【摘要】 用聚乙烯醇(PVA)为原料,以新鲜芋头叶为模板,制备出与芋头叶表面反相结构的PVA阴膜。通过测量得到,新鲜芋头叶表面与水滴的接触角为138.1°,PVA阴膜与水滴的接触角为121.1°,光滑PVA与水滴的接触角为39.8o。用聚氯乙烯(PVC)为原料,以PVA阴膜为模板,利用软印刷方法 ,复制出仿芋头叶强疏水的PVC薄膜,其表面与水滴的接触角为126.4°,而光滑PVC薄膜与水滴的接触角为88.9°。使用磁控溅射法,在PVA阴膜上镀Cu,制备出以PVA阴膜为底、表面为Cu的阴膜。用PVC为原料,以Cu阴膜为模板,利用硬印刷的方法,复制出仿芋头叶强疏水表面的PVC薄膜,其表面与水滴的接触角为134.3°。实验结果表明,利用软硬两种印刷法制备出仿芋头叶表面结构的PVC薄膜,都具有与芋头叶一样的强疏水性,且硬印刷法制备出仿芋头叶表面结构的PVC薄膜的疏水性更佳。更多还原

【Abstract】 The polyvinyl alcohol( PVA) negative film of the anti-structure on taro leaf surface was prepared by the lithography. The contact angles of water droplet on the natural taro leaf surface,PVA negative film surface and smooth PVA surface were 138.1°,121.1°and 39.8°, respectively. The poly(vinyl chloride)(PVC) film of strong hydrophobic taro-leaf-like surface was prepared on the PVA negative film by the soft lithography, the contact angles of water droplet on the PVC film of the taro-leaf-like surface and smooth PVC surface were 126.4°and 88.9°, respectively. Another taro-leaf-like Cu negative film had been successfully prepared on PVA negative film by magnetron sputtering. Based on the hard lithography, a strong hydrophobic taro-leaf-like PVC film had been obtained using the Cu negative film as template, its water droplet contact angle was 134.3°. The experiment results showed that the taro-leaf-like PVC films fabricated by soft and hard lithography had same strong hydrophobicity as natural taro leaf, but the hydrophobicity of the taro-leaf-like PVC film fabricated by hard lithography was more excellent than the taro-leaf-like PVC films fabricated by soft lithography.更多还原