Evaluation of Bioactive Properties of α and β Wollastonite Bioceramics Soaked in a Simulated Body Fluid  

作　　者：Luis A.Nunez-Rodriguez Martin A.Encinas-Romero Agustin Gomez-Alvarez Jesus L.Valenzuela-Garcia Guillermo C.Tiburcio-Munive 

机构地区：[1]Posgrado en Ciencias de la Ingenieria:Ingenieria Quimica,Universidad de Sonora,Hermosillo,Mexico [2]Departamento de Ingenieria Quimica y Metalurgia,Universidad de Sonora,Hermosillo,Mexico

出　　处：《Journal of Biomaterials and Nanobiotechnology》2018年第3期263-276,共14页生物材料与纳米技术（英文）

摘　　要：Dense natural wollastonite bioceramics (CaSiO3) were prepared by a sintering method, varying the pressing load and sintering temperature, in order to obtain different phases of wollastonite, and different physical properties in the materials. The products were characterized by TGA-DTA, XRD, FT-IR, SEM-EDS, TEM and XPS techniques. The results indicate the presence of two polymorphic phases of wollastonite, the β-wollastonite and α-wollastonite with a transition temperature of the β phase to α phase at approximately 1250℃. These materials were soaked in a simulated body fluid (SBF) during 1, 2 and 3 weeks, to study their solubility and bioactivity. The effect of different wollastonite phases on the solubility of Ca and Si, as well as the capacity of producing layers of “newly formed apatite” on the surfaces of these materials in SBF solution were analyzed.Dense natural wollastonite bioceramics (CaSiO3) were prepared by a sintering method, varying the pressing load and sintering temperature, in order to obtain different phases of wollastonite, and different physical properties in the materials. The products were characterized by TGA-DTA, XRD, FT-IR, SEM-EDS, TEM and XPS techniques. The results indicate the presence of two polymorphic phases of wollastonite, the β-wollastonite and α-wollastonite with a transition temperature of the β phase to α phase at approximately 1250℃. These materials were soaked in a simulated body fluid (SBF) during 1, 2 and 3 weeks, to study their solubility and bioactivity. The effect of different wollastonite phases on the solubility of Ca and Si, as well as the capacity of producing layers of “newly formed apatite” on the surfaces of these materials in SBF solution were analyzed.

关 键 词：BIOCERAMICS WOLLASTONITE Simulated Body Fluid Bioactivity 

分 类 号：R73[医药卫生—肿瘤]