Phosphate glasses for tissue engineering:: Part 2.: Processing and characterisation of a ternary-based P2O5-CaO-Na2O glass fibre system
Phosphate glasses for tissue engineering:: Part 2.: Processing and characterisation of a ternary-based P2O5-CaO-Na2O glass fibre system
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DOI：
10.1016/s0142-9612(03)00547-7
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发表时间：
2004-02-01
期刊：
影响因子：
14
通讯作者：
Knowles, JC
中科院分区：
文献类型：
--
作者：
Ahmed, I;Lewis, M;Knowles, JC
本文介绍了一系列磷酸盐基玻璃纤维（PB-GF）的热性能，溶解性和尺寸的研究结果。通过将P（2）O（5）含量固定为45、50和55摩尔%，并将CaO摩尔%改变为30、35和40，来限制玻璃组成。PB-GF从50和55mol%P（2）O（5）组合物获得;然而，我们不能从45mol%组合物获得纤维。这与所研究组合物的交联密度、网络连接性和平均链长有关。关于热参数的研究，初始数据显示，在每个固定的磷酸盐含量的T（g）和结晶温度的增加，增加CaO摩尔%。随着P（2）O（5）含量增加到55mol%，T（g）温度也降低。对于具有55摩尔%固定磷酸盐的组合物获得的结晶温度显示出相反的模式，与固定的50摩尔%磷酸盐组合物相比，其值降低。如预期的，纤维的直径都随着RPM的增加而减小，并且溶解度也随着RPM的增加而增加。这与较高RPM纤维的表面积增加有关。随着CaO摩尔%的增加，溶解度也降低。(C)2003 Elsevier Ltd.保留所有权利。
This paper presents the results of a study of the thermal properties, solubility and dimensions of a range of phosphate-based glass fibres (PB-GFs). The glass compositions were limited by fixing the P(2)O(5) content to 45, 50 and 55 mol%, and varying the CaO mol% at 30, 35 and 40. PB-GFs were obtained from the 50 and 55mol% P(2)O(5) compositions; however, we were unable to obtain fibres from the 45 mol% compositions. This was linked to the cross-linked density, network connectivity and average chain length of the compositions studied. With regards to thermal parameters investigated, initial data showed an increase of the T(g) and crystallisation temperatures with increasing CaO mol% at each fixed phosphate content. A decrease in T(g) temperatures was also observed with increasing P(2)O(5) content to 55 mol%. The crystallisation temperatures obtained for compositions with fixed phosphate at 55 mol%, showed a reverse pattern, with a decrease in values as compared to the fixed 50 mol% phosphate compositions. The diameters of the fibres all decreased with increasing RPMs as expected, and the solubility also increased with increasing RPMs. This was related to the increased surface area of the higher RPM fibres. There was also a decrease seen in solubility with increasing CaO mol%. (C) 2003 Elsevier Ltd. All rights reserved.