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Mohammad Naraghi, Graham H. Bratzel, Tobin Filleter, Zhi An, Xiaoding Wei, SonBinh T. Nguyen, Markus J. Buehler and Horacio D. Espinosa Atomistic Investigation of Load Transfer Between DWNT Bundles “Crosslinked” by PMMA Oligomers Advanced Functional Materials 23

Article first published online: 6 NOV 2012 | DOI: 10.1002/adfm.201201358

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In situ chemical vapor deposition functionalization of CNT bundles by PMMA-like oligomers enhances the shear strength of the bundle junctions by about an order of magnitude compared with “bare” van der Waals (vdW) interactions between pristine CNTs. Through a combination of nanomechanics experimental studies and multiscale simulations, the enhancement of shear strength is attributed to an interlocking mechanism of polymer chains in the bundles, dominated by vdW interactions, and stretching and alignment of chains during shearing.

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