Synchrotron x-ray scattering analysis of nylon-12 crystallisation variation depending on 3D printing conditions

Benjamin de Jager, Thomas Moxham, Cyril Besnard, Enrico Salvati, Jingwei Chen, Igor P. Dolbnya, Alexander M. Korsunsky

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Nylon-12 is an important structural polymer in wide use in the form of fibres and bulk structures. Fused filament fabrication (FFF) is an extrusion-based additive manufacturing (AM) method for rapid prototyping and final product manufacturing of thermoplastic polymer objects. The resultant microstructure of FFF-produced samples is strongly affected by the cooling rates and thermal gradients experienced across the part. The crystallisation behaviour during cooling and solidification influences the micro- and nano-structure, and deserves detailed investigation. A commercial Nylon-12 filament and FFF-produced Nylon-12 parts were studied by differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS) to examine the effect of cooling rates under non-isothermal crystallisation conditions on the microstructure and properties. Slower cooling rates caused more perfect crystallite formation, as well as alteration to the thermal properties.

Original languageEnglish
Article number1169
JournalPolymers
Volume12
Issue number5
DOIs
Publication statusPublished - 1 May 2020
Externally publishedYes

Keywords

  • Crystallisation
  • Differential scanning calorimeter
  • Fused filament fabrication
  • Polyamide 12 (PA12)
  • X-ray diffraction

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