Search Results - "Köhnke, Tobias"

Wet Spinning of Flame-Retardant Cellulosic Fibers Supported by Interfacial Complexation of Cellulose Nanofibrils with Silica Nanoparticles by Nechyporchuk, Oleksandr, Bordes, Romain, Köhnke, Tobias

“…The inherent flammability of cellulosic fibers limits their use in some advanced applications. This work demonstrates for the first time the production of…”
Get full text

Diffusion in Ionic Liquid–Cellulose Solutions during Coagulation in Water: Mass Transport and Coagulation Rate Measurements by Hedlund, Artur, Köhnke, Tobias, Theliander, Hans

“…This article describes central features of the mass transport during the coagulation in water of cellulose–1-ethyl-3-methyl­imidazoium acetate ([C2mim]­[OAc])…”
Get full text

The challenge of predicting spinnability: Investigating benefits of adding lignin to cellulose solutions in air‐gap spinning by Bengtsson, Jenny, Jedvert, Kerstin, Köhnke, Tobias, Theliander, Hans

“…In this study, the underlying mechanism for improved spinnability when mixing lignin and cellulose in solution was investigated. Co‐processing of lignin and…”
Get full text

Understanding the Inhibiting Effect of Small-Molecule Hydrogen Bond Donors on the Solubility of Cellulose in Tetrabutylammonium Acetate/DMSO by Bengtsson, Jenny, Olsson, Carina, Hedlund, Artur, Köhnke, Tobias, Bialik, Erik

“…Certain ionic liquids are powerful cellulose solvents, but tend to be less effective when small-molecule hydrogen bond donors are present. This is generally…”
Get full text

Identifying breach mechanism during air‐gap spinning of lignin–cellulose ionic‐liquid solutions by Bengtsson, Jenny, Jedvert, Kerstin, Köhnke, Tobias, Theliander, Hans

“…ABSTRACT To be able to produce highly oriented and strong fibers from polymer solutions, a high elongational rate during the fiber‐forming process is…”
Get full text

Regenerated Casein–Nanocellulose Composite Fibers via Wet Spinning by Nechyporchuk, Oleksandr, Köhnke, Tobias

“…Development of sustainable biobased fibers is required to displace their fossil-based counterparts, e.g., in textile, nonwoven, or composite applications…”
Get full text

Revealing pore size distribution in cellulose and lignin-cellulose man-made fibers – effect of draw ratio and lignin content by Bengtsson, Jenny, Johnsson, Erica, Ulmefors, Hanna, Köhnke, Tobias, Maloney, Thaddeus

“…There are limited methods available for measurement of the porosity of cellulose fibers, even more so for obtaining a pore size distribution. Conventional pore…”
Get full text

Mass transport during coagulation of cellulose-ionic liquid solutions in different non-solvents by Hedlund, Artur, Theliander, Hans, Köhnke, Tobias

“…Cellulose can be regenerated from cellulose-ionic liquid (IL) solutions by immersion in water or alcohols. These compounds are potent non-solvents due to their…”
Get full text

Cellulosic nonwovens produced via efficient solution blowing technique by Jedvert, Kerstin, Idström, Alexander, Köhnke, Tobias, Alkhagen, Mårten

“…ABSTRACT The demand for nonwoven materials has increased during the last few years and is expected to increase further due to its use in a broad range of new…”
Get full text

Pre-treatments of pre-consumer cotton-based textile waste for production of textile fibres in the cold NaOH(aq) and cellulose carbamate processes by Määttänen, Marjo, Gunnarsson, Maria, Wedin, Helena, Stibing, Sara, Olsson, Carina, Köhnke, Tobias, Asikainen, Sari, Vehviläinen, Marianna, Harlin, Ali

“…Recycling of textiles is of importance due to the large amount of waste generated from the increasing consumption and use worldwide. Cotton-rich pre-consumer…”
Get full text

