Polymer mica : layered polymer with nanometer sized interlayer gaps

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DOIResolve DOI: http://doi.org/10.1023/A:1021819004881
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Journal titleJournal of Materials Science Letters
Pages135137; # of pages: 3
Subjectlayered polymer; nanometer; polymer mica; chain-entanglement
AbstractThe unique stacked-layers structure of naturally occurring mineral mica is largely responsible for its good thermal and electrical properties. We have been able to create a corresponding structure in polymers with similar results. Layered polymers with nanometer sized interlayer gaps filled with gas have been produced such that the energy transfer between the polymer layers has to occur through the intervening gas layer, thereby giving this morphology superior insulation properties. The insulation efficiency of layered polymers is much higher than that of polymer foams whose properties are density dependent. The layered structure is achieved by first making a template containing regions of weak chain-entanglements and then severing these entanglements by gas nucleation and expansion. A typical morphology consists of stacked polymer layers, around 10 μm thick, and the interlayer gaps, about a few nanometer thick. It is similar in appearance to mica, but can be produced in a controlled way. Here we present the technique for producing the multilayered polymer, and the unique properties associated with such structures.
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AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
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Peer reviewedYes
NRC number44388
NPARC number12744430
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Record identifiera0014175-361c-4b43-a9e0-15369dab39fb
Record created2009-10-27
Record modified2016-05-09
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