Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing
The polyamide (PA)-12 material used for additive manufacturing was studied in aspects of morphology and their structural properties for basic stages received during 3D laser printing. Samples were real, big-scale production powders. The structure of polymer was evaluated from the crystallinity point...
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doaj-21d693aa5e2f43e98f3234c284e570ae2021-03-07T00:02:40ZengMDPI AGPolymers2073-43602021-03-011381081010.3390/polym13050810Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D PrintingGražyna Simha Martynková0Aleš Slíva1Gabriela Kratošová2Karla Čech Barabaszová3Soňa Študentová4Jan Klusák5Silvie Brožová6Tomáš Dokoupil7Sylva Holešová8Nanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicInstitute of Transport, Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicNanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicNanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicDepartment of Chemistry, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicDepartment of Chemistry, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicDepartment of Non-Ferrous Metals, Refining and Recycling, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicOne3D s.r.o., Jižní 1443/29, 78985 Mohelnice, Czech RepublicNanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 70800 Ostrava, Czech RepublicThe polyamide (PA)-12 material used for additive manufacturing was studied in aspects of morphology and their structural properties for basic stages received during 3D laser printing. Samples were real, big-scale production powders. The structure of polymer was evaluated from the crystallinity point of view using XRD, FTIR, and DSC methods and from the surface properties using specific surface evaluation and porosity. Scanning electron microscopy was used to observe morphology of the surface and evaluate the particle size and shape via image analysis. Results were confronted with laser diffraction particles size measurement along with an evaluation of the specific surface area. Fresh PA12 powder was found as inhomogeneous in particle size of material with defective particles, relatively high specific surface, high lamellar crystallite size, and low crystallinity. The scrap PA12 crystallinity was about 2% higher than values for fresh PA12 powder. Particles had a very low, below 1 m<sup>2</sup>/g, specific surface area; particles sintered as twin particles and often in polyhedral shapes.https://www.mdpi.com/2073-4360/13/5/810PA12structuremorphology3D print |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gražyna Simha Martynková Aleš Slíva Gabriela Kratošová Karla Čech Barabaszová Soňa Študentová Jan Klusák Silvie Brožová Tomáš Dokoupil Sylva Holešová |
spellingShingle |
Gražyna Simha Martynková Aleš Slíva Gabriela Kratošová Karla Čech Barabaszová Soňa Študentová Jan Klusák Silvie Brožová Tomáš Dokoupil Sylva Holešová Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing Polymers PA12 structure morphology 3D print |
author_facet |
Gražyna Simha Martynková Aleš Slíva Gabriela Kratošová Karla Čech Barabaszová Soňa Študentová Jan Klusák Silvie Brožová Tomáš Dokoupil Sylva Holešová |
author_sort |
Gražyna Simha Martynková |
title |
Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing |
title_short |
Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing |
title_full |
Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing |
title_fullStr |
Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing |
title_full_unstemmed |
Polyamide 12 Materials Study of Morpho-Structural Changes during Laser Sintering of 3D Printing |
title_sort |
polyamide 12 materials study of morpho-structural changes during laser sintering of 3d printing |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2021-03-01 |
description |
The polyamide (PA)-12 material used for additive manufacturing was studied in aspects of morphology and their structural properties for basic stages received during 3D laser printing. Samples were real, big-scale production powders. The structure of polymer was evaluated from the crystallinity point of view using XRD, FTIR, and DSC methods and from the surface properties using specific surface evaluation and porosity. Scanning electron microscopy was used to observe morphology of the surface and evaluate the particle size and shape via image analysis. Results were confronted with laser diffraction particles size measurement along with an evaluation of the specific surface area. Fresh PA12 powder was found as inhomogeneous in particle size of material with defective particles, relatively high specific surface, high lamellar crystallite size, and low crystallinity. The scrap PA12 crystallinity was about 2% higher than values for fresh PA12 powder. Particles had a very low, below 1 m<sup>2</sup>/g, specific surface area; particles sintered as twin particles and often in polyhedral shapes. |
topic |
PA12 structure morphology 3D print |
url |
https://www.mdpi.com/2073-4360/13/5/810 |
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