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《Journal of Clinical Stomatology》 2014-10
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The catalytic effect of PAH to zirconium precursor deposition in the collagen fibers

SHI Wei;MA Bo;XU Yi-wen;HUANG Zhi-bin;ZHOU Bin;Department of Stomatology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Techology;  
Objective:Zirconium Oxide has excellent mechanical properties,so they have various commercial applications. The purpose of this study is to analyze the influence of PAH pretreated collagen fibers in infiltration of Yttria stabilized zirconia. Method:Yttria stabilized zirconia precursor solution was prepared. The PAH pre-treated(test)and PAH non-treated(control)collagen fibers were mineralized using Yttria-stabilized zirconia precursor solution. These collagen were analyzed at different period of time by particle size distribution,Transmission electron microscopy(TEM),Scanning electron microscopy(SEM),X-ray diffraction(XRD). Result:Particle size distribution showed larger particle size after pretreatment of collagen fibers with PAH. TEM and SEM results showed the intrafibrillar infiltration of YSZ only into the PAH pretreated type I collagen. XRD results showed the amorphous zirconium in the collagen changed into tetragonal crystals after high temperature sintering. Conclusion:This study showed that the PAH pretreatment of collagen fibers can guide the deposition of YSZ within it.
【Fund】: 国家自然科学基金(81171450);; 湖北省自然科学基金(2011CDB539);; 华中科技大学交叉学科基金(2014ZHYX005)
【CateGory Index】: R783.1
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