Origins of elastic properties in ordered nanocomposites

Details Origins of elastic properties in ordered nanocomposites Origins of elastic properties in ordered nanocomposites

2004-02-21

arxiv.org/abs/cond-mat/0402539v1

Nano Letters 4, 2455 (2004)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1021/nl048407f

We predict a diblock copolymer melt in the lamellar phase with added spherical nanoparticles that have an affinity for one block to have a lower tensile modulus than a pure diblock copolymer system. This weakening is due to the swelling of the lamellar domain by nanoparticles and the displacement of polymer by elastically inert fillers. Despite the overall decrease in the tensile modulus of a polydomain sample, the shear modulus for a single domain increases dramatically.

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