STUDIES IN THE SETTING OF POLYELECTROLYTE CEMENTS .1. EFFECT OF METHANOL ON ZINC POLYCARBOXYLATE

被引：9

作者：

ANSTICE, HM ^{[1
]}

NICHOLSON, JW ^{[1
]}

BUBB, NL ^{[1
]}

机构：

[1] UNIV LONDON KINGS COLL, SCH MED & DENT, DENT BIOMAT UNIT, LONDON WC2R 2LS, ENGLAND

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 1994年 / 5卷 / 03期

关键词：

D O I：

10.1007/BF00053340

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Specimens of zinc polycarboxylate dental cement have been prepared with methanol or methanol/water mixtures as solvent. Such cements set at a reduced rate compared with those activated by water alone, and final materials are about 50% weaker in compression. Methanol reduces the dielectric constant of the solvent system compared with water alone and such a reduction inhibits ionic reactions and causes the polyacid to adopt a coiled configuration in solution. Both of these effects are assumed to contribute to the observed reduction in setting rate. The reduction in setting rate was confirmed using infrared spectroscopy.

引用

页码：176 / 179

页数：4

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