Effect of Zn addition on sol-gel derived apatite/wollastonite glass-ceramics scaffolds


  • S. Tubsungneon Rattanachan
  • N. Srakaew
  • R. Pethnin
  • N. Suppakarn


Bioactive glasses and glass-ceramics consisting of CaO-MgO-P2O5-SiO2 system have been shown tobe bioactive, resorbable and to exhibit appropriate mechanical properties for bone tissue engineeringapplications. Bioactive glass-ceramics scaffolds consisting of zinc doped-apatite/wollastonite (AW) glassceramicswere prepared by coating polyurethane foams with sol-gel derived glass gels. Density andcompressive strength of the scaffolds decreased with increased in zinc contents. In vitro bioactivity of ZndopedAW glass-ceramics in a simulated body fluid (SBF) showed the formation of apatite layer on thesurface within 7 days of soaking. However, increasing Zn addition increased the chemical durability of theAW glass-ceramics, resulting in a decrease in the rate of apatite formation in a simulated body fluid. Withobservation by SEM technique microstructure of pores showed interconnected macropores in the range of 300-500 ?m as depended on the type of sponge. Average pore size increased with increasing the zincadditions. Macropores and interconnect size can be tailored by controlling the zinc concentrations.


Download data is not yet available.




How to Cite

S. Tubsungneon Rattanachan, N. Srakaew, R. Pethnin, and N. Suppakarn, “Effect of Zn addition on sol-gel derived apatite/wollastonite glass-ceramics scaffolds”, J Met Mater Miner, vol. 22, no. 2, Dec. 2012.



Original Research Articles