聚丙烯酸对(TTCP+MCPM+β-TCP)系骨水泥理化性质的影响  

Impact of PAA on Physical and Chemical Properties of (TTCP+MCPM+β-TCP) Bone Cement

作　　者：杨洪[1] 张翠娟[1] 杨梦洁[1] 李娜[1] 王爱新[1] 王凯[1] 

机构地区：[1]河南师范大学生命科学学院,河南新乡453007

出　　处：《精细化工》2011年第2期105-107,115,共4页Fine Chemicals

基　　金：河南省自然科学基金项目(0411031900)~~

摘　　要：用聚丙烯酸(PAA)作为固化液,对磷酸四钙(TTCP)+一水磷酸二氢钙(MCPM)+β-磷酸三钙(β-TCP)系骨水泥理化性质进行研究。结果表明,随着液固比(固化液体积mL/固相总质量g,下同)增大,固化时间延长,液固比为1.0 mL/g时,终凝时间达7 min;抗压强度随液固比增大,先升高后降低,液固比为0.8 mL/g时,达到最大值20.86 MPa;随浸泡时间增加,降解率先增加后逐渐趋于稳定;X射线分析(XRD)结果显示,随液固比改变,固化反应结晶物有羟基磷灰石(HA)和二水磷酸氢钙(DCPD)相出现,晶相的差异造成骨水泥降解率不同。The physico-chemical properties of tetracalcium phosphate（TTCP）＋monocalcium phosphate monohydrate（MCPM）＋β-tricalaium phosphate（β-TCP） bone cements with the polyacrylic acid（PAA） hardening liquid have been investigated.The results showed that the increase of the liquid to powder ratio caused an increase in the setting time of cements which allows the possibility for their control.The final setting time was 7 min when the liquid to powder ratio was 1.0.The compressive strength was also influenced by the liquid to powder ratio.When the liquid to powder ratio was 0.8 mL/g,it reached the maximum 20.86 MPa.The degradation rate gradully increased along the increasing immersion time,then attained stable.From XRD phase analysis,it was found that hydroxyapatite（HA） and dicalcium phosphate dihydrate（DCPD） were created in the setting process,suggesting that the various crystal phases in the bone cement resulted in a different degradation rate.

关 键 词：磷酸四钙 磷酸钙骨水泥 聚丙烯酸 功能材料 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ050.42[化学工程]