Sarmast Sh M, George S, Dayang Radiah A B, Hoey D, Abdullah N, Kamarudin S
Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia.
Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia; Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia.
J Mech Behav Biomed Mater. 2022 Jun;130:105174. doi: 10.1016/j.jmbbm.2022.105174. Epub 2022 Mar 20.
This study introduces a templating approach using a cellulosic suspension to create a porous SiO-CaO-PO-NaO bioactive glass material. Sol-gel approach was used as the synthesis method. Carbon nanofibers in suspension form was used as the templating material. The amount of CNF used in the experiment ranged from 5% to 25% by volume. The morphology, porosity, crystallinity of the combeite phase, mechanical and chemical properties of the BG samples were examined. The findings show that the templating method had no effect on the formation of the required functional elements, such as Si, Ca, Na and P. The porosity of the BG materials improves by 15% after templating compared to the neat sample. The formed pores were assumed to be homogenous based on the uniform adsorption and desorption BET profiles. The crystallization mechanisms during the sintering process were affected by the templating approach, indicating the need for a specific amount of template to be used in the preparation step. Both the sintering temperatures and the CNF content affected the formation of the combeite phase. The BG samples had excellent mechanical properties and are suitable for use in cancellous bone applications. As a result, this study shows a novel method for synthesizing porous bioactive glass materials via the sol-gel method and a CNF suspension as a template.
本研究介绍了一种使用纤维素悬浮液的模板法来制备多孔SiO-CaO-PO-NaO生物活性玻璃材料。采用溶胶-凝胶法作为合成方法。以悬浮形式的碳纳米纤维作为模板材料。实验中使用的碳纳米纤维的量按体积计在5%至25%的范围内。对BG样品的形貌、孔隙率、硅钙石相的结晶度、力学性能和化学性能进行了研究。结果表明，模板法对所需功能元素（如Si、Ca、Na和P）的形成没有影响。与纯样品相比，模板化后BG材料的孔隙率提高了15%。基于均匀的吸附和解吸BET曲线，假定形成的孔是均匀的。烧结过程中的结晶机制受模板法影响，这表明在制备步骤中需要使用特定量的模板。烧结温度和碳纳米纤维含量都影响了硅钙石相的形成。BG样品具有优异的力学性能，适用于松质骨应用。因此，本研究展示了一种通过溶胶-凝胶法和以碳纳米纤维悬浮液为模板合成多孔生物活性玻璃材料的新方法。
