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<p>Uniform microporous carbon nanofibers (CNFs) are attractive because an increased specific surface area facilitates transport of ions, electrons, and molecules, which benefits adsorption, filtration, and energy-storage applications. In this study, a polyacrylonitrile/resorcinol–formaldehyde (PAN/RF) composite membrane is prepared by incorporating RF aerogel into a hydrolyzed electrospun PAN membrane. The hydrolysis of PAN promotes oxidative stabilization at reduced temperature and increases mechanical integrity of the fibrous network. Strong hydrogen bonding between the hydrolyzed PAN surface and hydrophilic RF domains enhances the elastic modulus and viscoelastic response. The resulting physical interactions improve thermal resistance through increased energy dissipation under load. The PAN/RF membrane exhibits approximately twice the specific surface area of the PAN control and a uniform micropore distribution. The fabrication route provides a promising pathway for membranes that require high mechanical resilience, thermal stability, and large accessible surface area.</p>

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Highly Porous and Viscoelastic Polyacrylonitrile Carbon Nanofiber Membrane with Interconnected Network of Resorcinol-Formaldehyde Carbon Aerogels

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Byungwook Youn,
  • Junyeong Jeong,
  • Youngho Han,
  • Yangyul Ju,
  • Kwang Youn Cho,
  • Doojin Lee

摘要

Uniform microporous carbon nanofibers (CNFs) are attractive because an increased specific surface area facilitates transport of ions, electrons, and molecules, which benefits adsorption, filtration, and energy-storage applications. In this study, a polyacrylonitrile/resorcinol–formaldehyde (PAN/RF) composite membrane is prepared by incorporating RF aerogel into a hydrolyzed electrospun PAN membrane. The hydrolysis of PAN promotes oxidative stabilization at reduced temperature and increases mechanical integrity of the fibrous network. Strong hydrogen bonding between the hydrolyzed PAN surface and hydrophilic RF domains enhances the elastic modulus and viscoelastic response. The resulting physical interactions improve thermal resistance through increased energy dissipation under load. The PAN/RF membrane exhibits approximately twice the specific surface area of the PAN control and a uniform micropore distribution. The fabrication route provides a promising pathway for membranes that require high mechanical resilience, thermal stability, and large accessible surface area.