| 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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Sixta, Herbert
Aalto University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2023Polymer-Based n-Type Yarn for Organic Thermoelectric Textilescitations
- 2023Development of cellulose films by means of the Ioncell® technology, as an alternative to commercial filmscitations
- 2021Exploring digital image correlation technique for the analysis of the tensile properties of all-cellulose compositescitations
- 2021Effect of single-fiber properties and fiber volume fraction on the mechanical properties of Ioncell fiber compositescitations
- 2021Fast and quantitative compositional analysis of hybrid cellulose-based regenerated fibers using thermogravimetric analysis and chemometricscitations
- 2021Process-dependent nanostructures of regenerated cellulose fibres revealed by small angle neutron scatteringcitations
- 2021The fiber-matrix interface in Ioncell cellulose fiber composites and its implications for the mechanical performancecitations
- 2020Close Packing of Cellulose and Chitosan in Regenerated Cellulose Fibers Improves Carbon Yield and Structural Properties of Respective Carbon Fiberscitations
- 2019Water-induced crystallization and nano-scale spinodal decomposition of cellulose in NMMO and ionic liquid dopecitations
- 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
- 2016Deformation mechanisms in ionic liquid spun cellulose fiberscitations
- 2016Ionic Liquids for the Production of Man-Made Cellulosic Fiberscitations
- 2016Wood biorefinery based on γ-valerolactone/water fractionationcitations
- 2016Wood biorefinery based on γ-valerolactone/water fractionationcitations
- 2015Ioncell-Fcitations
- 2015Ioncell-F:A High-strength regenerated cellulose fibre
- 2015Purification and characterization of kraft lignincitations
- 2015Ionic liquids for the production of man-made cellulosic fibers:Opportunities and challengescitations
- 2015High-Strength Composite Fibers from Cellulose-Lignin Blends Regenerated from Ionic Liquid Solutioncitations
- 2014Switchable Ionic Liquids as Delignification Solvents for Lignocellulosic Materialscitations
- 2010Evaluation of experimental parameters in the microbond test with regard to lyocell fiberscitations
Places of action
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article
Purification and characterization of kraft lignin
Abstract
<p>To upgrade the utilization of kraft lignin (KL) for high-performance lignin-based materials (e.g., carbon fiber), the purity, molecular mass distribution (MMD), and thermal properties need to be improved and adjusted to target values. Therefore, different methods, such as ultrasonic extraction (UE), solvent extraction, dialysis, and hot water treatment (HWT), were applied for the purification of KL. The chemical and thermal properties of purified lignin have been characterized by nuclear magnetic resonance, Fourier transform infrared, gel permeation chromatography, elemental analysis, differential scanning calorimetry, and thermogravimetric analysis. The lignin fractions obtained by UE with ethanol/acetone (E/A) mixture (9: 1) revealed a very narrow MMD and were nearly free of inorganic compounds and carbohydrates. Further, the E/A-extracted lignin showed a lower glass transition temperature (T-g) and a clearly detectable melting temperature (T-m). Dialysis followed by HWT at 220 degrees C is an efficient method for the removal of inorganics and carbohydrates; however, lignin was partly forming condensed structures during the treatment.</p>