| People | Locations | Statistics |
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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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Lee, Koon-Yang
Imperial College London
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023Predicting filling efficiency of composite resin injection repaircitations
- 2021<i>Komagataeibacter</i> Tool Kit (KTK): A Modular Cloning System for Multigene Constructs and Programmed Protein Secretion from Cellulose Producing Bacteria.citations
- 2020Nanomaterials Derived from Fungal Sources-Is It the New Hype?citations
- 2020Upcycling Poultry Feathers with (Nano)cellulose:Sustainable Composites Derived from Nonwoven Whole Feather Preformscitations
- 2020High porosity cellulose nanopapers as reinforcement in multi-layer epoxy laminatescitations
- 2019Nanocellulose reinforced polymer composites: Computational analysis of structure-mechanical properties relationshipscitations
- 2019Cationic starch as strengthening agent in nanofibrillated and bacterial cellulose nanopapers
- 2019Nanomaterials Derived from Fungal Sources - Is It the New Hype?citations
- 2018Better togethercitations
- 2018Thinner and better: (Ultra-)low grammage bacterial cellulose nanopaper-reinforced polylactide composite laminates
- 2017Sample geometry dependency on the measured tensile properties of cellulose nanopaperscitations
- 2016Understanding the Dispersion and Assembly of Bacterial Cellulose in Organic Solventscitations
- 2016Ductile unidirectional continuous rayon fibre-reinforced hierarchical compositescitations
- 2014Bacterial Cellulose Nanopaper as Reinforcement for Polylactide Compositescitations
- 2014Aligned unidirectional PLA/bacterial cellulose nanocomposite fibre reinforced PDLLA compositescitations
- 2014On the use of nanocellulose as reinforcement in polymer matrix compositescitations
- 2013Porous copolymers of ε-caprolactone as scaffolds for tissue engineeringcitations
- 2012Nano-fibrillated cellulose vs bacterial cellulose
- 2012Carbon Fiber: Properties, Testing, and Analysiscitations
- 2012Interfaces in Cross-Linked and Grafted Bacterial Cellulose/Poly(Lactic Acid) Resin Compositescitations
- 2012Nano-fibrillated cellulose vs bacterial cellulose:Reinforcing ability of nanocellulose obtained topdown or bottom-up
- 2009Renewable nanocomposite polymer foams synthesized from Pickering emulsion templatescitations
- 2009Surface functionalisation of bacterial cellulose as the route to produce green polylactide nanocomposites with improved propertiescitations
Places of action
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article
Aligned unidirectional PLA/bacterial cellulose nanocomposite fibre reinforced PDLLA composites
Abstract
In an effort to enhance the properties of polylactide (PLA), we have developed melt-spinning techniques to produce both PLA/nanocellulose composite fibres, and a method akin to layered filament winding followed by compression moulding to produce self-reinforced PLA/nanocellulose composites. Poly(L-lactide) (PLLA) fibres were filled with 2 wt.% neat and modified bacterial cellulose (BC) in an effort to improve the tensile properties over neat PLA fibres. BC increased the viscosity of the polymer melt and reduced the draw-ratio of the fibres, resulting in increased fibre diameters. Nonetheless, strain induced chain orientation due to melt spinning led to PLLA fibres with enhanced tensile modulus (6 GPa) and strength (127 MPa), over monolithic PLLA, previously measured at 1.3 GPa and 61 MPa, respectively. The presence of BC also enhanced the nucleation and growth of crystals in PLA. We further produced PLA fibres with 7 wt.% cellulose nanocrystals (CNCs), which is higher than the percolation threshold (equivalent to 6 vol.%). These fibres were spun in multiple, alternating controlled layers onto spools, and subsequently compression moulded to produce unidirectional self-reinforced PLA composites consisting of 60 vol.% PLLA fibres reinforced with 7 wt.% CNC in a matrix of amorphous PDLLA, which itself contained 7 wt.% of CNC. We observed improvements in viscoelastic properties of up to 175% in terms of storage moduli in bending. Furthermore, strains to failure for PLLA fibre reinforced PDLLA were recorded at 17%.