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June 8, 2026Additive Manufacturing LettersOpen Access

End-capped Polyamide 12: Impact of Powder Bed Fusion-Induced Aging Mechanisms

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Authors

FNFabian NeitzelFNFlorian van der NolleIKIvo Kletetzka

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Overview

Randomized trial evaluates aging effects of recycled end-capped polyamide 12 on mechanical properties in additive manufacturing, suggesting enhanced sustainability.

Key Points

  • This study aims to investigate the recycling performance and aging mechanisms of end-capped polyamide 12 in powder bed fusion processes.
  • Evaluated PA12 powder with end-capped polymer chains over five processing cycles with 30% virgin powder replenished after each cycle.
  • Analyzed particle morphology, thermal properties, molecular weight evolution, melt flow behavior, and mechanical part performance pre- and post-aging.
  • Utilized scanning electron microscopy, differential scanning calorimetry, and size-exclusion chromatography for assessments.
  • Particle morphology remained stable, confirming consistent shape and size distribution after reuse.
  • Molecular weight increased moderately, with lower reactivity compared to PA 2200 and minor changes in thermal properties.
  • Tensile strength and Young's modulus remained stable across cycles despite a 5% decrease in elongation at break.

Cite This Study

Neitzel et al. (2026) studied this question.

synapsesocial.com/papers/6a265cffad53cfb9357c64f4https://doi.org/10.1016/j.addlet.2026.100395
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