浸渍法改性纤维素薄膜制备及其pH响应中的应用  

Preparation of Cellulose Film Modified by Impregnation Method and its Application in Environmental Response

作　　者：吴豫嘉 孔林枫 王旭航 丁章帅 侯德发 郑云武[1] 林旭 刘灿[1,2] WU Yujia;KONG Linfeng;WANG Xuhang;DING Zhangshuai;HOU Defa;ZHEN Yunwu;LIN Xu;LIU Can(National and Local Joint Engineering Research Center for Efficient Utilization of Forestry Biomass Resources at Southwest Forestry University,Kunming 650224,China;Yunnan Huanuo Industry and Trade Co.,Ltd.,Xiangyun 672100,China)

机构地区：[1]西南林业大学林业生物质资源高效利用技术国家地方联合工程研究中心,云南昆明650224 [2]云南华诺工贸有限公司,云南祥云672100

出　　处：《纤维素科学与技术》2024年第2期1-7,共7页Journal of Cellulose Science and Technology

基　　金：云南省科技项目支持(202301AT070217;202101AT070041)。

摘　　要：纤维素作为一种广泛存在于自然界中的生物质材料,具有丰富的资源、可再生性和生物降解性等优点,但其绝缘性质限制了其在电子器件领域应用。文中以不同孔隙率的滤纸(纤维素薄膜)(FP)为基材,通过浸渍法将导电高分子聚(4-苯乙烯磺酸钠)(PSS)掺杂到滤纸中,制备了可导电的复合薄膜。进一步对复合薄膜的力学性能、结晶结构、热稳定性、电导率进行了测试,并在pH响应材料中进行了应用,探讨了不同孔径和不同改性剂掺杂量对纤维素导电薄膜电性能的影响。结果表明,PSS的浸渍提高了复合薄膜的力学性能和热稳定性。FP浸渍到7%PSS溶液中制备的PSS/FP膜表现出优异的导电性,最低阻抗为8.6×10^(4)Ω,可以快速灵敏地监测pH值的变化。本研究为纤维素改性导电薄膜的进一步发展和应用提供了参考和指导。Cellulose,as a widely existing biomass material in nature,has advantages such as abundant resources,renewability,and biodegradability.However,its insulation properties limit its application in the field of electronic devices.This article uses filter paper(cellulose film)with different porosity as the substrate,and doped conductive polymer poly(sodium 4-styrene sulfonate)into the filter paper through impregnation method to prepare conductive composite films.The mechanical properties,crystalline structure,thermal stability,and electrical conductivity of the thin film were tested and they were applied in pH responsive materials.The influence of different pore sizes and varying amounts of modifying agents on the electrical properties of cellulose conductive films was also explored.The following conclusion were drawn that the impregnation of PSS improved the mechanical properties and thermal stability of the composite film.The PSS/FP film prepared by impregnating FP into 7%PSS solution exhibits excellent conductivity,with a minimum impedance of 8.6×10^(4)Ω,and can quickly and sensitively monitor changes in pH value.The research provides reference and guidance for the further development and application of cellulose modified conductive films.

关 键 词：导电材料 纤维素 复合薄膜 电导率 响应器件 

分 类 号：TQ352[化学工程]