论文部分内容阅读
采用静电纺丝技术制备聚左旋乳酸(PLLA)、胶原和壳聚糖纳米纤维,并分别以3种纳米纤维膜作为沉积模板采用电沉积技术矿化磷酸钙盐。通过扫描电子显微镜、傅里叶红外光谱分析沉积矿物的成分,不同聚合物对矿化的影响。结果表明:PLLA纺丝液最优配方为:PLLA为10%,溶于DCM∶DMF(体积配合比)为9∶1,在PLLA纳米纤维膜上能够形成大量且均匀的片状晶体。不同聚合物基底上生成的磷酸钙盐晶体的组成主要以羟基磷灰石(HA)为主。为不同聚合物基底上电矿化磷酸钙盐涂层提供借鉴。
Poly-L-lactic acid (PLLA), collagen and chitosan nanofibers were prepared by electrospinning technique. Three types of nanofiber membranes were used as deposition template to deposit calcium phosphate salts by electrodeposition. By scanning electron microscopy, Fourier transform infrared spectroscopy analysis of mineral composition, the impact of different polymers on the mineralization. The results showed that the optimal PLLA spinning solution was PLLA 10%, dissolved in DCM: DMF (volume ratio) of 9:1, and PLLA nanofibers could form a large amount of uniform and platelet crystals. The composition of the calcium phosphate crystals formed on different polymer substrates is mainly hydroxyapatite (HA). It provides a reference for the electrocatalysis calcium phosphate coating on different polymer substrates.