Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations
The advent of 3D printing has enabled the rapid prototyping of complex structures with relatively shorter production times and lower material wastage. Despite these advantages, it is still a challenge to fabricate nanofiller-reinforced lattices using 3D printing. Here, we report for the first time,...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/144382 |
| _version_ | 1826124605986701312 |
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| author | Markandan, Kalaimani Lai, Chang Quan |
| author2 | Temasek Laboratories |
| author_facet | Temasek Laboratories Markandan, Kalaimani Lai, Chang Quan |
| author_sort | Markandan, Kalaimani |
| collection | NTU |
| description | The advent of 3D printing has enabled the rapid prototyping of complex structures with relatively shorter production times and lower material wastage. Despite these advantages, it is still a challenge to fabricate nanofiller-reinforced lattices using 3D printing. Here, we report for the first time, the successful 3D printing of graphene-polymer octet-truss lattices using the stereolithography (SLA) technique. The factors influencing the mechanical properties of the printed graphene-polymer composite, such as filler concentration, solvent addition and post-fabrication baking temperature and duration were investigated in detail. Our results showed that stereolithographic 3D printing can confer the same improvement in material modulus with ~ 10 times less graphene concentration compared to other processing techniques reported in literature. Our calculations suggest that this was due to a unique characteristic of stereolithography, which enabled the selection and incorporation of aligned graphene platelets into the polymer matrix during the 3D printing process. These exceptional mechanical properties of SLA fabricated polymer-graphene composites are indicative of their potential for use in various applications such as aerospace, automotive and sports equipment. |
| first_indexed | 2024-10-01T06:23:28Z |
| format | Journal Article |
| id | ntu-10356/144382 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:23:28Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1443822021-02-05T07:27:33Z Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations Markandan, Kalaimani Lai, Chang Quan Temasek Laboratories Engineering::Materials Stereolithography Graphene The advent of 3D printing has enabled the rapid prototyping of complex structures with relatively shorter production times and lower material wastage. Despite these advantages, it is still a challenge to fabricate nanofiller-reinforced lattices using 3D printing. Here, we report for the first time, the successful 3D printing of graphene-polymer octet-truss lattices using the stereolithography (SLA) technique. The factors influencing the mechanical properties of the printed graphene-polymer composite, such as filler concentration, solvent addition and post-fabrication baking temperature and duration were investigated in detail. Our results showed that stereolithographic 3D printing can confer the same improvement in material modulus with ~ 10 times less graphene concentration compared to other processing techniques reported in literature. Our calculations suggest that this was due to a unique characteristic of stereolithography, which enabled the selection and incorporation of aligned graphene platelets into the polymer matrix during the 3D printing process. These exceptional mechanical properties of SLA fabricated polymer-graphene composites are indicative of their potential for use in various applications such as aerospace, automotive and sports equipment. Accepted version The authors would like to acknowledge funding for this project by the Temasek Research Fellowship. 2020-11-02T08:37:01Z 2020-11-02T08:37:01Z 2020 Journal Article Markandan, K., & Lai, C. Q. (2020). Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations. Composites Part A: Applied Science and Manufacturing, 129, 105726-. doi:10.1016/j.compositesa.2019.105726 1359-835X https://hdl.handle.net/10356/144382 10.1016/j.compositesa.2019.105726 129 105726 en Composites Part A: Applied Science and Manufacturing © 2019 Elsevier Ltd. All rights reserved. This paper was published in Composites Part A: Applied Science and Manufacturing and is made available with permission of Elsevier Ltd. application/pdf |
| spellingShingle | Engineering::Materials Stereolithography Graphene Markandan, Kalaimani Lai, Chang Quan Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title | Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title_full | Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title_fullStr | Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title_full_unstemmed | Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title_short | Enhanced mechanical properties of 3D printed graphene-polymer composite lattices at very low graphene concentrations |
| title_sort | enhanced mechanical properties of 3d printed graphene polymer composite lattices at very low graphene concentrations |
| topic | Engineering::Materials Stereolithography Graphene |
| url | https://hdl.handle.net/10356/144382 |
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