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Structural evolution of PCL during melt extrusion 3D printing

DOI: 10.1002/mame.201700494 DOI Help

Authors: Fengyuan Liu (University of Manchester) , Cian Vyas (University of Manchester) , Gowsihan Poologasundarampillai (University of Manchester; Research Complex at Harwell) , Ian Pape (Diamond Light Source) , Sri Hinduja (University of Manchester) , Wajira Mirihanage (University of Manchester) , Paulo Bartolo (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Macromolecular Materials And Engineering , VOL 2

State: Published (Approved)
Published: December 2017
Diamond Proposal Number(s): 14877

Abstract: Screw-assisted material extrusion technique is developed for tissue engineering applications to produce scaffolds with well-defined multiscale microstructural features and tailorable mechanical properties. In this study, in situ time-resolved synchrotron diffraction is employed to probe extrusion-based 3D printing of polycaprolactone (PCL) filaments. Time-resolved X-ray diffraction measurements reveals the progress of overall crystalline structural evolution of PCL during 3D printing. Particularly, in situ experimental observations provide strong evidence for the development of strong directionality of PCL crystals during the extrusion driven process. Results also show the evidence for the realization of anisotropic structural features through the melt extrusion-based 3D printing, which is a key development toward mimicking the anisotropic properties and hierarchical structures of biological materials in nature, such as human tissues.

Journal Keywords: additive biomanufacturing; crystallization; in situ X-ray diffraction; screw-assisted melt extrusion

Diamond Keywords: Additive Manufacturing

Subject Areas: Biology and Bio-materials

Instruments: B16-Test Beamline

Added On: 05/01/2018 08:41

Discipline Tags:

Biomaterials Materials Science

Technical Tags:

Scattering Wide Angle X-ray Scattering (WAXS)