Effect of magnesia on the degradability and bioactivity of sol-gel derived SiO2-CaO-MgO-P2O5 system glasses

被引：85
作者：
Ma, J. [1 ,2 ]
Chen, C. Z. [1 ,2 ]
Wang, D. G. [1 ,2 ]
Jiao, Y. [1 ,2 ]
Shi, J. Z. [1 ,2 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China
来源：
COLLOIDS AND SURFACES B-BIOINTERFACES | 2010年 / 81卷 / 01期
基金：
美国国家科学基金会;
关键词：
Bioactive glass; Magnesia; Degradation; Bioactivity; Sol-gel; IN-VITRO BIOACTIVITY; COMPOSITIONAL DEPENDENCE; APATITE LAYER; BONE; CERAMICS; INVITRO; SURFACE; HYDROXYAPATITE; CRYSTALLINITY; CAO-SIO2-P2O5;
D O I：
10.1016/j.colsurfb.2010.06.022
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Mesoporous 58SiO(2)-(38 - x)CaO-xMgO-4P(2)O(5) glasses (where x = 0, 5, 10 and 20 mol%) have been prepared by the sol-gel synthesis route. The effects of the substitution of MgO for CaO on glass degradation and bioactivity were studied in tris-(hydroxymethyl)-aminomethane and hydrochloric acid buffer solution (Tris-HCl) and simulated body fluid (SBF), respectively. Iris observed that the synthesized glasses with various MgO contents possess the similar textural properties. The studies of in vitro degradability and bioactivity show that the rate of glass degradation gradually decreases with the increase of MgO and the formation of apatite layer on glass surface is retarded. The influences of the composition upon glass properties are explained in terms of their internal structures. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：87 / 95
页数：9
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