Microdomains in Polymer Solutions - Dubin, Paul

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Résumé :
In the first half of this century, great strides were made in under? standing the behavior of polymers in dilute solutions or in the solid state. Concentrated solutions, on the other hand, were commonly regarded as mainly of interest to practitioners, being too complex for the rigorous application of statistical theory. Given the preoccupation with the isolated polymer molecule and the attendant focus on the state of infinite dilution, it is not surprising that aggregation, and inter-polymer associ? ation in general, was the bugaboo of experimentalists. These attitudes have changed remarkably over the last few decades. The application of sealing theory to polymer solutions has stimulated investigation of the semi-dilute state, and the region between infinite dilution and swollen gel is no longer perceived as terra incognita. New techniques, such as dynamic light scattering, have proven to be of much value in such investigations. At the same time, it has become clear that consideration of strong inter- and intra-polymer forces, superimposed on the familiar description of the statistical chain, is prerequisite to the application of polymer science to numerous systems of interest. Para? mount among these, of course, are biopolymers, their complexes and assemblies. The isolated random coil must be viewed as tl rarity in nature.

Sommaire:
I. Intramolecular Micelles.- 1. Microdomains in Hydrophobic Polyacids.- 2. Hydrophobic Domains of Maleic Acid Copolymers.- 3. L-Phenylalanine Oligopeptides Grafted Poly(acrylic acid). Evidence of Specific Interactions of Ethidium Bromide and Acridine Orange with Hydrophobic Microdomains.- 4. (Acid-Base)-Dependent Globular Structures of Partially N-Alkylated Poly(Tertiary Amines).- 5. Hydrophobic Region of Poly(styrenesulfonic acid) as Studied by Electric Dichroism Measurements.- II. Association, Aggregation and Gelation.- 6. Association and Complex Formation in Stereoregular PMMA Solutions.- 7. Dilute Solutions of Poly(vinylbutyral): Characterization of Aggregated and Non-Aggregated Solutions.- 8. Gelation Accompanying Crystallization from Dilute Solutions: Some Guiding Principles.- 9. Aggregation, Phase Behavior and the Nature of Networks Formed by Some Rod-Like Polymers.- III. Ordering in Polyelectrolyte Solutions.- 10. Polyelectrolytic Aspects of Conformational Transitions and Interchain Interactions in Ionic Polysaccharide Solutions: Comparison of Theory and Microcalorimetric Data.- 11. Studies on Dilute Solutions of Rodlike Macroions III. Integrated Intensity and Photon Correlation Light Scattering Investigation of Association.- 12. Studies of PSM in Aqueous Solution Near the Overlap Concentration.- IV. Microdomains in Nonaqueous Media.- 13. Ion Distribution and Polyion Conformation Displayed by Amphiphilic Polyacids in Aqueous and Organic Media.- 14. Association of the Ion Pair End-Groups of Halato Telechelic Polymers in Nonpolar Solvents.- 15. On the Microenvironment of Soluble and Cross-Linked Polymers.- V. Ordered Polymer-Ligand Complexes.- A. Systems with Biological Components.- 16. Interaction Between DNA and Dodecylpyridinium Cation.- 17. Ordered Conformation of Poly(L-Lysine) and its Homologs in Anionic Surfactant Solutions.- 18. Structural Complexes of Cationic Polysoap-Phospholipid.- 19. High-Sensitivity Differential Scanning Calorimetry of Polymer-Phospholipid Mixtures.- B. Synthethic Systems.- 20. Fluorescence Probe Studies of the Aggregation State of Surfactants in Aqueous Polymer Solutions.- 21. Viscometric Investigation of Complexes Between Polyethyleneoxide and Surfactant Micelles.- 22. Complex Formation Between Ionic Surfactants and Polymers in Aqueous Solution.- 23. Complexes of Cationic Polymers and Anionic Surfactants.- 24. Cooperative Interaction of Anionic Dyes with Imidazole-Containing Polymers.- 25. Electron Transfer Process in the Domain Formed by Intermacromolecular Complexes.- Contributors.