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Influence of Compositions in Borosilicate Glasses on its Simulation Mineralization Ability

GAO Chunxia,LI Yadong,WANG Xigang(Department of Inorganic and Nonmetallic Materials Engineering,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)  
The mimetic mineralization ability of three kinds of borosilicate glasses(designated 0B、1B and H12) immersed in 0.25M K2HPO4 aqueous solution was investigated.The structures and morphologies of the mineralized products were characterized using XRD,FTIR and SEM techniques.The results showed that the glasses have were converted to plate-like carbonated hydroxyapatite(HCA)crystals,and the overlapping arrangement assumed the porous structures.The crystallization of the HCA was more complete and more compact in stacking arrangement for 1B glass,less for 0B glass and between the both for H12 glass.The comprehensive analysis indicate that the boron and sodium element promotes mineralization,conversely,the aluminum element inhibits it.
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