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聚磷酸钙晶型与聚合度的调控
作者:吴建锋 李勇华 徐晓虹 张亚祥 劳新斌 李坤 
单位:武汉理工大学材料科学与工程学院 武汉 430070 
关键词:聚磷酸钙 复相生物陶瓷 热处理制度 晶型 聚合度 
分类号:R318.08
出版年,卷(期):页码:2012,40(4):534-541
DOI:
摘要:

  要:聚磷酸钙(calcium polyphosphateCPP)是具有生物活性、可控生物降解性和适当力学性能的新型骨修复材料。以磷酸二氢钙粉末试剂为起始原料,通过热处理制备了不同晶型及聚合度的CPP,并探讨了热处理制度与晶型转变和聚合度的关系。用X射线衍射分析、热重差示扫描量热分析、扫描电子显微镜、核磁共振分析等测试手段对制备的粉体的组成、性能及微观结构进行了研究。结果表明:在室温~1 000 之间,CPP3种晶型出现,分别为γ-CPPβ-CPPα-CPP。聚合度的大小主要取决于在400 附近保温时间的长短,CPP150 1 000 ,聚合反应一直在进行,直至形成无定型态,并熔化为玻璃。最佳的热处理工艺是400 保温6 h,然后800 保温2 h

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Abstract: Calcium polyphosphate (CPP), which has outstanding bioactivity, controllable degradability and proper mechanical property, is a novel material for bone repair. CPP of different crystal forms and polymerization degrees were synthesized by heat treatment using calcium biphosphate as starting material, effects of heat treatment on phase transformation and polymerization degree were also discussed. The effect of the composition, properties and microstructure of CPP were studied by X-ray diffraction, thermogravimetricdifferential scanning calorimeter, scanning electron microscopy and nuclear magnetic resonance. The results reveal that there were three types of CPP between RT1 000 , which were γ-CPP, β-CPP and α-CPP. Polymerization degree depended on the heat holding time at 400 , the polymerization reaction of CPP hadn’t stopped until it formed amorphous phase and melting into glass from 150 to 1 000 . The best sample was obtained by being heated at 400 for 6 h and then heated at 800 for 2 h.

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作者简介:
第一作者:吴建锋(1963—),男,博士,教授。
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参考文献:

1]  孙艳荣, 范涛, 黄勇, . 羟基磷灰石生物陶瓷材料的研究趋势及展望[J]. 硅酸盐学报, 2010, 38(6): 11451150.

SUN Yanrong, FAN Tao, HUANG Yong, et al. J Chin Ceram Soc, 2010, 38(6): 11451150.

[2]  赵娜如, 康海峰, 魏煊, . 原位凝固成型法制备可控孔隙结构的多孔β-磷酸三钙陶瓷[J]. 硅酸盐学报, 2010, 38(12): 23142318.

ZHAO Naru, KANG Haifeng, WEI Xuan, et al. J Chin Ceram Soc, 2010, 38(12): 23142318.

[3]  BODEN S D. Biology of lumbar spine fusion and use of bone graft substitutes: present, future, and next generation [J]. Tissue Eng, 2000, 6(4): 383399.

[4]  GRYNPAS M D, PILLIAR R M, KANDEl R A, et al. Porous calium polyphosphate scaffolds for bone substitute application in vivo studies [J]. Biomaterials, 2002, 23(9): 20632070.

[5]  PILLIAR R M, FILIAGGI M J, WELLS J D, et al. Porous calcium polyphosphate scaffolds for bone substitute applications-in vitro characterization [J]. Biomaterials, 2001, 22: 963972.

[6]  YANG L, WANG J, HONG J, et al. Synthesis and characterization of a novel polymer-ceramic system for biodegradable composite applications[J]. J Biomed Mater Res, 2003, 66: 622632.

[7]  戴红莲, 李世普, 闫玉华, . β-磷酸三钙多孔生物陶瓷植入体内后的组成变化[J]. 硅酸盐学报, 2004, 32(7): 800807.

DAI Honglian, LI Shipu, YAN Yuhua, et al. J Chin Ceram Soc, 2004, 32(7): 800807.

[8]  赵娜如, 王迎军, 叶建东, . β-磷酸三钙生物活性玻璃聚乳酸多孔复合材料的降解性能[J]. 硅酸盐学报, 2007, 35(6): 679682.

ZHAO Naru, WANG Yingjun, YE Jiandong, et al. J Chin Ceram Soc, 2007, 35(6): 679682.

[9]  QIU K, WAN C X, CHEN X, et al. In vitro degradation studies of calcium polyphosphate ceramics prepared by controlled degree of polymerization and cyrstallization [J]. Key Eng Mater, 2005, 288: 553556.

[10]  QIU K, WAN C X, ZHAO C S, et al. Fabrication and characterization of porous calcium polyphosphate scaffolds [J]. J Mater Sci. 2006, 41: 2429–2434.

[11]  邱凯. 掺锶聚磷酸钙作为骨组织工程支架材料的研究[D]. 四川: 四川大学, 2005.

QIU Kai. Study on Strontium-doped Calcium Polyphosphate for Bone Tissue Engineering (in Chinese, dissertation). Sichuan: SichuanUniversity, 2005.

[12]  FILIAGGI M J, HALL G. A compaction route for low temperature processing of porous calcium polyphosphate matrices [J]. Key Eng Mater, 2002, 218: 4346.

[13]  MCLNTOSH A O, JABLONSKI W L. X-ray diffraction powder patterns of the calcium phosphate [J]. Anal Chem, 1956, 9: 14241427.

[14]  GUO LH, LI H, GAO XH. Phase transformations and structure characterization of calcium polyphosphate during sintering process [J]. J Mater Sci, 2004, 39(23): 70417047.

[15]  GUNTER G C, CRACIUM R, TAM M S, et al. FTIR and 31P-NMR spectroscopic analyses of surface species in phosphate-catalyzed lactic acid conversion [J]. J Catal. 1996, 164(1): 207219.

[16]  郑昌琼, 冉均国. 新型无机材料[M]. 北京: 科学出版社, 2003: 575576.

[17]  DION A, BERNO B, HALL G, et al. The effect of processing on the structural characteristics of vancomycin-loaded amorphous calcium phosphate matrice [J]. Biomaterials, 2005, 26: 44864494.

[18]  刘羽, STOPPA F, TONUCCI L, . 羟磷灰石的1H NMR谱学研究[J]. 硅酸盐学报, 2002, 30(S1): 4244.

LIU Yu, STOPPA F, DNUCCI L, et al. J Chin Ceram Soc, 2002, 30(S1): 4244.

[19]  李克友, 张菊华, 向福如, . 高分子合成原理及工艺学[M]. 北京: 科学出版社. 1999,

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