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柔性导电纳米纤维膜在可穿戴电子设备领域的应用非常广泛，而良好的拉伸性能是静电纺纳米纤维膜商业化的必备性能之一。以纤维素纳米晶(cellulose nanocrystal, CNC)为增强材料，通过对含CNC的PAN溶液的静电纺丝及碳纳米管(carbon nanotube, CNT)水分散液的浸渍处理，成功制备了柔性导电聚丙烯腈(polyacrylonitrile, PAN)/CNC@CNT纳米纤维膜。对该纳米纤维膜的结构和性能进行研究。结果表明：随着纺丝液中PAN质量分数的增加，纺丝液的黏度增加，纤维直径增加。当PAN质量分数为12%时，可成功制备不同CNC质量分数的PAN/CNC纳米纤维膜。CNC的添加对PAN/CNC纳米纤维膜的结构和性能产生了影响。随着CNC质量分数的增加，纤维直径增加，直径分布范围变宽，拉伸强度先提高后降低。当PAN与CNC的质量比为4∶1时，PAN/CNC纳米纤维膜的拉伸强度最高，明显高于PAN纳米纤维膜。经过CNT水分散液浸渍处理得到的PAN/CNC@CNT纳米纤维膜的拉伸强度增加至3.12 MPa,表面电阻率为64Ω/cm2。柔性导电纳米纤维膜有望广泛应用于储能、传感等领域，该研究结果可为上述领域的研究提供一定的基础。
Abstract：The flexible conductive nanofiber membrane is widely used in the field of wearable electronics. High tensile properties of electrospun nanofiber membranes are essential for their successful commercial application. With cellulose nanocrystal(CNC) as the reinforcement, the flexible conductive polyacrylonitrile(PAN)/CNC@carbon nanotube(CNT) nanofiber membrane is electrospun from the PAN solution containing suspended CNC and impregnated with the CNT solution. The structure and properties of nanofiber membranes are studied. The results show that with the increase of the PAN mass fraction, the viscosity of the electrospinning solution increases, leading to an increase in the nanofiber diameter. When the mass fraction of PAN is 12%, PAN/CNC nanofiber membranes at different CNC mass fractions are successfully prepared. The structure and properties of PAN/CNC nanofiber membranes are affected by the addition of CNC. As the CNC mass fraction increases, the nanofibers become thicker, the nanofiber diameter distribution widens, and the tensile strength first increases and then decreases. When the mass ratio of PAN to CNC is 4 ∶1, the tensile strength of the PAN/CNC nanofiber membrane is the highest, and it is higher than that of the PAN nanofiber membrane. After impregnating the PAN/CNC nanofiber membrane with CNTs, the tensile strength of the nanofiber membrane increases to 3. 12 MPa and the surface resistivity is 64 Ω/cm2. The flexible conductive nanofiber membranes would be used in energy storage and sensing fields, and the study might provide a strong base for their future development.
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基本信息:
DOI：10.19884/j.1672-5220.202501015
中图分类号:TB383.2
引用信息:
[1]张长欢,王刘瑶,王浩文,等.纤维素纳米晶提高柔性导电聚丙烯腈@碳纳米管纳米纤维膜的拉伸性能（英文）[J].Journal of Donghua University(English Edition),2025,42(02):116-123.DOI:10.19884/j.1672-5220.202501015.
基金信息:
Beijing Municipal Education Commission,China (Nos. KM202210012009 and 202410012002); National Natural Science Foundation of China (No.52202015); Project of Constructing the Emerging Interdisciplinary Platform Based on “Clothing Science” of Beijing Institute of Fashion Technology,China (No.11000024T000003073871); XXX Key Laboratory of China (No.HTKJ2024KL703002)
2025-04-28
2025-04-28
2025-04-28