Structural, thermal, and tribological properties of intercalated polyoxymethylene/molybdenum disulfide nanocomposites

Intercalated polyoxymethylene (POM)/molybdenum disulfide (MoS₂) nanocomposites were prepared by in situ intercalation/polymerization. The structures of the composites were characterized by means of powder X-ray diffraction (XRD) and transmission electron microscopy. The XRD pattern showed that the p...

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Bibliographic Details
Published in:Journal of applied polymer science 2008-10, Vol.110 (1), p.91-96
Main Authors: Wang, J, Hu, K.H, Xu, Y.F, Hu, X.G
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
inorganic materials
mechanical properties
nanocomposites
particle size distribution
Polymer industry, paints, wood
Technology of polymers
thermal properties
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Summary:Intercalated polyoxymethylene (POM)/molybdenum disulfide (MoS₂) nanocomposites were prepared by in situ intercalation/polymerization. The structures of the composites were characterized by means of powder X-ray diffraction (XRD) and transmission electron microscopy. The XRD pattern showed that the polymer was inserted into the MoS₂ galleries. The interlayer spacing of the intercalated phase increased from 6.15 to 11.18 Å. The thermal behavior of the composites was also investigated through thermogravimetric analysis. The results show that the heat resistance of the intercalated composites decreased slightly. The tribological behavior of POM/MoS₂ was investigated on an MQ-800 end-face tirbometer under dry friction. The worn surfaces were observed by scanning electron microscopy. The results show that POM/MoS₂ presented better friction reduction and wear resistance, especially under high load. The friction mechanism of the nanocomposites is also discussed in association with X-ray photoelectron spectroscopy.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.28519