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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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Mautner, Andreas
University of Natural Resources and Life Sciences, Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024Low-Temperature controlled synthesis of nanocast mixed metal oxide spinels for enhanced OER activitycitations
- 2024Fungal Carbon: A Cost-Effective Tunable Network Template for Creating Supercapacitorscitations
- 20233D printed polylactic acid (PLA) filters reinforced with polysaccharide nanofibers for metal ions capture and microplastics separation from watercitations
- 20233D printed polylactic acid (PLA) filters reinforced with polysaccharide nanofibers for metal ions capture and microplastics separation from watercitations
- 2023Sulfonated hypercrosslinked polymer enhanced structural composite supercapacitorscitations
- 2022Facile Preparation of Mechanically Robust and Functional Silica/Cellulose Nanofiber Gels Reinforced with Soluble Polysaccharidescitations
- 2022Synthesis and comparative performance study of crystalline and partially amorphous nano-sized SnS2 as anode materials for lithium-ion batteriescitations
- 2022Towards robust synchronous belts: influence of surface characteristics on interfacial adhesioncitations
- 2022Modified Polymer Surfaces: Thin Films of Silicate Composites via Polycaprolactone Melt Fusioncitations
- 2022Pilot-scale modification of polyethersulfone membrane with a size and charge selective nanocellulose layercitations
- 2022Pilot-scale modification of polyethersulfone membrane with a size and charge selective nanocellulose layercitations
- 2021Defect {((WO7)-O-VI)W-4(VI)} and Full {((WO7)-O-VI)W-5(VI)} Pentagonal Units as Synthons for the Generation of Nanosized Main Group V Heteropolyoxotungstatescitations
- 2021Interfacial Adhesion and Mechanical Properties of Wood-Polymer Hybrid Composites Prepared by Injection Moldingcitations
- 2021Grow it yourself composites: delignification and hybridisation of lignocellulosic material using animals and fungicitations
- 2021High-Velocity Stretching of Renewable Polymer Blendscitations
- 2021Bacterial nanocellulose papers with high porosity for optimized permeance and rejection of nm-sized pollutantscitations
- 2020Mechanical properties and electrical surface charges of microfibrillated cellulose/imidazole-modified polyketone composite membranescitations
- 2020Mechanical properties and electrical surface charges of microfibrillated cellulose/imidazole-modified polyketone composite membranescitations
- 2020Plastic to elastic: Fungi-derived composite nanopapers with tunable tensile propertiescitations
- 2020High porosity cellulose nanopapers as reinforcement in multi-layer epoxy laminatescitations
- 2020Plastic to elastic : Fungi-derived composite nanopapers with tunable tensile propertiescitations
- 2018Incorporation of CuO nanoparticles into thin-film composite reverse osmosis membranes (TFC-RO) for antibiofouling propertiescitations
- 2018Better togethercitations
- 2018Adhesion properties of regenerated lignocellulosic fibres towards poly(lactic acid) microspheres assessed by colloidal probe techniquecitations
- 2018Adhesion properties of regenerated lignocellulosic fibres towards poly (lactic acid) microspheres assessed by colloidal probe techniquecitations
- 2016Tough Photopolymers Based on Vinyl Esters for Biomedical Applicationscitations
Places of action
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article
Mechanical properties and electrical surface charges of microfibrillated cellulose/imidazole-modified polyketone composite membranes
Abstract
In the present work, microfibrillated cellulose (MFC) suspensions were produced by high-pressure homogenization and subsequently used to fabricate MFC membranes (C-1) by vacuum filtration followed by hot-pressing. A polyketone (PK50) was chemically modified by Paal-Knorr reaction to graft imidazole (IM) functional groups along its backbone structure. The resulting polymer is referred to as PK50IM80. By solution impregnation, C-1 was immersed in an aqueous solution of PK50IM80 and subsequently hot pressed, resulting in the fabrication of MFC/PK50IM80 composite membranes (C-IMP). Another method, referred to as solution mixing, consisted in adding MFC into an aqueous solution of PK50IM80 followed by vacuum filtration and hot-pressing to obtain MFC/PK50IM80 composite membranes (C-MEZC). C-IMP and C-MEZC were characterized by a wide range of analytical techniques including, X-ray photoelectron spectroscopy, Fourier-transform infrared chemical imaging, scanning electron microscopy, atomic force microscopy, dynamical mechanical analysis, tensile testing as well as streaming zeta potential, and compared to C-1 (reference material). The results suggested that C-IMP possess a more homogeneous distribution of PK50IM80 at their surface compared to C-MEZC. C-IMP was found to possess significantly enhanced Young's modulus compared to C-1 and C-MEZC. The tensile strength of C-IMP was found to improve significantly compared to C-1, whereas C-1 possessed significantly higher tensile index than C-IMP and C-MEZC. Furthermore, the presence of PK50IM80 at the surface of MFC was found to significantly shift the isoelectric point (IEP) of the membranes from pH 2.3 to a maximum value of 4.5 for C-IMP. Above the IEP, C-IMP and C-MEZC were found to possess significantly less negative electrical surface charges (plateau value of -25 mV at pH 10) when compared to C-1 (plateau value of -42 mV at pH 10). Our approach may have implication to broaden the range of filtration applications of MFC-based membranes.