We describe a novel, facile method for the alignment of multi-walled carbon nanotubes (MWNTs) in a magnetic field facilitated by the decoration of the MWNTs with monodisperse γ-Fe2O3 magnetic (maghemite) nanoparticle...
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We describe a novel, facile method for the alignment of multi-walled carbon nanotubes (MWNTs) in a magnetic field facilitated by the decoration of the MWNTs with monodisperse γ-Fe2O3 magnetic (maghemite) nanoparticles. The tethering of the nanoparticles was achieved by the attachment of γ-Fe2O3 nanoparticles that were synthesized using a modified sol-gel process, onto the carboxylate-activated MWNTs. Sodium dodecylbenzene sulfonate (NaDDBS) was used to prevent the formation of an iron oxide 3D network. Various characterization methods were employed to confirm the formation of homogeneously-distributed and nearly-monodispersed iron oxide nanoparticles, and show that they were indeed tethered to the walls of the MWNTs. The γ-Fe2O3 nanoparticles imparted magnetic characteristics to the MWNTs, which in turn, were oriented parallel to the direction of an externally-applied magnetic field. This facile alignment of MWNT could promote the enhancement of various properties, e.g. mechanical and electrical properties, of the resulting composites. Moreover, this facile alignment at low magnetic fields, made possible by the magnetization of the carbon nanotubes through the tethering of maghemite nanoparticles, may be applied to a variety of other useful nanofillers, such a glass fibers, clay nanoparticles and cellulose nanowhiskers.
The development of a multiline, refreshable Braille display will assist with the full inclusion and integration of blind people into society. The use of both polyvinylidene fluoride (PVDF) film planar bending mode act...
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Nanostructured organic materials derived from block copolymers solvated by block-selective solvents have shown considerable potential as versatile dielectric elastomers. These materials can easily be tuned to achieve ...
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The study is describing Nylon yarn, though with low weight (specific weight 1.14), good elongation and high strength (4.59.5 g/d). Through the combination of irregular section long staple fiber to reach the core yarn,...
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The influence of interface coherence between organic polymer matrix and metal/metal oxide reinforcement is investigated, based on the anchoring density at the interface. Methods of increasing anchoring density, as wel...
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The influence of interface coherence between organic polymer matrix and metal/metal oxide reinforcement is investigated, based on the anchoring density at the interface. Methods of increasing anchoring density, as well as the resulting enhanced mechanical properties are also proposed.
Multiwall Carbon nanotubes (MWNTs)/cellulose composite fibers were prepared using solution spinning with cellulose dissolved in 1-ethyl-3-methyl imidazolium acetate (EMI-Ac). MWNTs in different concentrations were use...
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Multiwall Carbon nanotubes (MWNTs)/cellulose composite fibers were prepared using solution spinning with cellulose dissolved in ethyl-methyl imidazolium acetate (EMI-acetate). MWNTs in different concentrations were us...
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ISBN:
(纸本)9781934551059
Multiwall Carbon nanotubes (MWNTs)/cellulose composite fibers were prepared using solution spinning with cellulose dissolved in ethyl-methyl imidazolium acetate (EMI-acetate). MWNTs in different concentrations were used to make cellulose/MWNT composite solutions in ethylmethyl imidazoluim acetate (EMI-acetate). MWNT form above 0.0007 mass fraction form a network. Scanning electron microscopy images of cellulose fibers show very high alignment of MWNTs in the fiber axis direction. Moderate improvement (30%) in the tensile strength of MWNT/cellulose composite fibers was observed by adding up to 0.07 mass fraction MWNTs as compared to neat cellulose fibers.
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