以溶膠-凝膠法製備介孔SiO2-CaO-P2O5 生醫玻璃

Characterization of nanostructured mesoporous SiO2-CaO-P2O5 bioactive glass with a sol-gel method

吳偉浩(Wei Haw Wu)

指導教授 ： 張莉毓

國立屏東科技大學/工學院/機械工程系所/碩士(2009年)

https://doi.org/10.6346/NPUST.2009.00268

摘要

具有骨修復性能和生物相容性的生醫玻璃材料，其在齒科和骨科等臨
床領域具有重要的應用價值。介孔材料由於具有較高的比表面積和孔體
積之特性，因而具有遠高於普通生醫玻璃材料的體外生物活性。本研究
以三嵌段兩性共聚物(triblock copolymer)和十六烷基三甲基溴化銨(CTAB)
為天然有機模板，四乙矽酸鹽、硝酸鈣和三乙基磷酸鹽為反應物，利用
溶膠-凝膠法製備介孔SiO2-CaO-P2O5生醫玻璃。經TGA、XRD、FTIR、
SEM、TEM和BET分析材料微結構，探討不同Ca/P比例和煆燒溫度對介
孔結構之影響。
實驗結果顯示，以Ca/P比為2:2、3:2、4:2和5:2，係使用三嵌段兩性共聚
物經400 ~ 700°C煆燒後，獲得非晶相之介孔SiO2-CaO-P2O5生醫玻璃。以
十六烷基三甲基溴化銨為模板，煆燒溫度400 ~ 700 °C，Ca/P比為2:2，亦
為非晶相，而Ca/P比為3:2、4:2和5:2，則合成具有氫氧基磷灰石相之介孔
SiO2-CaO-P2O5生醫玻璃。另一方面，Ca/P比為4:2，以三嵌段兩性共聚物
為模板，經400 °C 煆燒後得到最大孔徑之介孔SiO2-CaO-P2O5生醫玻璃，
其平均孔徑可達400.29 Å。而利用十六烷基三甲基溴化銨為模板，Ca/P
比為3:2，經600 ºC煆燒後得到最大比表面積之介孔SiO2-CaO-P2O5生醫玻
璃，可達706.16 m2/g。

關鍵字

溶膠–凝膠法 ； 生醫玻璃 ； 介孔材料 ； 界面活性劑

並列摘要

Bioactive glasses have attracted much attention because of good
biocompatibility and their wide usage as artificial biomaterials in bone repair
and replacement. Bioactive glasses are widely used in many tissue
engineering applications, such as in dental repairs and orthopedic fixation
devices, as well as many others. Mesoporous bioactive glasses materials have
received much interest because of their high specific surface area and pore
volume, and exhibit better in vitro bone forming bioactivity compared to
conventional bioactive glasses. In this study, mesoporous SiO2-CaO-P2O5
bioactive glass was prepared by sol-gel process and the synthesis was
accomplished by using triblock copolymer and CTAB as the templates,
tetraethyl orthosilicate, calcium nitrate tetrahydrate and triethyl phosphate as
the inorganic precursors. The effects of Ca/P ratio of precursors and calcining
temperatures on the structure of mesoporous SiO2-CaO-P2O5 bioactive glass
were investigated by TGA, XRD, FTIR, SEM, TEM and BET analyses.
Using triblock copolymer as the template, mesoporous SiO2-CaO-P2O5
bioactive glasses with the amorphous phase were obtained at 400~700°C for
Ca/P ratio of 2:2, 3:2, 4:2 and 5:2. Using CTAB as the template and the
samples calcined at 400~700°C were composed of amorphous phase for Ca/P
ratio of 2:2, but apatite phase were formed as the calcining temperatures were
400~700°C for Ca/P ratio of 3:2, 4:2 and 5:2. The mesoporous
SiO2-CaO-P2O5 bioactive glass is shown to have a large pore size of 400.29 Å
for Ca/P ratio of 2:2 and using triblock copolymer as template after being
calcined at 400℃. In addition, the mesoporous SiO2-CaO-P2O5 bioactive glass
III
also showed a high specific surface area of 706.16 m2/g at 600 ºC calcination
for Ca/P ratio of 3:2 and using CTAB as template.

並列關鍵字

sol-gel method ； mesoporous bioactive glass ； mesoporous material ； surfactant

參考文獻

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