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7150846 
Journal Article 
Polyvinylidene fluoride (PVDF) as a feedstock for material extrusion additive manufacturing 
Momenzadeh, N; Miyanaji, H; Porter, DA; Berfield, TA; , 
2020 
1 
Rapid Prototyping Journal
ISSN: 1355-2546
EISSN: 1758-7670 
EMERALD GROUP PUBLISHING LTD 
BINGLEY 
26 
1 
156-163 
WOS:000506065900016 
Purpose This study aims to investigate the material extrusion additive manufacturing (MEAM) deposition parameters for creating viable 3-D printed polyvinylidene fluoride (PVDF) structures with a balanced mix of mechanical and electrical properties. Design/methodology/approach Different combinations of deposition conditions are tested, and the influence of these parameters on the final dimensional accuracy, semi-crystalline phase microstructure and effective mechanical strength of MEAM homopolymer PVDF printed parts is experimentally assessed. Considering printed part integrity, appearance, print time and dimensional accuracy, MEAM parameters for PVDF are suggested. Findings A range of viable printing parameters for MEAM fabricated PVDF Kynar 740 objects of different heights and in-plane length dimensions was determined. For PVDF structures printed under the suggested conditions, the mechanical response and the microstructure development related to Piezoelectric response are reported. Originality/value This research first reports on a range of parameters that have been confirmed to facilitate effective MEAM printing of 3-D PVDF objects, presents effects of the individual parameters and gives the mechanical and microstructure properties of PVDF structures fabricated under the suggested deposition conditions. 
Additive manufacturing; Fused filament fabrication; Piezoelectricity; Material extrusion additive manufacturing; Polymer microstructure; PVDF 
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