Structure formation in solution : ionic polymers and colloidal particles
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Bibliographic Information
Structure formation in solution : ionic polymers and colloidal particles
Springer, c2005
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National Institutes of Natural Sciences Okazaki Library and Information Center図
428.3/St9108787721
Note
Includes bibliographical references and index
Description and Table of Contents
Description
1. 1 Macroionic Systems and the Scope of the Book Inthepresentmonograph,wewilldiscussionicpolymersolutionsandcolloidal dispersions. When these substances are dissolved into a solvent, they produce ionicspecies havinglargemolecularweightsandtheir counterions. We knowa variety of naturally occurring ionic polymers and chemically synthesizedc- pounds. Examples of the former are nucleic acids and some proteins, which playanimportantroleinbiologicalsystems. Examplesofsyntheticionicpo- mers are polyacrylic acid (PAA), polystyrenesulfonic acid (PSS) and poly- lylamine (PAAm). PAAisahighpolymer,inwhichmacrylicacidmoleculesCH =CH(COOH) 2 arelinearlypolymerizedby covalent bonds. Thenumber mis calledthe degree 3 of polymerization and is usually of the order of 10 . When PAA is dissolved in a dissociating solvent like water, anionic macroions and counterions are produced. In the following scheme, the counterions are protons but they may + be metal cations such as Na : ? ? ? ? ?CH ? CH? ?CH ? CH? 2 2 + ? ? ? ? | ? | + mH ? COOH COO m m PAA PAA anion Counterions. PAAm is a cationic polymer and dissociates into PAAm cations and anionic counterions as shown below: ? ? ? ? ?CH ? CH? ?CH ? CH? 2 2 ? ?
? ? ? | +mHCl ? | +mCl + CH ?NH CH ?NH 2 2 2 3 m m PAAm PAAm cation Counterions. 2 1 Introduction + ? In the case of NaCl, it dissociates into Na and Cl , which both have low molecular weights. On the other hand, PAA anions and PAAm cations have 3 highmolecularweights. Ifmis10 ,onepolymerion(macroion)hasananalyt- 3 + icalchargenumberZ of10 ,whichisexceedinglylargerthan1forNa .
Table of Contents
Effective Interactions between Macroions 1.- Dilute Solutions of Flexible and Spherical Ionic Polymers.- Colloidal Dispersions.- Kikuchi-Kossel Line Analysis on Colloidal Crystals.- Effective Interactions between Macroions 2.- Viscometric Properties of Dilute Ionic Polymer Solutions and Colloidal Dispersions.- Phase Transitions by Computer Simulation.- Further Problems of Interparticle Interaction.
by "Nielsen BookData"