手性聚合物和复合材料的电泳沉积。
Electrophoretic deposition of chiral polymers and composites.
机构信息
Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada.
出版信息
Colloids Surf B Biointerfaces. 2011 Oct 15;87(2):505-9. doi: 10.1016/j.colsurfb.2011.05.043. Epub 2011 May 27.
Electrophoretic deposition (EPD) method has been developed for the deposition of thin films of chiral polymers. EPD of poly-L-lysine (PLL) and poly-L-ornithine (PLO) films was performed for the first time on conductive substrates from aqueous and ethanol-water solutions. The deposition yield was monitored using a quartz crystal microbalance. The results demonstrated that the deposition yield can be varied by variation of the deposition time, voltage and polymer concentration in the solutions. It was shown that PLL and PLO provided stabilization and charging of hydroxyapatite (HA) nanoparticles in suspensions. Composite PLL-HA and PLO-HA films of controlled thickness were prepared by EPD. Electron microscopy investigations showed that the thickness of the PLL, PLO and composite films was varied in the range of 0-3 μm. The polymer and composite films can be used for biomedical applications.
电泳沉积（EPD）方法已被开发用于沉积手性聚合物的薄膜。首次在导电基底上从水溶液和乙醇水溶液中进行了聚-L-赖氨酸（PLL）和聚-L-鸟氨酸（PLO）薄膜的 EPD。使用石英晶体微天平监测沉积产率。结果表明，沉积产率可以通过改变沉积时间、电压和溶液中的聚合物浓度来调节。结果表明 PLL 和 PLO 可稳定并带电羟基磷灰石（HA）纳米颗粒在悬浮液中。通过 EPD 制备了具有可控厚度的 PLL-HA 和 PLO-HA 复合薄膜。电子显微镜研究表明，PLL、PLO 和复合薄膜的厚度可在 0-3 μm 范围内变化。聚合物和复合薄膜可用于生物医学应用。
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