Search for dissertations about: "polyion"
Showing result 1 - 5 of 10 swedish dissertations containing the word polyion.
-
1. Charged Polymers at Spherical Surfaces
Abstract : Two separate topics in the area of colloidal chemistry have been investigated by the use of molecular modeling: the structural properties of polyion?macroion complexes and of diblock polyampholyte brushes. The main results were obtained by the use of Monte Carlo simulation in the framework of the primitive model, and in the case of polyampholyte brushes the simulation results were also complemented by lattice mean-field calculations. READ MORE
-
2. Interfacial Properties of Biomacromolecular Model Systems: Surface Forces and Nanotribology
Abstract : The nanotribology, adhesion and related interfacial properties of biomacromolecular systems have been studied. The aim was to elucidate the role of physisorbed and chemically grafted bio-polymers implicated as mediators for cellulose based processing and material design. READ MORE
-
3. Environmentally Responsive Surface Coatings of Polyion-Surfactant Ion Complex Salts
Abstract : Complexes formed between oppositely charged polyions and surfactant ions are known to have very rich phase behaviour in bulk solution. The work in this thesis investigates the possibilites of using such complexes as surface coatings. READ MORE
-
4. Phase Behavior and Solution Properties of Aqueous Polyion-Surfactant Ion Systems
Abstract : Polyelectrolytes and oppositely charged surfactants interact through attractive electrostatic forces, which in many cases lead to phase separation already at low total concentrations. During the past 10-15 years investigations of these systems have been simplified through the use of complex salts that consist of surfactants with polymeric counterions in a 1:1 charge stoichiometry (no excess simple counterions present). READ MORE
-
5. Controlling Structure and Water Miscibility of Polyion - Surfactant Ion Complex Salts
Abstract : The interaction between poylions and oppositely charged surfactant ions has been investigated. This has been done by using the pure complex salt (polyion + surfactant ion) as a point of departure. Different parameters of the complex salt have been varied in a systematic way and the effect on structure and water miscibility has been investigated. READ MORE