细菌纤维素/聚吡咯导电复合膜制备与探讨  

Preparation and discussion of bacterial cellulose/polypyrrole conductive composite film

作　　者：郭琳 邓龙芝 余杰 潘家乐 朱雄伟 GUO Lin;DENG Longzhi;YU Jie;PAN Jiale;ZHU Xiongwei(Wuhan Institute of Technology,School of Environmental Ecology and Bioengineering,Wuhan 430200,China)

机构地区：[1]武汉工程大学环境生态与生物工程学院,武汉430200

出　　处：《膜科学与技术》2024年第2期118-124,共7页Membrane Science and Technology

摘　　要：超级电容器是一种新型的储能装置,由载体、高分子导电材料、氧化剂等组成,细菌纤维素膜韧性好、孔隙率优良,现已作为一种载体材料.本研究选用葡糖醋杆菌在特定培养基培养生长形成细菌(BC)纤维素膜,提取加工后与聚吡咯(PPy)和氧化剂原位聚合,以FeCl_(3)作为氧化剂使不同浓度的吡咯聚合附着在其表面形成超级电容器,通过傅里叶红外光谱分析,再根据渗流理论探讨膜的电导率与孔隙率的变化规律,最后测出含电量的变化.研究结果表明:BC/PPy复合膜孔隙率与电导率并不成正比关系,孔隙率在25%~30%内,其电导率最大,0.01 mol/L浓度聚吡咯的孔隙率最大为60.05%,电导率却最小(1×10^(-6)S/m),0.06 mol/L浓度聚吡咯孔隙率为23.04%,却获得了最大的电导率(2.6×10^(-1)S/m).Supercapacitor is a new type of energy storage device,consisting of carrier,polymer conductive material,oxidant,etc.In terms of carrier,bacterial cellulose film with good toughness and excellent porosity has been used as a substrate material.In this study,Bacillus glucoaceticus was selected to grow in specific medium to form bacterial cellulose material film,extracted and processed with polypyrrole(PPy)and oxidant in situ polymerization,FeCl_(3) was used as oxidant The membrane was then extracted and processed with polypyrrole(PPy)and oxidant in situ,and FeCl_(3) was used as the oxidant to polymerise and attach different concentrations of pyrrole to its surface to form a supercapacitor.The results show that the porosity and conductivity are not proportional to each other,with the maximum conductivity within 25%30%porosity,the maximum porosity of 60.05%for 0.01 mol/L concentration polypyrrole but the minimum conductivity(1×10^(-6)S/m),and the maximum conductivity obtained for 0.06 mol/L concentration polypyrrole with 23.04%porosity(2.6×10^(-1)S/m).

关 键 词：细菌纤维素膜 聚吡咯 孔隙率 渗流理论 

分 类 号：TQ3117[化学工程—高聚物工业]