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Showing result 1 - 5 of 23 swedish dissertations matching the above criteria.

2. 1. Cellulose nanofibril materials with controlled structure : the influence of colloidal interactions

   Author : Andreas Fall; Lars Wågberg; Anna Finne Wistrand; Paul Gatenholm; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Colloidal stability; cellulose nanofibrils; nanofibers; nanostructured materials; biocomposite; DLVO; gel;

   Abstract : Nanoparticles are very interesting components. Due to their very large specific surface area they possess properties in between molecules and macroscopic materials. In addition, a material built up of hierarchically assembled nanoparticles could obtain unique properties, not possessed by the nanoparticles themself. READ MORE

4. 2. Modeling colloidal nanoparticles: From growth to deposition

   Author : Joakim Löfgren; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; gold; DLVO; thermodynamics; van der Waals; density functional theory; modeling; deposition; dispersive interactions; anisotropic; colloidal nanoparticles; nanorods;

   Abstract : In recent decades metal nanoparticles (NPs) have been the subject of intense research. The interest stems from the NPs physicochemical properties that can be conveniently tuned through, e.g., their size, shape or composition. READ MORE

5. 3. Some aspects on the physical chemistry of kraft lignins in aqueous solutions : Theoretical considerations and practical implications

   Author : Magnus Norgren; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; kraft pulping; kraft lignin; phenolic groups; dissociation; pKa; molecular weight; temperature; ionic strength; pOH; polydispersity; coagulation; Poisson-Boltzmann; DLVO; Chemistry; Kemi;

   Abstract : .... READ MORE

6. 4. Force measurements using scanning probe microscopy : Applications to advanced powder processing

   Author : Anders Meurk; KTH; []
   Keywords : atomic force microscope; AFM; SPM; van der Waals interaction; DLVO-theory; surface forces; colloidal probe; force curve; friction; adhesion; stick-slip; cantilever; calibration; spring constant; silicon nitride; iron; silica;

   Abstract : The object of this thesis is to apply scanning probemicroscopy (SPM) to the field of advanced powder processing.Measurement of interparticle surface forces at conditionsrelevant to ceramic processing has been performed together withthorough studies of powder friction. READ MORE

7. 5. The impact of groundwater chemistry on the stability of bentonite colloids

   Author : Sandra Garcia Garcia; Mats Jonsson; Per Claesson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nuclear chemistry; Kärnkemi;

   Abstract : I det svenska djupförvaret för kärnbränsle ska kompakterad bentonit användas som barriär mellan kopparkapslar med utbränt kärnbränsle och berget. I kontakt med vattenförande sprickor kan bentonitbarriären under vissa omständigheter avge montmorillonitkolloider. READ MORE