Manganese tetraoxide based polyalkenoate cements.

Abstract

Polyalkenoate cements resulting from reaction between Mn3O4 with acrylic acid and poly(acrylic acid) have been analyzed by Fourier transform infrared spectroscopy (FTIR) and x-ray photoelectron spectroscopy (XPS). This reaction was carried out with and without aluminum chloride to see the impact of this cation on acid-metal coordination. Mn2+, as well as Al3+, coordinate with the organic acids (i.e., acrylic acid and poly(acrylic acid)), and the soluble metal cations promote hardening of the material. In the case of acrylic acid, the addition of an azo initiator causes free radical polymerization which is also necessary for hardening of the polyalkenoate cement.