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Investigations on the dissociation behaviour of hydrolyzed alternating copolymers of maleic anhydride and propene—I. Potentiometric titrations

✍ Scribed by Steffi Reinhardt; Volker Steinert; Kirsten Werner

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 384 KB
Volume: 32
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(96)00028-6

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✦ Synopsis

The potentiometric behaviour of hydrolyzed copolymers of maleic anhydride and propene was studied as a function of added salt (LICI, NaCI, KCI, CaCI?). The first and second apparent ionization values p&n and p&l obtained by the classical interpretation were found to depend on the ionic strength and the counterion, respectively. The influence of the two configurations of the succinic moieties causing four dissociation constants is discussed. The effect of added salt was observed to be the greatest in the presence of CaCI:. Hence the addition of CaCI? enables determination of the concentration of other copolymers of maleic anhydride obtained from the neutralisation of the second carboxylic group.

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