The effects of self-assembly in solutions of polyelectrolytes
Limberger, Roman E.
FacultiesFakultät für Naturwissenschaften
LicenseStandard (Fassung vom 03.05.2003)
The PhD thesis "The Effects of Self-Assembly in Solutions of Polyelectrolytes" written by Roman E. Limberger contains the introduction, the literature review, two original parts, the consequences, the acknowledgements, the list of references and four appendices. In the introduction the relevance of the present thesis is explained. The literature review is divided into two parts. The first part is dedicated to the consideration of the main theoretical models and the results in the study of a liquid-crystalline ordering in solutions of rigid polyelectrolytes. Some relevant experimental results are also reviewed. The second part is devoted to the analysis of the achievements in the study of microstructure formation in solutions of associating polyelectrolytes. Chapter 2 (the first original part) is dedicated to the study of the liquid-crystalline ordering in solutions of rigid rod-like polyelectrolytes. The presented theory accounts for many-body electrostatic interactions between the charges of macroions and counterions in the polyelectrolyte regime of the solution. It is found that many-body Coulomb interactions favour nematic ordering of the like-charged rods. The corresponding phase diagrams are built at the different values of the order parameter. Chapter 3 (the second original part) brings the theory of the microphase separation in solutions of associating polyelectrolytes. It is shown that besides macrophase separation, physical gel formation and the possibility of stabilization of optimal-size spherical clusters, there are areas of stability of the infinitely long cylindrical clusters, packed with the symmetry of the hexagonal lattice, and the lamellae. The corresponding phase diagrams are also presented in Chapter 3. The main results of the thesis are summarized in the consequences. Some important calculations can be found in the appendices.
Subject HeadingsPolyelektrolyt [GND]
Segregation <Technik> [GND]