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Showing result 1 - 5 of 119 swedish dissertations matching the above criteria.

2. 1. Mechanisms of Biopolymer Solvation: Development of a two-component ionic liquid solvent system

   Author : Susanne Bylin; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; ionic liquids; solvation; mechanism; xylan; lignin; cellulose; wood components;

   Abstract : Ionic liquids are of potential interest in the processing of lignocellulosic biomass, and/or its components, for the purpose of producing renewable and value-added biomaterials. An understanding of how solvation can be achieved and the way in which the feedstock biopolymers are affected, however, needs to be gained prior to a viable implementation. READ MORE

4. 2. Farm to furan derivatives : Fractionation of agricultural residues and transformation of sugars to chemical building blocks

   Author : Sara Jonsdottir Glaser; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biorefinery; sugar beet pulp; wheat bran; agricultural residue; biomass valorisation; fractionation; bio-based platform chemicals; HMF; levulinic acid; heterogeneous catalysis; whole-cell catalysis;

   Abstract : The transition of industrial production from petrochemistry to a more sustainable economy requires the use of carbon neutral, renewable feedstock, which does not compete with food and feed supplies – by-products of farming and agro-food industry offer this possibility. With a limited range of low-value applications today coupled with the need for maximal utilisation of resources, the by-products of farming can be repurposed as feedstock for biorefineries. READ MORE

5. 3. Lignin-Based Thermosets with Tunable Mechanical and Morphological Properties : A Study of Structure-Property Relationships

   Author : Iuliana Ribca; Mats Johansson; Martin Lawoko; Stephan V. Roth; Mika Sipponen; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Softwood; hardwood; technical lignin; solvent fractionation; allylation; thiol-ene thermosets; thioether linkage; wide-angle X-ray scattering; π-π stacking interactions; Barrträ; lövträ; tekniskt lignin; lösningsmedelsfraktionering; allylering; tiol-en-härdplaster; tioeterbindning; vidvinkelröntgenspridning; π-π staplingsinteraktioner; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : Nowadays, there is an urgent need to decrease our dependence on fossilresources and shift towards the use of renewable resources for advancingsustainable development. Utilizing renewable and bio-based raw materials,such as lignocellulosic biomass, for designing new materials is a promisingapproach to promote this objective. READ MORE

6. 4. Fractionation of hardwood using steam explosion and hydrotropic extraction : Process development for improved fractionation

   Author : Johanna Olsson; Avdelningen för kemiteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydrotropic fractionation; ; Steam explosion; hardwood; sodium xylene sulphonate; Lignocellulosic Biomass; Hydrotropic extraction; Steam explosion; Hardwood; Sodium xylene sulphonate; Lignocellulosic biomass;

   Abstract : The utilisation of biomass instead of fossil resources is an important alternative for the transition into a sustainable society. Biomass, owing to its primary constituents—cellulose, hemicelluloses and lignin—has the potential to replace many products that are produced from fossil resources today, including plastics, textile fibres and fuels. READ MORE

7. 5. Evaluation of two hydrocyclone designs for pulp fractionation

   Author : Rasmus Andersson; Mikael Lindström; Per Engstrand; Kristofer Gamstedt; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

   Abstract : The process conditions and fractionation efficiency of two hydrocyclone designs, a novel and a conventional conical design, were evaluated. The novel design comprised a modified inlet section, where the pulp suspension had to pass a narrow ring-shaped opening, and a very compact fractionation zone. READ MORE