纳米微晶纤维素/石墨烯柔性导电薄膜的制备与表征  

Preparation and Characterization of Nanocrystalline Cellulose/Graphene Flexible Conductive Films

作　　者：张馨琪 黄彪彪 赵若男 陈春桃 唐艳军[1,2,3] ZHANG Xin-qi;HUANG Biao-biao;ZHAO Ruo-nan;CHEN Chun-tao;TANG Yan-jun(Pulp and Papermaking Institute, College of Materials ＆ Textiles, Zhejiang Sci-Tech University, Hangzhou, 310008 China;Key Lab of Biomass Energy and Material, Nanjing, 210000 China;Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, 510070 China)

机构地区：[1]浙江理工大学材纺学院制浆造纸研究所,杭州310008 [2]江苏省生物质能源与材料重点实验室,南京210000 [3]广东省新能源和可再生能源研究开发与应用重点实验室,广州510070

出　　处：《纸和造纸》2018年第2期10-16,共7页Paper and Paper Making

基　　金：浙江省公益技术应用研究计划项目(2016C31075);江苏省生物质能源与材料重点实验室开放基金(JSBEM201602);广东省新能源和可再生能源研究开发与应用重点实验室开放基金(Y607s11001)

摘　　要：以微晶纤维素为原料,采用酸水解法制备纳米微晶纤维素(NCC)悬浮液,基于真空抽滤法获得NCC薄膜。然后,以NCC为分散剂,并改变其加入量,制备石墨烯/NCC复合涂料液。最后,基于旋涂法将不同配方的石墨烯/NCC涂料液施涂在NCC膜的表面,获得NCC/石墨烯柔性导电薄膜。实验结果表明:添加NCC可有效地提高石墨烯的水相分散性;相比于纯NCC薄膜,NCC/石墨烯复合薄膜的电导率和力学性能均有所增强,但复合薄膜的透光率和热稳定性有所下降;与NCC薄膜相比较,NCC/石墨烯导电薄膜的抗张强度和弹性模量分别增加了207.1%和128.3%,NCC/石墨烯导电薄膜的电导率最大值可达到2.25 s·cm^(-1)。In the present work, NCC was initially prepared via sulfuric acid hydrolysis of microcrystalline cellulose, and then was used to form NCC films based on vacuum filtration. Moreover, the prepared NCC was subsequently used as dispersant for the production of graphene/NCC composite coating solution with different formulation. Afterwards, various graphene/NCC coating solution were evenly coated on the surface of NCC films to via spin coating method.The results showed that the addition of NCC was effective in improving the dispersion of graphene, which facilitated the enhancement of the conductivity and mechanical properties of NCC/graphene composite film, and led to the decrease in the transmittance and thermal stability of the composite film. Compared to the pure NCC films, the tensile strength and elastic modulus of NCC/graphene conductive films was increased by 207.1% and 128.3%, respectively. The maximum conductivity of NCC/graphene conductive films can reach 2.25 s·cm^-1.

关 键 词：纳米微晶纤维素 石墨烯 导电薄膜 涂料液 旋涂 

分 类 号：TS761.2[轻工技术与工程—制浆造纸工程]