Interphase Creation in Polymer Nanocomposites

Polymer nanocomposites are the basis of multi-functional materials with excellent thermal and mechanical properties. One mechanism of enhanced properties is the creation of interphase, a region of altered polymer matrix near the nanoparticle surface. NU-MRSEC researchers used an elegant method to investigate the role that crosslink density of the polymer network plays in creation of the interphase. This work impacts fundamental polymer science, as well as industrial applications. The figure below demonstrates the three mechanisms by which nanoparticles can change the dynamics of the polymer matrix in crosslinked nanocomposites.

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Karl W. Putz, Marc J. Palmeri, Rachel B. Cohn, Rodney Andrews, L. Catherine Brinson, “Effect of Crosslink Density on Interphase Creation in Polymer Nanocomposites," Macromolecules, 41(18), 6752-6756 (2008). ABSTRACT

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The Materials Research Science and Engineering Center (MRSEC) is supported by the National Science Foundation under NSF Award Number DMR-0520513. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of the National Science Foundation.
© 2008 Northwestern University