|Title||Asphaltene: structural characterization, molecular functionalization, and application as a low-cost filler in epoxy composites|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Wu, HC, Kessler, MR|
|Type of Article||Article|
|Keywords||behavior, bitumen, boron-nitride, crude oils, morphology, nanocomposites, nuclear-magnetic-resonance, polymers, Spectroscopy, surface|
Asphaltene obtained by extraction from asphalt was investigated by different analytical techniques in order to characterize its composition, molecular structure and morphology. Then, the asphaltene molecules were successfully functionalized by 3-glycidyloxypropyltrimethoxysilane and 3-aminopropyltriethoxysilane as confirmed by thermogravimetric analysis, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. Finally, asphaltene/epoxy composites at four different loading levels were prepared and their thermo-mechanical properties were examined. The thermal analysis results indicated that asphaltene as a novel reinforcing filler in epoxy resin caused a significant increase in storage modulus of both glassy and rubbery regions, slightly increased the glass transition temperature without negatively affecting thermal stability, and reduced the overall cost of the material.
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