MaterialsSustainability

Evonik’s INFINAM eCO is made from recycled waste cooking oil

It is the first PA12 powder material for industrial 3D printing that substitutes 100% of fossil feedstock with bio-circular raw material from waste cooking oil in a mass balancing process

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Evonik, a specialty chemicals company, has introduced a new grade of its polyamide 12 powders that is designed to unlock sustainable 3D printing, at scale. INFINAM eCO PA12 is the world’s first PA12 powder material for industrial 3D printing that substitutes 100% of fossil feedstock with bio-circular raw material from waste cooking oil in a mass balancing process. The new, ready-to-use powder features a reduction of CO2 emissions of 74% in comparison to the castor oil-based polyamides of Evonik’s own INFINAM Terra development grade. Having already launched a new PA12 grade with a reduced carbon footprint in late 2022, Evonik is now fully aligning its portfolio of polyamide 12 powders with its circularity approach.

Bio-circular raw materials

True circularity starts with bio-circular raw materials. According to Evonik, more than 15 million tonnes of waste cooking oils are produced annually by restaurants, grocers, hotels and casinos, and other food service providers around the world. In addition to other end-of-life possibilities like being processed into biodiesel, waste cooking oil can be used as a raw material source for chemical production.

Evonik's INFINAM eCO PA12 is made from bio-circular raw material from waste cooking oil in a mass balancing process.

“True circularity is key for being successful in the future. As a pioneer for polymer-based 3D printing materials, Evonik has developed a formula for its PA12 powders to drive circular plastics economy in additive manufacturing”, said Dominic Störkle, Head of the Additive Manufacturing Innovation Growth Field at Evonik. “With the introduction of INFINAM eCO PA12, we go far beyond chemistry to start closing the loop, and meet the market’s expectations for a better future.”

INFINAM eCO PA12 contributes to both footprint and handprint circular values. Besides an improved carbon footprint rate due to renewable energy use for production and bio-circular raw material, Evonik’s new polyamide 12 grade provides a proven reusability rate of 100% of the structure support powder, with a refresh rate of 70/30 of used versus virgin material over several printing cycles – all the while exhibiting excellent processability and stable mechanical properties of 3D printed parts.

Evonik's INFINAM eCO PA12 is made from bio-circular raw material from waste cooking oil in a mass balancing process.

Holistic circularity

Evonik’s formula to drive a circular plastics economy is based on four main cornerstones – reuse, reduce renewable, and recycle.

In addition to factors like production efficiency or reusability of materials, Evonik’s circularity approach includes the total life cycle assessments of its PA12 formulations and their consistent improvement. The specialty chemicals company looks at carbon footprint along with other important factors such as water consumption and land use. By using renewable energy and renewable or recycled feedstocks for production, the group significantly improves the overall eco-balance of its materials. Evonik is exploring new end-of-life opportunities for PA12 powders to fully close the loop.

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Edward Wakefield

Edward is a freelance writer and additive manufacturing enthusiast looking to make AM more accessible and understandable.

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