PVA/HA复合水凝胶的制备及性能研究

采用模板法制备了微孔羟基磷灰石,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)对其结构进行了表征。同时,制备了聚乙烯醇/微孔羟基磷灰石复合水凝胶和聚乙烯醇/纳米羟基磷灰石复合水凝胶。测试了聚乙烯醇/羟基磷灰石复合水凝胶的含水率和力学性能。实验表明,合成的羟基磷灰石具有微孔结构,复合水凝胶含水率可达到60%以上,羟基磷灰石的加入使复合材料的拉伸强度、断裂伸长率都得到了较大提高,可用于人造软骨,是一种很有开发前景的生物医用材料。

Preparation and properties of hydroxyapatite/polyvinyl alcohol compound hydrogels

The structure of tiny hole hydroxyl apatite,prepared by template method,is described with X ray diffraction(XRD),scan electronic microscope(SEM) and transmission electronic microscope(TEM).Polyethylene alcohol/tiny hole hydroxyl apatite compound water gel and polyethylene alcohol / nm hydroxyl apatite compound water gel are synthesized at same time.Both the mechanical properties and rate of water in polyethylene alcohol/ hydroxyl apatite compound water gel are tested out.The results show that the hydroxyl apatite has tiny hole structure,while the water rate in compound water gel can come over 60%.When being added with hydroxyl apatite,the strength and rupture length rate of the compound improve a lot.As a prospective biology material,the compound can be used as artificial cartilage.