Search for dissertations about: "wood polyelectrolyte"
Showing result 1 - 5 of 16 swedish dissertations containing the words wood polyelectrolyte.
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1. Polyelectrolyte Complexes : Their Characterization and use for Modification of Wood Fibre Surfaces
Abstract : For economical reasons filler particles and less expensive fibre raw materials are more frequently used in papermaking. This influences the mechanical properties of the formed papers in a negative way and it is therefore necessary to add strength-enhancing agents to the papermaking furnish. READ MORE
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2. Formation and properties of polyelectrolyte multilayers on wood fibres : influence on paper strength and fibre wettability
Abstract : The work in this licentiate thesis examines the adsorption of polyelectrolyte multilayers (PEM) onto wood fibres as a new way to influence the properties of the fibre surfaces and hence the fibres. Fundamental aspects of PEM formation on wood fibres have been studied, and discussed in terms of paper strength and wood fibre wettability. READ MORE
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3. The effects of cellulosic fiber charges on polyelectrolyte adsorption and fiber-fiber interactions
Abstract : The surface charges of cellulosic fibers contribute to several papermaking operations that influence the manufacture and final properties of paper. This thesis investigates the effect of the surface charges on wet-end chemistry, e.g. READ MORE
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4. Appropriate conditions for polyelectrolyte titration to determine the charge of cellulosic fibers
Abstract : The polyelectrolyte titration method has been developed overthe years in order to determine the surface charge ofcellulosic fibers. The conditions have been varied depending onthe author. READ MORE
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5. Strategies for Renewable Barriers with Enhanced Performance
Abstract : Forest biomass is expected to play an increasingly important role in tomorrow´s global bio-economy as one of the main renewable sources of materials, chemicals and energy. In the framework of the biorefinery concept, the forestry industry is looking for new processes to utilize several fractions in the biomass (cellulose, hemicelluloses, lignin etc. READ MORE