1991/01/01 by Russell M. Potter, Potter, Russell M., Stephanie M. Mattson +1
Engineering · Materials Science · #660 #Advanced ceramic materials synthesis #Bone Tissue Engineering Materials #Glass properties and applications
paper · doi:10.34657/14083
openalex publication_date 1991/01/01 · openalex created_date 2016/08/23 · openalex updated_date 2026/07/01
A technique developed to measure the dissolution rate of glass fibers in the laboratory under conditions approximating those thought to exist in the lung has been applied to 30 glass compositions in the SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-CaO-MgO-BaO-Na<sub>2</sub>O system. Dissolution rates show an Arrhenius dependence on temperature with an activation energy near 64 kJ/mol. The rate increases with the pH value. Glass fiber dissolution is a leaching process which leaves behind a mechanically-weak layer consisting of SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> . Dissolution morphology changes with dissolution rate, suggesting a change in dissolution mechanism. Dissolution rates vary with composition from 0.9 to 887 ng/(cm<sup>2</sup>h). Al<sub>2</sub>O<sub>3</sub> strongly decreases the dissolution rate, B<sub>2</sub>O<sub>3</sub>, BaO, CaO, MgO, and Na<sub>2</sub>O increase the rate to about the same degree, and SiO<sub>2</sub> has little effect.