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Synchrotron X-ray scattering analysis of Nylon-12 crystallisation variation depending on 3D printing conditions
Authors:
Benjamin
De Jager
(MBLEM, University of Oxford)
,
Thomas
Moxham
(MBLEM, University of Oxford)
,
Cyril
Besnard
(MBLEM, University of Oxford)
,
Enrico
Salvati
(MBLEM, University of Oxford; University of Udine)
,
Jingwei
Chen
(MBLEM, University of Oxford)
,
Igor P.
Dolbnya
(Diamond Light Source)
,
Alexander M.
Korsunsky
(MBLEM, University of Oxford; University of Udine)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Polymers
, VOL 12
State:
Published (Approved)
Published:
May 2020
Diamond Proposal Number(s):
20428
,
24513

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.
Journal Keywords: fused filament fabrication; polyamide 12 (PA12); crystallisation; differential scanning calorimeter; X-ray diffraction
Subject Areas:
Chemistry
Instruments:
B16-Test Beamline
Documents:
polymers-12-01169.pdf