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The role of interface on dynamic mechanical properties, dielectric performance, conductivity, and thermal stability of electrospun carbon nanofibers reinforced epoxy
Author(s) -
Aziz Iram,
Duran Hatice,
Saleem Murtaza,
Yameen Basit,
Arshad Salman Noshear
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.26154
Subject(s) - materials science , epoxy , composite material , glass transition , dynamic mechanical analysis , ultimate tensile strength , thermal stability , nanocomposite , carbon nanofiber , thermal conductivity , nanofiber , modulus , conductivity , surface modification , polymer , chemical engineering , carbon nanotube , chemistry , engineering
Polymer nanocomposites containing pristine (PCNF) and amine‐functionalized (NFCNF) electrospun carbon nanofibers were fabricated. The amine‐terminated functional groups on CNFs, with a surface coverage of 2.76 mmol/g, react with the epoxy monomers forming covalent linkages for better dispersion and stronger interface. The improved load transfer resulted in an improvement of 82% in storage modulus (rubbery region~70°C) and 20°C increase in the glass transition temperature for 1 wt% NFCNF‐epoxy. Tensile strength and modulus improves by 22% and 27%, respectively, for 2 wt% NFCNF‐epoxy. The thermal stability, dielectric properties and AC/DC conductivity are discussed in terms of the interfacial characteristics. These results highlight the potential of electrospun CNFs as structural and functional reinforcement.