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Murari L. Gupta, Stefanie A. Sydlik, Jan M. Schnorr, Dong Jin Woo, Sebastian Osswald, Timothy M. Swager and Dharmaraj Raghavan The effect of mixing methods on the dispersion of carbon nanotubes during the solvent-free processing of multiwalled carbon nanotube/epoxy composites Journal of Polymer Science Part B: Polymer Physics 51

Version of Record online: 10 DEC 2012 | DOI: 10.1002/polb.23225

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Despite the success in functionalizing multi-walled carbon nanotubes (MWCNTs) with desired chemical groups, engineering good dispersion and orientation of functionalized MWCNTs in resin remains a challenge. In this work, an effective dispersion of nanotubes in epoxy was achieved by a combination of microfluidic processing and planetary shear mixing. An improved dispersion of MWCNTs in processed samples resulted in an increase in tensile strength of the epoxy resin while the poor dispersion of nanotubes resulted in reduction in the tensile strength of the resin.

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