Search for dissertations about: "magnetic cellulose"

Showing result 11 - 15 of 36 swedish dissertations containing the words magnetic cellulose.

  2. 11. Alternative Routes to Highly Dispersed Cobalt Ferrite Nanocomposites

    Author : Richard T. Olsson; Ulf W. Gedde; Mikael Surifvars; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aqueous precipitation; cobalt ferrite; nanoparticles; synthesis; size distribution; silane silsesquioxane; epoxy; nanocomposites; magnetic cellulose; Polymer chemistry; Polymerkemi;

    Abstract : .... READ MORE

  4. 12. The relation between the supramolecular structure of cellulose and its hydrolysability

    Author : Ausra Peciulyte; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose I; SHG; Cellulases; CARS; Imaging; Trichoderma reesei; MPEF; CP MAS 13C-NMR; Secretomics;

    Abstract : The liberation of fermentable sugars from cellulosic biomass during enzymatic hydrolysis is often incomplete. One of the factors limiting the efficiency of enzymatic hydrolysis is the structural properties of cellulose. READ MORE

  5. 13. Structural Elements in Native Celluloses

    Author : Kristina Wickholm; KTH; []
    Keywords : cellulose I; accessible fibril surfaces; inaccessible fibril surfaces; para-crystalline cellulose; fibril aggregates; CP MAS 13C-NMR spectroscopy; spectral fitting; PCA; PLS;

    Abstract : In this thesis, a schematic model for the structure ofaggregated cellulose I fibrils is proposed. The model consistsof a crystalline fibril core surrounded by less orderedcellulose forms. These cellulose forms are fibril surfacesaccessible to water, fibril surfaces inaccessible to water andpara-crystalline cellulose. READ MORE

  6. 14. Nanocomposites made from nanoporous cellulose fibre

    Author : Anna Svensson; Lars Wågberg; Eva Malmström Jonsson; Gunnar Westman; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis explores how to use the dry nanoporous structure of cellulosic fibres in new types of composite materials. A large effort was also given on how to correctly characterize the structure of fibres where the wet structure has been preserved also in the dry state. READ MORE

  7. 15. Chemical Functionalization and Characterization of Cellulosic Materials

    Author : Hanna de la Motte; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Nuclear magnetic resonance; Crosslinking; High bulk networks; Cotton linters; Cationization; Nanocrystalline cellulose; Softwood kraft pulp; Characterization;

    Abstract : Polysaccharides are the most abundant biopolymers produced in nature and belong, together with proteins and nucleic acids, to the main components of life. Polysaccharides are polyhydroxylic polymers that can be functionalized by a wide selection of chemical reactions, and modifications of these biopolymers are applicable in the development of new materials. READ MORE