Wet Spinning of Chitosan Fibers: Effect of Sodium Dodecyl Sulfate Adsorption and Enhanced Dope Temperature by Nechyporchuk, Oleksandr, Yang Nilsson, Ting, Ulmefors, Hanna, Köhnke, Tobias

“…Production of fibers from nonthermoplastic polymers, such as chitosan, usually requires dissolution with subsequent fiber formation, for instance, via…”
Get full text

Kraft pulp hornification: A closer look at the preventive effect gained by glucuronoxylan adsorption by Köhnke, Tobias, Lund, Kristoffer, Brelid, Harald, Westman, Gunnar

“…Xylan is known to adsorb irreversibly on cellulose and on bleached kraft pulp fibres. This investigation shows that adsorption of birch glucuronoxylan (GX)…”
Get full text

Microstructures of cellulose coagulated in water and alcohols from 1-ethyl-3-methylimidazolium acetate: contrasting coagulation mechanisms by Hedlund, Artur, Köhnke, Tobias, Hagman, Joel, Olsson, Ulf, Theliander, Hans

“…Coagulation of cellulose solutions is a process whereby many useful materials with variable microstructures and properties can be produced. This study…”
Get full text

Revisiting the Dissolution of Cellulose in NaOH as "Seen" by X-rays by Martin-Bertelsen, Birte, Andersson, Erika, Köhnke, Tobias, Hedlund, Artur, Stigsson, Lars, Olsson, Ulf

“…Cotton production is reaching a global limit, leading to a growing demand for bio-based textile fibers produced by other means. Textile fibers based on…”
Get full text

The influence of lignin on the self-assembly behaviour of xylan rich fractions from birch (Betula pendula) by Westbye, Peter, Köhnke, Tobias, Glasser, Wolfgang, Gatenholm, Paul

“…A crude xylan isolate obtained by prehydrolysis and mild alkaline extraction from birch wood chips (Betula pendula), and a carefully delignified xylan fraction…”
Get full text

NMR cryoporometry to study the fiber wall structure and the effect of drying by Östlund, Åsa, Köhnke, Tobias, Nordstierna, Lars, Nydén, Magnus

“…NMR cryoporometry has been used for investigating the porosity changes of bleached wood pulp upon drying. This NMR method follows the same principles as…”
Get full text

Adsorption of cationized barley husk xylan on kraft pulp fibres: influence of degree of cationization on adsorption characteristics by Köhnke, Tobias, Brelid, Harald, Westman, Gunnar

“…A water-soluble (glucurono)arabinoxylan (GAX) was isolated from barley husk using chlorite delignification followed by alkaline extraction and enzymatic…”
Get full text

effect of barley husk arabinoxylan adsorption on the properties of cellulose fibres by Köhnke, Tobias, Pujolras, Carla, Roubroeks, Johannes P, Gatenholm, Paul

“…This study investigates the adsorption of (glucurono)arabinoxylan (GAX) on cellulose fibres and the properties thereof. A water-soluble GAX, from barley husks…”
Get full text

Adsorption of Arabinoxylan on Cellulosic Surfaces: Influence of Degree of Substitution and Substitution Pattern on Adsorption Characteristics by Köhnke, Tobias, Östlund, Åsa, Brelid, Harald

“…This study presents results that show that the fine structure of arabinoxylan affects its interaction with cellulosic surfaces, an important understanding when…”
Get full text

On the dissolution of cellulose in tetrabutylammonium acetate/dimethyl sulfoxide: a frustrated solvent by Idström, Alexander, Gentile, Luigi, Gubitosi, Marta, Olsson, Carina, Stenqvist, Björn, Lund, Mikael, Bergquist, Karl-Erik, Olsson, Ulf, Köhnke, Tobias, Bialik, Erik

“…We have found that the dissolution of cellulose in the binary mixed solvent tetrabutylammonium acetate/dimethyl sulfoxide follows a previously overlooked…”
Get full text