Abstract
This study investigated differences in the thermo-mechanical properties of thermosetting polymer EPON 826 nanocomposites reinforced by modified nanofillers. Carbon nanotubes (CNTs) were modified by environmentally friendly plasma treatments. Composites containing various nitrogen doped CNTs were investigated by morphological and structural analysis, which confirmed that they provided better dispersion and stronger interfacial interaction with the epoxy matrix. In addition, the dynamic mechanical behavior and thermal conductivity were analyzed to understand the energy transfer mechanism in the nanocomposites. The thermal and mechanical properties of the Inductively coupled plasma treated CNTs (ICP-CNT) reinforced nanocomposites containing a high concentration of quaternary and pyridinic types were higher than that of mechanical shear force plasma treated CNTs (MSF-CNT). A molecular dynamics (MD) simulation was performed to support the experimental results and confirmed that controlling the type of nitrogen doping groups was important for improving the thermo-mechanical characteristics of CNT/epoxy nanocomposites.
Highlights
This study investigated differences in the thermo-mechanical properties of thermosetting polymer EPON 826 nanocomposites reinforced by modified nanofillers
The N1s peak was found in the spectra of the MSF-Carbon nanotubes (CNTs) and Inductively coupled plasma treated CNTs (ICP-CNT), which indicates that nitrogen was successfully doped onto the Multiwalled carbon nanotubes (MWCNTs) surface
This study investigated the thermo-mechanical properties of composite containing the modified MWCNTs with various types of nitrogen groups and an epoxy matrix
Summary
This study investigated differences in the thermo-mechanical properties of thermosetting polymer EPON 826 nanocomposites reinforced by modified nanofillers. Composites containing various nitrogen doped CNTs were investigated by morphological and structural analysis, which confirmed that they provided better dispersion and stronger interfacial interaction with the epoxy matrix. A molecular dynamics (MD) simulation was performed to support the experimental results and confirmed that controlling the type of nitrogen doping groups was important for improving the thermo-mechanical characteristics of CNT/epoxy nanocomposites. In many cases, the full potential applications of CNT composites are presently limited because the CNTs become entangled and agglomerated because of their size and large aspect ratio[5,6,7], which affect performance One solution for this problem includes exploring composite methods, which can result in a uniform dispersion of the CNTs in the polymer matrix[8]. In this study, doping effects on the structure and morphology of nanocomposites containing CNTs are in detail investigated to support a better understanding of the roles and design of environmentally friendly modifications
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