静电自组装聚乳酸/海藻酸钠/壳聚糖复合材料  

Research on the PDLLA/Sodium Alginate/Chitosan Composite Material Prepared by Electrostatic-self-assembly

作　　者：宁华宇[1] 游永宁[1] 闫玉华[2] 徐海星[2] 李世普[2] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]武汉理工大学生物中心,武汉430070

出　　处：《武汉理工大学学报》2009年第10期14-16,共3页Journal of Wuhan University of Technology

基　　金：国家重点基础研究发展计划(2005CB623905);武汉理工大学国家大学生创新性实验计划

摘　　要：利用静电自组装技术,制备一种用于神经修复的聚乳酸/海藻酸钠/壳聚糖不对称结构的复合材料。通过紫外-可见光谱观测分析了自组装过程,利用全反射红外光谱对胺化前后的材料进行表征,扫描电镜观测组装后的材料微观形貌,接触角测试表征组装后的亲水性变化情况。紫外-可见光谱测试结果表明自组装层呈线性增长,红外光谱结果显示1,6-己二胺和聚乳酸发生一定程度的化学键合,接触角测试表明组装后材料的亲水性有了明显的改善。To prepare PDLLA/sodium alginate/chitosan asymmetric structural composite material used in peripheral nerve by electrostatic self-assembly technique. The deposition process is monitored by UV-Vis absorbanee spectroscopy. Infrared spectroscopy has approved the amination effect. The scanning electron microscope （SEM） shows material＇s microscopic morphological characteristics. Hydrophilic change test is characterized by water contact angle. The result of UV-Vis spectra shows that the absorbance of the assembly multilayer increases linely. The expected multilayer structural composite material is prepared that 1, 6-diaminehexane and PDLLA had successfully formed amino complex covalence compound through the result of ATR-FT-IR. The hydrophilic ability of material obviously improves after self-assembly.

关 键 词：静电自组装 聚乳酸 壳聚糖 海藻酸钠 

分 类 号：TQ174.75[化学工程—陶瓷工业]