聚苯胺/MXene@聚丙烯复合非织造柔性pH值传感器的制备及其传感性能  

Preparation and sensing performance of a PANI/MXene@PP complex nonwoven flexible pH sensor

作　　者：朱祥祥 孙辉[1,2] 于斌 ZHU Xiangxiang;SUN Hui;YU Bin(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Provincial Center of Advanced Textile Technology,Shaoxing 312000,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312000

出　　处：《浙江理工大学学报（自然科学版）》2024年第4期419-426,共8页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省自然科学基金项目(LTGS23E030005);浙江省“高层次特殊人才支持计划”科技创新领军人才项目(2021R52031)。

摘　　要：为制备基于聚丙烯纺黏非织造材料(Polypropylene spunbonded nonwoven fabric,PP SF)的双电极柔性pH值传感器,在PP SF表面涂覆油性聚氨酯(Oil-based polyurethane,OPU),制备得到OPU/PP SF,采用丝网印刷技术将作为参比电极的银/氯化银(Ag/AgCl)浆料和导电碳浆料分别移印至OPU/PP SF表面;利用化学氧化聚合法制备了酸掺杂聚苯胺(Polyaniline,PANI),将其与经超疏水改性的F-Ti_(3)C_(2)T_(x)MXene结合,再涂覆在C层表面,形成PANI/F-Ti_(3)C_(2)T_(x)MXene@PP SF柔性pH值传感器。结果表明:PANI/F-Ti_(3)C_(2)T_(x)MXene@PP SF柔性pH值传感器表面呈现珊瑚状结构,在pH值为2~10时,PANI/F-Ti_(3)C_(2)T_(x)MXene@PP SF柔性pH值传感器表现出良好的力学性能,其拉伸强度和断裂伸长率均比PP SF有所提高,灵敏度(-37.07 mV/pH)高,线性度(R2=0.98)好,具有低电位变化率(0.092 mV/h)和良好的重现性(灵敏度标准偏差为0.36%)。该研究可为基于聚丙烯纺黏非织造材料基材的柔性pH值传感器的研究提供参考。To prepare a dual-electrode flexible pH sensor based on polypropylene spunbonded nonwoven fabric(PP SF),an oil-based polyurethane(OPU)coating was initially applied to the surface of PP SF,and the OPU/PP SF was fabricated.Subsequently,screen printing technology was employed to transfer the reference electrode of silver/silver chloride paste(Ag/AgCl),and conductive carbon paste(C),respectively onto the OPU/PP SF surface.Next,acid-doped polyaniline(PANI)prepared via chemical oxidative polymerization and the superhydrophobically modified F-Ti_(3)C_(2)T_(x) MXene were coated on the carbon layer to form the PANI/F-Ti_(3)C_(2)T_(x) MXene@PP SF flexible pH sensor.The results indicate that the surface of the obtained PANI/F-Ti_(3)C_(2)T_(x) MXene@PP SF flexible pH sensor exhibits a coral-like structure.Within the pH range of 2 to 10,the PANI/F-Ti_(3)C_(2)T_(x) MXene@PP SF flexible pH sensor demonstrates excellent mechanical properties(with higher tensile strength and elongation at break than those of PP SF),high sensitivity(-37.07 mV/pH),and good linearity(R~2=0.98).Furthermore,this flexible pH sensor has low potential change rate(0.092 mV/h)and excellent reproducibility(with a sensitivity standard deviation of 0.36%).This study might serve as reference for the research of flexible pH sensors based on PP SF substrate.

关 键 词：聚丙烯纺黏非织造材料 柔性pH值传感器 聚苯胺 MXene 银/氯化银 丝网印刷 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TS176[自动化与计算机技术—控制科学与工程]