Abstract
A method has been developed that permits monitoring of the reaction of basic glass powders with various polyacids during the formation of glass-ionomer dental cements. Decomposition of the calcium aluminosilicate glass is followed via laser-induced emission signals from trace elements introduced into the powder with the aluminum oxide component or from imperfections in the glass matrix. The method that is reported is significantly easier than previously reported methods and does not require the reaction to be quenched. The change in the intensity of the emission bands was correlated with the extent of branching in the side chains of seven polyacids, indicating that the structure of the polyacid affects the rate of decomposition of the glass powders. The polyacids with longer side chains and more branching extract metal ions from the glass powder more efficiently than the conventional polyacids that have reactive carboxylic groups attached uniformly and directly on the polymer backbone.
PDF Article
More Like This
Spectroscopic properties, concentration quenching, and laser investigations of Yb3+-doped calcium aluminosilicate glasses
Yannick Guyot, Alysson Steimacher, Marcos P. Belançon, Antonio N. Medina, Mauro L. Baesso, Sandro M. Lima, Luis H. C. Andrade, Alain Brenier, Anne-Marie Jurdyc, and Georges Boulon
J. Opt. Soc. Am. B 28(10) 2510-2517 (2011)
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy