模板浸润法制备非极性聚合物纳米管和纳米线

Non-polar polymer nanotubes and nanorods fabricated by wetting of anodic aluminium oxide template

以孔径为200 nm的多孔阳极氧化铝(AAO)为模板,采用聚合物溶液或熔体浸润模板的物理方法,以非极性通用聚合物为原料,首次制备了非极性聚合物纳米管、纳米线及其阵列结构。对纳米管和纳米线的形貌和结构进行了表征,结果表明对非极性聚合物而言,温度是影响一维纳米结构的主要因素,在较低温度下只能制得纳米线;较高温度下才能得到纳米管。还指出AAO膜纳米孔的高表面效应与熔体的作用能是形成聚合物一维纳米结构的主要驱动力。

With AAO as a template via physical wetting of the polymer solution and melt, the non-polar polyethylene nanotube and nanowire or their array were synthesized from common non-polar polymer, which had been never reported before. The surface and structure of the nanotube and nanowire was characterized. The results showed the temperature had the major influence on one dimension nanostructure. At a low temperature only nanowire can be prepared, or the nanotube at a high temperature. It was also suggested that the high surface effects of nanometrie pores in AAO membrane and the energy of melting matters were the main driving forces to the formation of one-dimensional polymers.