Effect of Hydroxyapatite on the Glue Line Strength of the Compositions Containing Polyvinylpirrolidone

Abstract

The influence of nature and mineral filler amount on adhesive ability of composite materials based on 2-hydroxyethylmethacrylate and polyvinylpyrrolidone modified by the low-molecular additives has been determined. The hydroxyapatite effect on the value of adhesive strength of the glued seam composites has been researched.

New Solid-Solutions of Substitution Strontium (Sr) for Lead (Pb) in Apatite Structure

“…B., 2023 (Pb 10 (PO 4 ) 6 (OH) 2 ) was prepared and calcined at different temperatures: 37, 80, 100, 300, 425, 600, and 900 °C or kept at 40 °C for seven days. [13][14][15][16][17][18][19] By precipitating process, pyromorphite, Pb 10 (PO 4 ) 6 Cl 2 , and mimetite, Pb 10 (AsO 4 ) 6 Cl 2 structures were synthesized at 298 K. 20 Lead bromoapatite, [Pb 10 (PO 4 ) 6 Br 2 ], has been synthesized by ceramic method (solid-state reaction) at the temperature of 900 °C for 20 hours or 750 °C for 87 hours and pressure of 1.0 GPa. 21 Lead fluorapatite, Pb 10 (PO 4 ) 6 F 2 was synthesized in a conventional muffle furnace at the temperature of 1237 °C 22 or 1000 °C for 10 hours.…”