用复合掺杂方法改性一种新型骨修复材料聚磷酸钙(CPP)以期综合提高材料的理化性能,其中的掺杂元素有钾(K)、钠(Na)和锶(Sr).通过X射线衍射分析(XRD)表征复合掺杂后材料的晶体结构并通过等离子发射光谱(ICP)分析掺杂后CPP内主要元素含量.以生理盐水为降解介质,通过失重法,钼蓝分光光度法和EDTA-钙红绿素滴定法分析材料的降解性能.用扫描电镜(SEM)观察在PBS矿化介质中浸泡样品的表面形貌,定性描述表面矿化沉积物的情况.通过检测多孔材料的抗压强度表征其力学性能.结果表明,复合掺杂改性不同程度地提高了材料的降解、矿化和力学性能,NSCPP和KSCPP材料相对于单一掺杂材料具有更显著的优势.
参考文献
[1] | Dion A;Berno B;Hall G;Filiaggi MJ .The effect of processing on the structural characteristics of vancomycin-loaded amorphous calcium phosphate matrices.[J].Biomaterials,2005(21):4486-4494. |
[2] | Piliar R M;Filliaggi M J;Wells M D et al.[J].Biomaterials,2001,22:963-972. |
[3] | Qiu K;Zhao XJ;Wan CX;Zhao CS;Chen YW .Effect of strontium ions on the growth of ROS17/2.8 cells on porous calcium polyphosphate scaffolds[J].Biomaterials,2006(8):1277-1286. |
[4] | Grynpas MD;Pilliar RM;Kandel RA;Renlund R;Filiaggi M;Dumitriu M .Porous calcium polyphosphate scaffolds for bone substitute applications in vivo studies.[J].Biomaterials,2002(9):2063-2070. |
[5] | Qiu K;Wan CX;Zhao CS;Chen X;Tang CW;Chen YW .Fabrication and characterization of porous calcium polyphosphate scaffolds[J].Journal of Materials Science,2006(8):2429-2434. |
[6] | John R;Wazer V.Phosphorous and Its Compounds[M].New York.Chemistry,1958:617-638. |
[7] | Thomas J;Webster;Elizabeth A et al.[J].BIOMATERIALS,2004,25:2111-2121. |
[8] | 余喜讯,陈元维,史国齐,丁玉龙,万昌秀.掺锶聚磷酸钙骨组织工程支架材料与成骨细胞及内皮细胞的相容性研究[J].中国组织工程研究与临床康复,2007(05):857-860. |
[9] | Christoffersen J;Christoffersen M R;Kolthoff N .[J].Bone,1997,20:47-54. |
[10] | Oliveira AL;Malafaya PB;Reis RL .Sodium silicate gel as a precursor for the in vitro nucleation and growth of a bone-like apatite coating in compact and porous polymeric structures.[J].Biomaterials,2003(15):2575-2584. |
[11] | 邱凯,万昌秀,陈馨,唐昌伟,陈元维.骨组织工程支架材料聚磷酸钙体外降解规律的研究[J].四川大学学报(工程科学版),2005(01):61-64. |
[12] | Song Wei;Tian Meng;Chen Feng et al.[J].Journal of Biomaterial Material Research:Part B-Applied Biomaterials,2009,89B:430-438. |
[13] | William D C;Allister J.Fundamentals of Materials Science and Engineering[M].New York:wiley,2000:105-111. |
[14] | 徐祖耀.相变原理[M].北京:科学普及出版社,1988 |
[15] | 段友容,王朝元,陈继镛,张兴栋.致密磷酸钙陶瓷在动态SBF中类骨磷灰石层形成研究[J].无机材料学报,2002(03):552-558. |
[16] | Weng J.;Wolke JGC.;Zhang XD.;Degroot K.;Liu Q. .FORMATION AND CHARACTERISTICS OF THE APATITE LAYER ON PLASMA-SPRAYED HYDROXYAPATITE COATINGS IN SIMULATED BODY FLUID[J].Biomaterials,1997(15):1027-1035. |
[17] | Ducheyne P;Kokubo T.Bone-boning Biomaterials[M].The Netherlands:Read Healthvcare Communications,1992:201. |
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