Zaporotskova Irina, Kakorina Olesya, Kozhitov Lev, Muratov Dmitriy, Boroznina Natalia, Boroznin Sergei, Panchenko Alexandra
Institute of Priority Technologies, Volgograd State University, Universitetskii Prospect, 100, Volgograd 400062, Russia.
Institute of New Materials, National Research Technological University "MISIS", Leninsky Prospekt, 4, Moscow 119049, Russia.
Polymers (Basel). 2024 May 7;16(10):1308. doi: 10.3390/polym16101308.
The paper investigates the possibility of fabricating a carbon nanotubes (CNT)-modified nanocomposite based on pyrolyzed polyacrylonitrile (PPAN). The layered structure of PPAN ensures the attachment of nanotubes (NT) to the polymer matrix, forming enhanced PPAN/CNT nanocomposites. We synthesized a PPAN/CNT polymer nanocomposite and investigated its mechanical, conductive, and electronic properties. Using the quantum chemical method density functional theory (DFT), we studied an interaction mechanism between PPAN and single-walled carbon nanotubes. We described the structural features and electron energy structure of the obtained systems. We found that the attachment of a CNT to the PPAN matrix increases tensile strength, electrical conductivity, and thermal stability in the complex. The obtained materials were exposed to electromagnetic radiation and the dielectric constant, reflection, transmission, and absorption coefficients were measured. The study demonstrates the possibility of using carbon nanotubes for reinforcing polyacrylonitrile polymer matrix, which can result in the development of an enhanced class of materials possessing the properties of both polymers and CNTs.
本文研究了基于热解聚丙烯腈（PPAN）制备碳纳米管（CNT）改性纳米复合材料的可能性。PPAN的层状结构确保了纳米管（NT）附着在聚合物基体上，形成增强的PPAN/CNT纳米复合材料。我们合成了一种PPAN/CNT聚合物纳米复合材料，并研究了其力学、导电和电子性能。使用量子化学方法密度泛函理论（DFT），我们研究了PPAN与单壁碳纳米管之间的相互作用机制。我们描述了所得体系的结构特征和电子能量结构。我们发现，CNT附着在PPAN基体上可提高复合材料的拉伸强度、电导率和热稳定性。对所得材料进行电磁辐射处理，并测量其介电常数、反射率、透射率和吸收率。该研究证明了使用碳纳米管增强聚丙烯腈聚合物基体的可能性，这可能会开发出一类兼具聚合物和CNT性能的增强材料。
