Search for dissertations about: "cationic polyelectrolyte"

Showing result 11 - 15 of 45 swedish dissertations containing the words cationic polyelectrolyte.

2. 11. On the interactions in cellulose systems : surface forces and adsorption

   Author : Monika Österberg; KTH; []
   Keywords : cellulose; hemicellulose; xylan; lignin; surface forces; adsorption; polyelectrolyte; SFA; AFM; ESCA; Langmuir-Blodgett films; chitosan; steric forces; bridging; adhesion;

   Abstract : In this thesis the interactions in cellulose systems havebeen studied with emphasis on surface forces and adsorptionphenomenon. The study was limited to surfaces and polymers ofinterest for papermaking. READ MORE

4. 12. Surface interactions and adsorbate structures : An atomic force microscopy study

   Author : Goran Bogdanovic; KTH; []
   Keywords : atomic force microscope; AFM; cantilever calibration; colloidal probe; surface force; force curve; friciton; hydrophobic; adhesion; roughness; multilayer; silica; cellulose; cationic polyelectrolyte; MAPTAC;

   Abstract : Atomic force microscopy, AFM, was used for studying somecurrent topics in the field of surface and colloid science. Themain topics addressed in this thesis were: the nature of thelong-range attraction between hydrophobic surfaces; slidingfriction behavior for microscopic contacts; and interfacialstructuring of polyelectrolyte-nanoparticle multilayerfilms. READ MORE

5. 13. Phase Equilibria and Structures of Oppositely Charged Polymers and Surfactants in Water

   Author : Anna Svensson; Fysikalisk kemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; self diffusion; PFG NMR; hexagonal; cubic Pm3n; liquid crystals; SAXS; polymer; counterion; complex; polyelectrolyte; surfactant; Monte Carlo simulations; Physical chemistry; Fysikalisk kemi;

   Abstract : A new approach to the study of aqueous mixtures of oppositely charged polymers and surfactants has been introduced. Pure polyion-surfactant ion complex salts have been synthesized and used as the point of departure. The elimination of the simple ions reduces the number of components in the mixtures, thus greatly simplifying the system. READ MORE

6. 14. Theoretical and Experimental Studies of Polymer Adsorption and Polymer Mediated Interactions

   Author : Fei Xie; Beräkningskemi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polyelectrolyte; Adsorption; Colloid; Polymer; Dispersion; Interation; Ellipsometry; Monte Carlo Simulation; Classical Density Functional Theory;

   Abstract : Polyelectrolyte adsorption and polymer mediated interactions in different colloidal polymer systems have been studied in this work. Theoretical methods and experimental techniques are combined, in order to obtain more general reliable results, as well as a deep understanding of the molecular mechanisms that are responsible for the observed behaviors. READ MORE

7. 15. Strategies for Renewable Barriers with Enhanced Performance

   Author : Anas Ibn Yaich; Ulrica Edlund; Ann-Christine Albertsson; Monika Österberg; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood hydrolysate; xylan; birch; layered silicates; oxygen barrier; packaging; film; coating; reductive amination; chain-extension; cationic cellulose; polyelectrolyte complexes; hemicellulose; vedhydrolysat; xylan; björk; silikat; syrgasbarriär; förpackningar; film; bestrykning; reducerande aminering; kedjeförlängning; katjonisk cellulosa; polyelektrolytkomplex; hemicellulosa; Fiber- och polymervetenskap; Fibre and Polymer Science;

   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