Sökning: "cellulose reactivity"
Visar resultat 1 - 5 av 22 avhandlingar innehållade orden cellulose reactivity.
1. Improvement on cellulose accessibility and reactivity of different wood pulps
Sammanfattning : Cellulosans tillgänglighet och reaktivitet är nyckelparametrar vid framställning av regenererad cellulosa och cellulosaderivat. Det är välkänt att på grund av cellulosans kristallina struktur är tillgängligheten begränsad för lösningsmedel och olika reagens. LÄS MER
2. Dissolving pulp : Multivariate Characterisation and Analysis of Reactivity and Spectroscopic Properties
Sammanfattning : Various chemical properties can be used to characterise dissolving pulp. The quality of the pulp must be carefully controlled to ensure that it meets the requirements for its intended use and the further processes to be applied. LÄS MER
3. Experimental study of alkalinisation of cellulose in industrial relevant conditions
Sammanfattning : Mercerisation of cellulose pulp with a solution of NaOH is the first step of manufacturing cellulose-based value-added products, e.g. viscose fibres and cellulose ethers. During this process, cellulose transforms into a swollen crystalline structure, alkali cellulose (Na-Cell). LÄS MER
4. Characterization of cellulose pulps and the influence of their properties on the process and production of viscose and cellulose ethers
Sammanfattning : Today’s market offers an ever-increasing range of cellulose pulps (derivative pulps) made fromvarious wood types through different delignification processes. Each pulp segment has its uniquecharacteristics, which makes it difficult for the producer of cellulose derivatives to choose the mostsuitable pulp for optimum processability and product quality. LÄS MER
5. Lignin polysaccharide networks in softwood and chemical pulps : characterisation, structure and reactivity
Sammanfattning : The chemical interactions between the main wood components i.e., cellulose, hemicelluloses and lignin are of fundamental importance for understanding the chemical aspects of wood formation and its reactivity during fibre processing e.g during chemical pulping of wood. LÄS MER