thailand, focuses on chemical recycling methods to break down nylon-based ghost nets into high-quality pellets suitable for extrusion into 3D printing filament. This initiative aims to address the environmental impact of marine plastic waste by creating a circular supply chain for additive manufacturing materials. The project involves material characterization to ensure the recycled polyamide 6 maintains mechanical properties comparable to virgin industrial-grade filaments.

This development addresses the persistent challenge of material sustainability in the FDM/FFF market, where the reliance on virgin petroleum-based polymers remains high. While companies like Reflow and various startups already offer recycled PETG or rPLA, the specific focus on marine-sourced polyamide 6 targets a high-performance segment often used in functional prototyping and end-use parts. The global market for recycled 3D printing materials is expanding as manufacturers face increasing pressure to meet ESG targets and reduce carbon footprints. By positioning itself in the materials research value chain, Chulalongkorn University provides a pathway for local waste management sectors to integrate with the industrial additive manufacturing ecosystem.

For this material to reach commercial viability, the research team must demonstrate consistent batch-to-batch mechanical performance and provide comprehensive technical data sheets for end-users. Industrial adoption will depend on the cost-effectiveness of the collection and purification process compared to existing virgin polyamide 6 supply chains. Users should prioritize testing this material for non-critical, aesthetic, or low-load applications until long-term fatigue and thermal stability data are fully validated.