文献类型：期刊文献

中文题名：添加剂对磷酸钙骨水泥流变性能的影响Ⅱ.聚乙二醇

英文题名：Influence of Additives on Rheological Properties of Calcium Phosphate Cement Ⅱ. Polyethylene Glycol

作者：金晶[1];刘昌胜[1]

机构：[1]华东理工大学教育部医用生物材料工程研究中心,上海200237

年份：2005

卷号：31

期号：1

起止页码：88

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家863计划资助项目(2001AA-320606);上海市重点项目(0144NM064);国家自然科学基金(50202006)

语种：中文

中文关键词：磷酸钙骨水泥;聚乙二醇;流变;触变性

外文关键词：calcium phosphate bone cement(CPC); polyethylene glycol(PEG); rheology; thixotropy

摘要：采用高级流变扩展系统对引入聚乙二醇(PEG)后的磷酸钙骨水泥(CPC)浆体的流变性能进行了考察,在固化液中引入不同相对分子质量的聚乙二醇可改善CPC的流变特性。采用稳态流变实验得到粘度曲线;采用滞后环面积评价法考察CPC浆体的触变性。结果表明:CPC是一种剪切变稀的浓悬浮体,添加PEG后体系粘度增大、触变性增强、结构可恢复性变好。随着PEG浓度的增加(0.005≤w≤0.30),体系粘度增大,体系的触变性增强。综合评价后得出0.01≤wPEG≤0.10范围内对磷酸钙骨水泥混合体系的流变性能有较好的作用。
The influence of polyethylene glycol(PEG) on the rheological characteristics of calcium phosphate bone cement(CPC) was investigated in this work with an advanced rheometric expansion system(ARES) rheometer. By adding the PEG of different molecular weights into the setting liquid, the rheological properties of CPC slurry could be improved obviously. The viscosity curves were obtained through steady transient test to evaluate the characters of flowage and the thixotropic properties were measured by the thixotropic loop test. The results show that the CPC slurry is a typical shear-thinning fluid and the (addition) of PEG do not change this property of CPC slurry. But due to the existence of PEG, the viscosity of CPC slurry and the area of thixotropic loop increase and the restorability is also improved. So the stability of CPC slurry is improved. With the increasing of PEG concentration(w=0.005~0.30), the viscosity and thixotropy of CPC slurry both increase and the restorability decreases. In this range, the rheological properties of CPC slurry are all improved.