| 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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Ribitsch, Volker
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2018Optimization of the Catalyst and Membrane Performance by addition of various Additives for the alkaline Direct Ethanol Fuel Cell
- 2015Cellulose thin films from ionic liquid solutions
- 2013Functional patterning of biopolymer thin films using enzymes and lithographic methodscitations
- 2013Chitosan-Silane Sol-Gel Hybrid Thin Films with controllable Layer Thickness and Morphologycitations
- 2013Comparison study of TEMPO and phthalimide-N-oxyl (PINO) radicals on oxidation efficiency toward cellulosecitations
- 2013Chemical modification and characterization of poly(ethylene terephthalate) surfaces for collagen immobilizationcitations
- 2012Adsorption of carboxymethyl cellulose on polymer surfacescitations
- 2011Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulosecitations
- 2011Deposition of silicon doped and pure hydrogenated amorphous carbon coatings on quartz crystal microbalance sensors for protein adsorption studiescitations
- 2009Electrokinetic properties of polypropylene-layered silicate Nanocomposite fiberscitations
- 2008Adsorption of chitosan on PET films monitored by quartz crystal microbalancecitations
- 2005Determination of the accessible carboxyl and amino end groups in structurally modified PA 6 using titration methods
- 2004Determination of dissociable groups in natural and regenerated cellulose fibers by different titration methodscitations
- 2004Determining the Surface Free Energy of Cellulose Materials with the Powder Contact Angle Methodcitations
- 2003Characterisation of modified polypropylene fibrescitations
- 2002Modifikacije PA 6 z NH3 plazmo
- 2000Analiza povrsine vlaken z mikroskopijo atomskih sil (AFM)
Places of action
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article
Determining the Surface Free Energy of Cellulose Materials with the Powder Contact Angle Method
Abstract
<p>Different treatment processes such as alkaline washing, bleaching, and slack-mercer ization are used to improve the sorption characteristics of cellulose fibers. The differences between the sorption properties of cellulose fibers are measured with tensiometry, and their sorption velocities are measured with liquids of different polarities. From those measurements, contact angles are determined using the Washburn equation. The surface free energy of the cellulose fibers is determined from contact angle data obtained with the Owens-Wendt-Rabel-Kaeble approximation. Results show that among these treatments, slack-mercerization produces the lowest contact angle and the highest surface free fiber energy, and has therefore the largest influence on sorption ability. Viscose fibers (raw and treated) have the lowest contact angle and the highest surface free energy, and are the most hydrophilic compared to lyocell and modal fibers. This is explained by their crystalline structure and the accessibility of their surface groups to polar liquids.</p>