不同碳纳米管/羟基磷灰石复合粉末的添加对磷酸钙骨水泥性能和结构的影响  

Effects of Adding Carbon Nanotubes/Hydroxyapatite Composites on the Properties and Structure of Calcium Phosphate Cement

作　　者：邱添[1] 黄静静[1] 张苗[1] 王先福[1] 李辰[1] 卢晓英[1] 翁杰[1] 

机构地区：[1]西南交通大学材料科学与工程学院,材料先进技术教育部重点实验室,成都610031

出　　处：《无机材料学报》2013年第1期91-96,共6页Journal of Inorganic Materials

基　　金：国家973项目(2012CB933602);国家自然科学基金(51172188);中央高校基本科研业务费专项资金(SWJTU12CX013;SWJTU11ZT05);西南交通大学SRTP国创项目(201210613008)~~

摘　　要：采用物理共混法(PB)、化学共沉积法(CC)和仿生浸泡法(BI)合成了多壁碳纳米管/羟基磷灰石复合粉(MWNTs/HA),并将其作为磷酸钙骨水泥(CPC)的固相粉末之一,分别制备了相应的CPC样品。由于MWNTs对液相中水分子的吸附、毛细管作用以及表面存在较多的亲水基团,使得含有MWNTs的CPC样品的亲水性得以提高,且初凝时间和终凝时间都有所缩短,但仍满足临床应用的要求。由于CPC中的MWNTs/HA复合粉末的合成方式不同,使之对CPC的抗压性能、CPC中HA的结晶性、微观形貌影响均较大,但并不影响CPC的晶相组成。其中PB法所合成的MWNTs/HA复合粉末能促进CPC中纳米级HA晶体的转化和生长,使针状HA含量的表现为最高,且抗压力学性能为最好,其抗压强度和弹性模量分别较空白CPC提高了48.23%和41.87%。The multi-walled carbon nanotubes （MWNTs）/hydroxyapatite （HA） composites were synthesized by three different methods, namely physical blending （PB）, chemical coprecipitation （CC） and bionic immersion （BI）, and used as one of solid phase powders for the preparation of calcium phosphate cement （CPC）. For the addition of MWNTs/HA composites, CPC had an increasing hydrophilicity and a decreasing initial and final setting time. How- ever, the initial setting time and final of CPC made of MWNTs/HA powders still met the clinical requirements for the biomedical applications. The addition of MWNTs/HA composites synthesized by different methods had great effect on the compressive properties of CPC and HA crystallinity in CPC, but had no effect on the phase composition of CPC. Compared with blank CPC, CPC-CC and CPC-BI, CPC-PB had the best compressive mechanical properties and the highest HA conversion and content. Compared with blank CPC, the compressive strength and elastic modulus of CPC synthesized by PB method increased 48.23% and 41.87%, respectively.

关 键 词：磷酸钙骨水泥 碳纳米管 羟基磷灰石 物理共混 化学共沉积 仿生浸泡 

分 类 号：TB321[一般工业技术—材料科学与工程]