ISSN:
1573-4986
Keywords:
proton dissociation
;
weak polyacids
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The study of the proton dissociation process of weak polyacids (eg α carboxylic poly(monoprotic)acid) is based on the knowledge of the change in electrostatic free energy, G(el), as a function of the variation of the number of charges on the polymer chain. The original treatment proposed by Manning can be used to describe the proton dissociation process of weak poly(monoprotic)acids, in the absence of pH-induced conformational transitions. In order to describe the alpha dependence of pKa of weak co-poly(monoprotic)acids containing two different acidic groups in different amounts along the polymer chain, a simple modification of the model is proposed. Abbreviations used: Due to the difficulty of using non-ASCI characters in the main text, we have used the following abbreviations: G(el) Gel 10-pH 10-pH pKa pKa alpha α alphan αn dG(el)/dalpha δGel/δα KA and KB KA and KB CA and CB CA and CB βA and βB βA and βB δpK δpK §max ξmax
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018515905407
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