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Modification of carbon nanotubes and its effect on properties of carbon nanotube/epoxy nanocomposites
Author(s) -
Špitalský Zdenko,
Matějka Libor,
Šlouf Miroslav,
Konyushenko Ele.,
Kovářová Jana,
Zemek Josef,
Kotek Jiří
Publication year - 2009
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.20701
Subject(s) - carbon nanotube , materials science , nanocomposite , epoxy , surface modification , composite material , nanotube , thermogravimetry , thermal stability , mechanical properties of carbon nanotubes , polyaniline , selective chemistry of single walled nanotubes , polymer , chemical engineering , optical properties of carbon nanotubes , polymerization , engineering
Abstract We have studied an effect of three types of modifications of carbon nanotubes (CNTs) on dispersion and mechanical properties of final epoxy‐amine based nanocomposites. First approach includes end‐walled covalent chemical modification at the ends of nanotubes. The second one is side‐walled covalent chemical modification along the whole length of nanotubes. The third procedure is noncovalent, physical modification done by the CNT surface coating with polyaniline. The modification of nanotubes was determined by X‐ray photoelectron spectroscopy. The prepared epoxy‐amine nanocomposites were characterized by dynamic‐mechanical analysis, tensile testing, light microscopy, transmission electron microscopy, and thermogravimetry. We observed an improvement of the mechanical properties and the thermal stability by addition of the carbon nanotubes to the epoxy matrix. The strong interactions between the nanotube and the polymer matrix were discovered in the nanocomposites with physically modified nanotubes. POLYM. COMPOS., 2009. © 2008 Society of Plastics Engineers