| 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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Paiva, Maria C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Application of sound waves during the curing of an acrylic resin and its composites based on short carbon fibers and carbon nanofibers
- 2024Multi-scale experimental investigation on the structural behaviour of novel nanocomposite/natural textile-reinforced mortarscitations
- 2024High-performance PEEK/MWCNT nanocomposites: Combining enhanced electrical conductivity and nanotube dispersioncitations
- 2024Shape-memory polymers based on carbon nanotube composites
- 2023Fabrication of low electrical percolation threshold multi-walled carbon nanotube sensors using magnetic patterningcitations
- 2023Graphene/polyurethane nanocomposite coatings – Enhancing the mechanical properties and environmental resistance of natural fibers for masonry retrofittingcitations
- 2022Hybrid structures for Achilles' tendon repaircitations
- 2022The potential of beeswax colloidal emulsion/films for hydrophobization of natural fibers prior to NTRM manufacturingcitations
- 20213D printing of graphene-based polymeric nanocomposites for biomedical applicationscitations
- 2021Development of electrically conductive polymer nanocomposites for the automotive cable industrycitations
- 2021Poly(lactic acid)/graphite nanoplatelet nanocomposite filaments for ligament scaffoldscitations
- 2021Rheologically assisted design of conductive adhesives for stencil printing on PCBcitations
- 2021Insight into the Effects of Solvent Treatment of Natural Fibers Prior to Structural Composite Casting: Chemical, Physical and Mechanical Evaluationcitations
- 2021Polylactic acid/carbon nanoparticle composite filaments for sensingcitations
- 2020Mixed Carbon Nanomaterial/Epoxy Resin for Electrically Conductive Adhesivescitations
- 2018Effects of particle size and surface chemistry on the dispersion of graphite nanoplates in polypropylene compositescitations
- 2018Electrically conductive polyetheretherketone nanocomposite filaments: from production to fused deposition modelingcitations
- 2017Green synthesis of novel biocomposites from treated cellulosic fibers and recycled bio-plastic polylactic acid
- 2017Biomedical films of graphene nanoribbons and nanoflakes with natural polymerscitations
- 2016Chitosan nanocomposites based on distinct inorganic fillers for biomedical applicationscitations
Places of action
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article
Graphene/polyurethane nanocomposite coatings – Enhancing the mechanical properties and environmental resistance of natural fibers for masonry retrofitting
Abstract
Natural fibers form economic and environmentally friendly substitutes for synthetic fibers in civil engineering composites. However, natural fibers present flaws, irregular morphology and reduced durability in alkaline media. The present work reports the application of a new nanocomposite-based coating for flax and hemp fibers that enhances their mechanical properties and environmental resistance. The nanocomposite coating is based on graphene nanoplatelets (GNPs) and a waterborne polyurethane (WPU). Nanocomposites were prepared with pristine and surface modified GNPs, the latter obtained by polydopamine self-polymerization, tailoring the surface chemistry for strong interfaces with polyurethane. The coated fibers demonstrate enhanced tensile properties and low water absorption. Hemp yarns present 120% and 163% increases in tensile strength and elastic modulus, respectively, compared to the as-received yarns. The yarn properties achieved are adequate for their application as reinforcement of brittle and hydrophilic matrices such as lime, thus setting a new milestone in natural fiber composites manufacturing. ; FCT -Fundação para a Ciência e a Tecnologia(POCI-01-0145-FEDER-007633)