✦ LIBER ✦

The nature of the zinc polycarboxylate cement matrix

✍ Scribed by Wilson, Alan D.

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 367 KB
Volume: 16
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.820160503

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✦ Synopsis

Abstract

The matrix of a stoichiometric zinc polycarboxylate cement has been shown to be identical with zinc polycarboxylate salt, which consists principally of neutralized carboxylate groups with a few free acid groups. When excess zinc oxide is present, as in practical cements, there are no free acid groups present. There is no evidence for the formation of a chelate. Both salt and cement matrices are amorphous. The formation of the salt appears to control timedependent changes in the consistency of the cement pastes.

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