Enhancing the Electrical Conductivity and Strength of PET by Single-Wall Carbon Nanotube Film Coating

作者：Wutong Ding, Xin-Yu Jiao, Yi-Ming Zhao, Xinyang Sun, Chao Chen, Anping Wu, Yutian Ding, Peng‐Xiang Hou, Chang Liu · 发表于：ACS Applied Materials & Interfaces · 年份：2023 · DOI：10.1021/acsami.3c06671 · 被引用次数：32 · 研究领域：Carbon Nanotubes in Composites、Graphene research and applications、Polymer Nanocomposite Synthesis and Irradiation

Single-wall carbon nanotubes (SWCNTs) with excellent physicochemical properties are considered a promising candidate for the electrical and mechanical reinforcements of polymers. However, the poor dispersion of SWCNTs in plastics seriously limits their application and their achieved performance enhancement. Here, we coat a freestanding, highly conductive SWCNT film onto the surface of a polyethylene terephthalate (PET) film by a hot-pressing method. Due to the uniform SWCNT network structure and strong interfacial interaction, the SWCNT/PET hybrid film showed notably enhanced electrical and mechanical properties even though with a very low SWCNT weight fraction of 0.066%. The surface square resistance of the SWCNT/PET film decreased to 120–140 Ω/□ from 10 16 Ω. In addition, Young’s modulus and tensile strength of the SWCNT/PET film reached 4.6 GPa and 148 MPa, which are 31.3 and 24.4%, respectively, higher than the pure PET film. The SWCNT/PET film shows excellent mechanical durability and thermal stability, demonstrating its potential use as an antistatic material.