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      Ultrastrong and stiff layered polymer nanocomposites.

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          Abstract

          Nanoscale building blocks are individually exceptionally strong because they are close to ideal, defect-free materials. It is, however, difficult to retain the ideal properties in macroscale composites. Bottom-up assembly of a clay/polymer nanocomposite allowed for the preparation of a homogeneous, optically transparent material with planar orientation of the alumosilicate nanosheets. The stiffness and tensile strength of these multilayer composites are one order of magnitude greater than those of analogous nanocomposites at a processing temperature that is much lower than those of ceramic or polymer materials with similar characteristics. A high level of ordering of the nanoscale building blocks, combined with dense covalent and hydrogen bonding and stiffening of the polymer chains, leads to highly effective load transfer between nanosheets and the polymer.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Oct 05 2007
          : 318
          : 5847
          Affiliations
          [1 ] Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA.
          Article
          318/5847/80
          10.1126/science.1143176
          17916728
          ed47fbc9-b33f-4cd9-a62a-bc094800fc6a
          History

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