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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hamilton, Andrew R.
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Interfacial characteristics of multi-material SS316L/IN718 fabricated by laser powder bed fusion and processed by high-pressure torsion
- 2023Fatigue crack initiation and growth behavior within varying notch geometries in the low-cycle fatigue regime for FV566 turbine blade materialcitations
- 2023Fatigue crack initiation and growth behavior within varying notch geometries in the low-cycle fatigue regime for FV566 turbine blade materialcitations
- 2023Hydrated behavior of multilayer polyelectrolyte-nanoclay coatings on porous materials and demonstration of shape memory effectcitations
- 2023Hydrated behavior of multilayer polyelectrolyte-nanoclay coatings on porous materials and demonstration of shape memory effectcitations
- 2023Interfacial characteristics of austenitic 316L and martensitic 15-5PH stainless steels joined by laser powder bed fusioncitations
- 2022Effects of rescanning parameters on densification and microstructural refinement of 316L stainless steel fabricated by laser powder bed fusioncitations
- 2021Fatigue crack initiation and growth behavior in a notch with periodic overloads in the low-cycle fatigue regime of FV566 ex-service steam turbine blade materialcitations
- 2021Fatigue crack initiation and growth behavior in a notch with periodic overloads in the low-cycle fatigue regime of FV566 ex-service steam turbine blade materialcitations
- 2019Behaviour of 3D printed PLA and PLA-PHA in marine environmentscitations
- 2016Porous materials with tunable structure and mechanical properties via templated layer-by-layer assemblycitations
- 2016Optimization and Prediction of Mechanical and Thermal Properties of Graphene/LLDPE Nanocomposites by Using Artificial Neural Networkscitations
- 2015Melt Processing and Properties of Polyamide 6/Graphene Nanoplatelet Compositescitations
- 2015Characterisation of melt processed nanocomposites of Polyamide 6 subjected to uniaxial-drawing
- 2015Customization of mechanical properties and porosity of bone tissue scaffold materials via Layer-by-Layer assembly of polymer-nanocomposite coatingscitations
- 2013Evaluation of the anisotropic mechanical properties of reinforced polyurethane foamscitations
Places of action
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article
Behaviour of 3D printed PLA and PLA-PHA in marine environments
Abstract
The accumulation of marine debris in the oceans has been escalating. There is an urgent need to develop new technologies that efficiently record and transmit ocean data without contributing to ocean pollution. In this study, the behaviour of Polylactic Acid (PLA) and Polylactic Acid-Polyhydroxyalkanoate (PLA-PHA) in marine environments was analysed in order to assess biodegradability in marine applications. 3D Printed samples were submerged completely in seawater and cyclically in a salt spray chamber. Their change in mechanical properties was evaluated by conducting uniaxial tension tests after submersion periods of up to 45 days and failure regions were observed in microscope. Contrarily to PLA’s behaviour, PLA-PHA’s samples suffered embrittlement and registered losses in elongation at break of around 10-18%. The alignment of salt crystals and other impurities in the failure regions suggests that embrittlement could be related with environmental stress cracking resulting from the penetration of those impurities into the polymer. Such inclusions originate residual stresses which lead to a faster and more brittle failure. Embrittlement could also be related to an increase in crystallinity caused by chain scission of amorphous regions by means of chemical degradation. Further evaluation of changes in molecular weight should be conducted to confirm the latter.