What question did this study set out to answer?

The aim is to evaluate the efficacy of 3D printed filters for separating critical elements from NdFeB magnets using aminophosphonic acid functional groups.

April 11, 2026Journal of Materials Chemistry A0 citationsOpen Access

Separating critical elements from NdFeB magnets with aminophosphonic acid functionalised 3D printed filters and their detailed structural characterisation

EVEmilia J. VirtanenUniversity of Jyväskylä JYJanne YliharjuUniversity of Jyväskylä EKEsa KukkonenUniversity of Jyväskylä

Key Points

The aim is to evaluate the efficacy of 3D printed filters for separating critical elements from NdFeB magnets using aminophosphonic acid functional groups.
Developed filters using polyamide nylon-12 as the polymer matrix.
Incorporated aminophosphonic acid functionalised resin into the filter design.
Conducted structural characterisation to assess filter performance.
Filters demonstrated high efficiency in separating elements from NdFeB magnets.
Structural analysis revealed the integrity and functionality of the filters post-separation.

Abstract

3D printed filters containing 70 wt% of polyamide (PA) nylon-12 as a polymer matrix and either 30 wt% of a commercial aminophosphonic acid functionalised resin (Lewatit TP260) or a synthetized...

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