Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene
Within this work, ink formulations based on polyorganosilazane (OPSZ) and divinylbenzene (DVB) were developed to be processed by inkjet printing. The formulations were studied regarding their rheological, structural, and thermal properties. The rheological results show that the new formulations meet...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/23/4512 |
| _version_ | 1797399743496716288 |
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| author | Afnan Qazzazie-Hauser Kirsten Honnef Thomas Hanemann |
| author_facet | Afnan Qazzazie-Hauser Kirsten Honnef Thomas Hanemann |
| author_sort | Afnan Qazzazie-Hauser |
| collection | DOAJ |
| description | Within this work, ink formulations based on polyorganosilazane (OPSZ) and divinylbenzene (DVB) were developed to be processed by inkjet printing. The formulations were studied regarding their rheological, structural, and thermal properties. The rheological results show that the new formulations meet the requirements of the inkjet printer by showing both low viscosity (below 20 mPa∙s at printing temperature) and Newtonian flow behavior even at high shear rates. Additionally, the inks have surface tensions in the range of 21 to 26 mN/m<sup>2</sup>. First, printing experiments of single layers were successfully conducted and show that the developed formulations can be processed by inkjet printing. The inks were crosslinked by UV light and then pyrolyzed at 1100 °C resulting in a ceramic yield between 75 and 42%, depending on the ink formulation. The crosslinking behavior was studied via FTIR spectroscopy, and the results reveal that crosslinking occurs mainly via free-radical polymerization of the vinyl group. Furthermore, the results indicate that silicon carbonitride (SiCN) was formed after the pyrolysis. The results of the electrical properties of the amorphous ceramics differ in dependence on the amount of DVB in the formulation. A maximum electrical conductivity of 1.2 S/cm<sup>−1</sup> was observed for a UV-cured sample with a high amount of DVB pyrolyzed at 1100 °C. The generation in electrical conductivity is given by the formation of free carbon derived most likely by DVB. |
| first_indexed | 2024-03-09T01:44:30Z |
| format | Article |
| id | doaj.art-ed0038f9e97043d8b6b056e500232fe7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T01:44:30Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-ed0038f9e97043d8b6b056e500232fe72023-12-08T15:24:15ZengMDPI AGPolymers2073-43602023-11-011523451210.3390/polym15234512Development of Inkjet Printable Formulations Based on Polyorganosilazane and DivinylbenzeneAfnan Qazzazie-Hauser0Kirsten Honnef1Thomas Hanemann2Laboratory for Materials Processing, University of Freiburg, 79110 Freiburg, GermanyLaboratory for Materials Processing, University of Freiburg, 79110 Freiburg, GermanyLaboratory for Materials Processing, University of Freiburg, 79110 Freiburg, GermanyWithin this work, ink formulations based on polyorganosilazane (OPSZ) and divinylbenzene (DVB) were developed to be processed by inkjet printing. The formulations were studied regarding their rheological, structural, and thermal properties. The rheological results show that the new formulations meet the requirements of the inkjet printer by showing both low viscosity (below 20 mPa∙s at printing temperature) and Newtonian flow behavior even at high shear rates. Additionally, the inks have surface tensions in the range of 21 to 26 mN/m<sup>2</sup>. First, printing experiments of single layers were successfully conducted and show that the developed formulations can be processed by inkjet printing. The inks were crosslinked by UV light and then pyrolyzed at 1100 °C resulting in a ceramic yield between 75 and 42%, depending on the ink formulation. The crosslinking behavior was studied via FTIR spectroscopy, and the results reveal that crosslinking occurs mainly via free-radical polymerization of the vinyl group. Furthermore, the results indicate that silicon carbonitride (SiCN) was formed after the pyrolysis. The results of the electrical properties of the amorphous ceramics differ in dependence on the amount of DVB in the formulation. A maximum electrical conductivity of 1.2 S/cm<sup>−1</sup> was observed for a UV-cured sample with a high amount of DVB pyrolyzed at 1100 °C. The generation in electrical conductivity is given by the formation of free carbon derived most likely by DVB.https://www.mdpi.com/2073-4360/15/23/4512polyorganosilazanedivinylbenzeneinkjet printingUV-LED photopolymerizationelectrical conductivityfree carbon |
| spellingShingle | Afnan Qazzazie-Hauser Kirsten Honnef Thomas Hanemann Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene Polymers polyorganosilazane divinylbenzene inkjet printing UV-LED photopolymerization electrical conductivity free carbon |
| title | Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene |
| title_full | Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene |
| title_fullStr | Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene |
| title_full_unstemmed | Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene |
| title_short | Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene |
| title_sort | development of inkjet printable formulations based on polyorganosilazane and divinylbenzene |
| topic | polyorganosilazane divinylbenzene inkjet printing UV-LED photopolymerization electrical conductivity free carbon |
| url | https://www.mdpi.com/2073-4360/15/23/4512 |
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