【摘 要】
：
Calcium phosphate cements (CPC) are highly valuable materials for the repair of bone defects with excellent biocompatibility and bioactivity. However, the use of CPC is restricted by their lack of mac
【机 构】
：
Key Lab of Advanced Materials Technology of Ministry of Education, School of Material Science & Engi
【出 处】
：
第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
Calcium phosphate cements (CPC) are highly valuable materials for the repair of bone defects with excellent biocompatibility and bioactivity. However, the use of CPC is restricted by their lack of macroporosity and poor osteogenic activity. In this paper, the conductive CPC were prepared by adding the reduced-graphene oxide (RGO) /PPy composites and the biocompatibility was studied by in vitro co-culture with the MC3T3-E1 osteoblasts under the stimulation of micro direct current. The relationship between the stimulation with different dc current and the cell performances in vitro had been investigated.The results show that when CPC were co-cultured with osteoblasts under the stimulation of micro direct current, there were better cell performances than that under no direct current sitmulation. When were co-cultured with osteoblasts under, Moreover, CPC exhibited the best biocompatibility in vitro under the stimulation of 10 mA direct current. Therefore,these conductive CPC can greatly increase the biocompability under the stimulation of micro direct current and will be a promising biomaterial for bone defect repairing.
其他文献
High velocity air fuel technique has lower temperature than High velocity oxygen fuel technique during spray process. Moreover, the spray powders performs better oxidation resistance during HVAF spray
This study is to create a high density 8YSZ electrolyte of solid oxide fuel cell by the suspension flame spray. Dense zirconia coating couldnt be achieved by the normal flame spray due to its lower fl
在ABO3型铁电体钙钛矿材料(BiFeO3,Pb(Zr1-xTix)O3,BaTiO3)中已观察到光伏作用.但是O元素与过渡金属元素的电负性相差较大,使得ABO3型铁电体钙钛矿材料的禁带宽度较大(2.7-4 eV),较大的禁带宽度限制了其在太阳能电池方面的应用.KNbO3(KNO),作为一种重要的无铅型铁电材料,由于特殊的光学和电学材料,已经得到关注.研究表明采用BaNi1/2Nb1/2O3-δ(
Ultilizing diamond particles and fibers as fillers, diamond-silicone rubber composites are fabricated to obtain a thermally conductive and electrically insulating thermal interface materials and their
Ta涂层被认为是取代耐烧蚀涂用电镀Cr涂层的较佳候选涂层体系.本文利用电弧离子镀方法在钛合金表面制备了Ta-W涂层.研究了涂层/基体体系的显微结构及性能,以评估Ta-W涂层在钛合金表面的应用.涂层连续、均匀,主要由α-Ta(W)组成.涂层与基体晶格为共格/半共格,有助于涂层中α-Ta(W)的形成.涂层由100-250 nm致密等轴晶组成.划痕试验表明,涂层与基体的临界载荷达58.8N,可满足工程需
Polyurethane hybrid materials with different compositions of low surface energy polydimethylsiloxane and degradable poly(L-lactic acid)were synthesized by three major steps.Initially,the hydroxylation
Bimetallic composite pipe consists of a CRA layer for corrosion resistance and carbon steel for mechanical properties, which shows a promising prospect of gathering pipeline with its effective-cost an
With the increasingly severe working condition, machine components need to expose tocorrosive media including Cl- and SO42- containing environments. In this work, erosion-corrosion properties of HVOF
The respective advantages of porcine bone hydroxyapatite (PBHA) and chitosan (CS) were combinated together, Chinese medicine Drynariae Rhizoma (DR) was introduced into bone repair materials for the pu
本论文基于化学气相沉积的原理、采用真空蒸镀的方法，通过控制加热温度、通入气体的气流速率以及镁合金与尿素之间的距离等条件，在镁合金表面沉积一层氮化碳薄膜。并利用X射线衍射(XRD)、傅里叶红外吸收光谱(FTIR)以及能谱仪(EDS)三种方式，分析镁合金表面氮化碳薄膜的物质组成和特征官能团，确定镁合金表面成功镀上了一层氮化碳薄膜。再用扫描电子显微镜观察镁合金表面氮化碳薄膜的表面形貌，结果显示薄膜平整、