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Polyetherimide (PEI) nanocomposite with WS2 nanotubes
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DOI：10.1039/d4nr00818a.png)
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Abstract
En 中文
Nanocomposite materials, integrating nanoscale additives into a polymer matrix, hold immense promise for their exceptional property amalgamation. This study delves into the fabrication and characterization of polyetherimide (PEI) nanocomposite strings fortified with multiwall WS2 nanotubes. The manufacturing process capitalizes on the preferential alignment of WS2 nanotubes along the string axis, corroborated by scanning electron microscopy (SEM). Mechanical measurements unveil a remarkable acceleration of strain hardening in the nanocomposite strings, chiefly attributed to the WS2 nanotubes. Structural analyses via X-ray diffraction (XRD) and wide-angle X-ray scattering (WAXS) reveal intriguing structural alterations during tensile deformation. Notably a semi-crystalline framework similar to 100 nm in diameter surrounding the WS2 nanotubes emerges, which is stabilized by the pi-pi interactions between the PEI chains. The amorphous majority phase (97% by volume) undergoes also major structural changes upon strain becoming more compact and closing-up of the distance beweeetn the PEI chains. Dynamic mechanical analysis (DMA) demonstrates improved thermal stability of the evolved semi-crystalline pi-pi oriented PEI molecules, characterized by delayed thermal structural melting, underscoring the pivotal role of the WS2 nanotubes in reinforcing the nanocomposite. The insight gained in this study of WS2 nanotube-reinforced PEI nanocomposite strings, could offer diverse applications for such tailor-made polymeric materials.
Keywords:
POLYMER NANOCOMPOSITES
CARBON NANOTUBES
CRYSTALLIZATION
COMPOSITE
BEHAVIOR
FUNCTIONALIZATION
PERFORMANCE
GRAPHENE
INT-WS2
GROWTH
Journal
IF:
5.1
Papers:
3.0W
Citations:
11.6W