Salstrom, N. (2020) The effect of print speed and material aging on the mechanical properties of a self-healing nanocomposite hydrogel.pdf (1.89 MB)
The effect of print speed and material aging on the mechanical properties of a self-healing nanocomposite hydrogel
journal contribution
posted on 2020-05-29, 10:40 authored by Nathalie Sallstrom, Athanasios GoulasAthanasios Goulas, Simon MartinSimon Martin, Daniel EngstromDaniel EngstromA UV-curable nanoclay-zwitterionic hydrogel is synthesised and evaluated though rheological and mechanical testing. The result shows that aging time of the pre-gel have a big impact on storage and loss of modulus which both increases with increasing aging time, particularly in the first 48 h. The pre-gel is successfully printed and is shown to be able to support itself making it possible to fully print structures before curing. Compression and tensile samples are printed and compared to cast samples. The pre-gel aging time showed that an increased time resulted in a lower strain at failure for both casted and extruded samples. However, when printing with a speed of 10 mm/s with UV-curing during printing, a significant increase in strain at failure is achieved. Furthermore, the compressed samples display self-healing abilities at room temperature and almost completely returns to its original state before compression occurred.
Funding
(EPSRC) CDT - Additive Manufacturing : EP/L01534X/1
History
School
- Mechanical, Electrical and Manufacturing Engineering
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
Additive ManufacturingVolume
35Pages
101253Publisher
Elsevier BVVersion
- VoR (Version of Record)
Rights holder
© The authorsPublisher statement
This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2020-04-13Publication date
2020-05-11Copyright date
2020ISSN
2214-8604eISSN
2214-8604Publisher version
Language
- en
Depositor
Dr Daniel Engstrom. Deposit date: 28 May 2020Article number
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