Porous carbons with complex 3D geometries via selective laser sintering of whey powder
Abstract In addition to the inherent limitations of carbons to melt or flow, a vast majority of carbon precursors deforms during carbonisation, with stereolithography of thermoset resins being the preferred technology for 3D printing of carbons. An alternative is now presented with the possibility o...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-84976-y |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849387871339806720 |
|---|---|
| author | Raúl Llamas-Unzueta Alejandro Reguera-García Miguel A. Montes-Morán J. Angel Menéndez |
| author_facet | Raúl Llamas-Unzueta Alejandro Reguera-García Miguel A. Montes-Morán J. Angel Menéndez |
| author_sort | Raúl Llamas-Unzueta |
| collection | DOAJ |
| description | Abstract In addition to the inherent limitations of carbons to melt or flow, a vast majority of carbon precursors deforms during carbonisation, with stereolithography of thermoset resins being the preferred technology for 3D printing of carbons. An alternative is now presented with the possibility of using a melting-based technology, selective laser sintering (SLS), to fabricate 3D structures that withstand carbonisation. The key factor that makes this happen is whey powder, a natural, abundant and cheap by-product of the dairy industry. When heating the whey powder with a laser at 180–200 ºC for a few seconds, whey particles sinter, and 3D structures are obtained layer-by-layer. Carbonisation of the sintered whey structures brings about 3D porous carbons with excellent mechanical properties that preserve the SLS printed form albeit an isotropic shrinkage (approx. 23%). Melanoidins are identified as responsible for both the sintering and the thermoset behaviour during carbonisation of the whey powder. |
| format | Article |
| id | doaj-art-bf8c456cc08b4d1f8a134353a8de6df8 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-bf8c456cc08b4d1f8a134353a8de6df82025-08-20T03:42:29ZengNature PortfolioScientific Reports2045-23222025-01-0115111110.1038/s41598-024-84976-yPorous carbons with complex 3D geometries via selective laser sintering of whey powderRaúl Llamas-Unzueta0Alejandro Reguera-García1Miguel A. Montes-Morán2J. Angel Menéndez3Instituto de Ciencia y Tecnología del Carbono, INCAR-CSICInstituto de Ciencia y Tecnología del Carbono, INCAR-CSICInstituto de Ciencia y Tecnología del Carbono, INCAR-CSICInstituto de Ciencia y Tecnología del Carbono, INCAR-CSICAbstract In addition to the inherent limitations of carbons to melt or flow, a vast majority of carbon precursors deforms during carbonisation, with stereolithography of thermoset resins being the preferred technology for 3D printing of carbons. An alternative is now presented with the possibility of using a melting-based technology, selective laser sintering (SLS), to fabricate 3D structures that withstand carbonisation. The key factor that makes this happen is whey powder, a natural, abundant and cheap by-product of the dairy industry. When heating the whey powder with a laser at 180–200 ºC for a few seconds, whey particles sinter, and 3D structures are obtained layer-by-layer. Carbonisation of the sintered whey structures brings about 3D porous carbons with excellent mechanical properties that preserve the SLS printed form albeit an isotropic shrinkage (approx. 23%). Melanoidins are identified as responsible for both the sintering and the thermoset behaviour during carbonisation of the whey powder.https://doi.org/10.1038/s41598-024-84976-y |
| spellingShingle | Raúl Llamas-Unzueta Alejandro Reguera-García Miguel A. Montes-Morán J. Angel Menéndez Porous carbons with complex 3D geometries via selective laser sintering of whey powder Scientific Reports |
| title | Porous carbons with complex 3D geometries via selective laser sintering of whey powder |
| title_full | Porous carbons with complex 3D geometries via selective laser sintering of whey powder |
| title_fullStr | Porous carbons with complex 3D geometries via selective laser sintering of whey powder |
| title_full_unstemmed | Porous carbons with complex 3D geometries via selective laser sintering of whey powder |
| title_short | Porous carbons with complex 3D geometries via selective laser sintering of whey powder |
| title_sort | porous carbons with complex 3d geometries via selective laser sintering of whey powder |
| url | https://doi.org/10.1038/s41598-024-84976-y |
| work_keys_str_mv | AT raulllamasunzueta porouscarbonswithcomplex3dgeometriesviaselectivelasersinteringofwheypowder AT alejandroregueragarcia porouscarbonswithcomplex3dgeometriesviaselectivelasersinteringofwheypowder AT miguelamontesmoran porouscarbonswithcomplex3dgeometriesviaselectivelasersinteringofwheypowder AT jangelmenendez porouscarbonswithcomplex3dgeometriesviaselectivelasersinteringofwheypowder |