纤维素/ZnO压电纸的制备与性能

Preparation and properties of cellulose/ZnO piezoelectric papers

采用粉碎和溶解的方式制备了两种不同的纤维素/ZnO压电纸。通过SEM和压电性能测试对压电纸进行分析,探究了两种压电纸的结构与性能的差别。讨论了ZnO添加量、压电纸的厚度以及压力对压电性能的影响,并与购买的聚偏氟乙烯(PVDF)膜的压电性能进行对比。结果表明,利用溶解的方式制备的压电纸的纤维更加光滑,与ZnO结合的更加紧密,使ZnO均匀的包覆在纤维素表面。压力越大,压电性能越高。压电纸越厚,压电性能越高。用溶解的方式制备的ZnO添加量为20%的压电纸具有较高的压电性能,最大输出电流为52.36 nA/cm^(2)。压电纸的压电性能与购买的PVDF膜相当。

Two kinds of cellulose/ZnO piezoelectric papers are prepared by crushing and dissolving methods.The papers are characterized by SEM and analyzed by a piezoelectric equipment.The differences in the structure and piezoelectric performance of the two kinds of papers are explored.The effects of ZnO addition amount,thickness of the papers,and pressure on the piezoelectric properties are discussed and compared with a PVDF film.The results show that the fibers of the piezoelectric paper prepared by the dissolving method are smooth and tightly bounded to ZnO,which makes ZnO uniformly coat on the surface of the fibers.The higher the pressure,the higher the piezoelectric properties.The thicker the piezoelectric paper,the higher the piezoelectric properties.The piezoelectric paper with 20%ZnO added by the dissolving method has high piezoelectric properties,and the maximum output current is 52.36 nA/cm^(2).The piezoelectric properties of the piezoelectric paper are comparable to the purchased PVDF film.