| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Stana Kleinschek, Karin
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 20233D-Printed Anisotropic Nanofiber Composites with Gradual Mechanical Propertiescitations
- 2022Organic acid cross-linked 3D printed cellulose nanocomposite bioscaffolds with controlled porosity, mechanical strength, and biocompatibilitycitations
- 2022Solid Phase Peptide Synthesis on Chitosan Thin Filmscitations
- 2021High oxygen barrier chitosan films neutralized by alkaline nanoparticlescitations
- 2021Design, Characterisation and Applications of Cellulose-Based Thin Films, Nanofibers and 3D Printed Structures
- 2020Design of stable and new polysaccharide nanoparticles composite and their interaction with solid cellulose surfacescitations
- 2020Defluorination of Polytetrafluoroethylene Surface by Hydrogen Plasmacitations
- 2019Novel Chitosan–Mg(OH)2-Based Nanocomposite Membranes for Direct Alkaline Ethanol Fuel Cellscitations
- 2019Affinity of Serum Albumin and Fibrinogen to Cellulose, Its Hydrophobic Derivatives and Blendscitations
- 2018Recent developments in surface science and engineering, thin films, nanoscience, biomaterials, plasma science, and vacuum technologycitations
- 2018Modification of cellulose thin films with lysine moietiescitations
- 2017Interaction of tissue engineering substrates with serum proteins and its influence on human primary endothelial cellscitations
- 2017Environmentally friendly procedure for in-situ coating of regenerated cellulose fibres with silver nanoparticlescitations
- 2017Reactive Maleimido Dextran Thin Films for Cysteine-Containing Surfaces Adsorbing BSAcitations
- 2017Synthesis and film formation of furfuryl- and maleimido carbonic acid derivatives of dextrancitations
- 2017Surface engineering of TiO2-MWCNT nanocomposites towards tuning of functionalities and minimizing toxicitycitations
- 2017Modificiranje poliamidnega pletiva z različnimi zeoliticitations
- 2015Cellulose thin films from ionic liquid solutions
- 2014Preparation of PDMS ultrathin films and patterned surface modification with cellulosecitations
- 2014A study on the interaction of cationized chitosan with cellulose surfacescitations
- 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
- 2012Physicochemical properties and bioactivity of a novel class of cellulosicscitations
- 2012Etching of polyethylene terephthalate thin films by neutral oxygen atoms in the late flowing afterglow of oxygen plasmacitations
- 2012Adsorption of carboxymethyl cellulose on polymer surfacescitations
- 2012Synthesis of magnetic iron oxide particlescitations
- 2012Uv Polymerization of Poly (N-Isopropylacrylamide) Hydrogel
- 2012Characterization of viscose fibers modified with 6-deoxy-6-amino cellulose sulfatecitations
- 2012The Plasma Polymerisation Process For The Deposition Of Amino-Containing Film On The Poly(Ethylene Terephthalate) Dressing-Layer For Safe Wound-Healing
- 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
- 2011Protonation behavior of 6-deoxy-6-(2-aminoethyl)amino cellulosecitations
- 2009Electrokinetic properties of polypropylene-layered silicate Nanocomposite fiberscitations
- 2008Carboxyl groups in pre-treated regenerated cellulose fibrescitations
- 2008Adsorption of chitosan on PET films monitored by quartz crystal microbalancecitations
- 2008Topochemical modification of cotton fibres with carboxymethyl cellulosecitations
- 2007Nanofilled polypropylene fibres
- 2007Influence of surface energy on the interactions between hard coatings and lubricantscitations
- 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
| Organizations | Location | People |
|---|
article
Determination of dissociable groups in natural and regenerated cellulose fibers by different titration methods
Abstract
<p>Different titration methods were applied with the purpose to determine the dissociation properties of a natural (cotton) and regenerated (viscose, modal and lyocell) cellulose fibers. Potentiometric and conductometric titration were used to determine the content of acidic groups. pK values were determined by potentiometric titration. Polyelectrolyte adsorption was used for surface and total charge determination, and to obtain information about charge location and accessibility of charged groups. It was found that the average content of acidic groups is higher in cotton fibers than in regenerated fibers. The fiber charge of cotton is due to the dissociation of two type of acidic groups, one with pK ≈3.5 and the other with pK ≈5.5. In regenerated fibers there is only one type of acidic groups (pK ≈3.5). The pK value of the stronger acid is typical for carboxyl group in uronic acids. The polyelectrolyte adsorption indicates that most of the carboxyl groups are located in an inner region of all cellulose samples (cotton and regenerated fibers). It is concluded that titration methods are powerful tools for monitoring the content, strength, and distribution of acidic groups, as well as the total charge of natural and regenerated cellulose fibers. The three methods give similar results on all analyzed samples and show good repeatability. The results of investigation make it quite clear that combination of all titrations yields relevant information about content and strength of acidic groups in both natural and regenerated cellulose fibers used in the manufacture of textiles.</p>