Sökning: "viscose"
Visar resultat 6 - 10 av 18 avhandlingar innehållade ordet viscose.
6. Nonionic surfactants : A multivariate study
Sammanfattning : In this thesis technical nonionic surfactants are studied using multivariate techniques. The surfactants studied were alkyl ethoxylates (AEOs) and alkyl polyglucosides (APGs). The aquatic toxicity of the surfactants towards two organisms, a shrimp and a rotifer, was examined. The specified effect was lethality, LC50, as indicated by immobilisation. LÄS MER
7. Some Aspects on Pulp Pre-treatment Prior to Viscose Preparation
Sammanfattning : Large amounts of carbon disulphide are consumed in the conventional production of viscose. Until a novel, eco-friendly, wood-based process for the production of cellulose textile fibres has been developed and implemented, it is important to try to find ways to improve the conventional viscose process, e.g. LÄS MER
8. From recovery boiler to integration of a textile fiber plant : Combination of mass balance analysis and chemical engineering
Sammanfattning : Modern chemical technology is an efficient tool for solving problems, particularly within the complex environment of the pulp and paper industry, and the combination of experimental studies, mill data and mass balance calculations are of fundamental importance to the development of the industry. In this study various examples are presented, whereby chemical technology is of fundamental importance. LÄS MER
9. Optically pure lactic acid production from lignocellulosic biomass
Sammanfattning : Lactic acid is a platform chemical that can be used for many applications. More recently, optically pure lactic acid—L- or D-lactic acid enantiomers—have been used for the polymerisation to poly-lactic acid (PLA). LÄS MER
10. Decomposition of cellulose xanthate during spinning of viscose in solutions of low acid content
Sammanfattning : .... LÄS MER