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Polymer mica : layered polymer with nanometer sized interlayer gaps

Par Conseil national de recherches du Canada

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DOITrouver le DOI : https://doi.org/10.1023/A:1021819004881
AuteurRechercher : 1; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
FormatTexte, Article
Sujetlayered polymer; nanometer; polymer mica; chain-entanglement
Résumé
The 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.
Date de publication
Condition d’accès
  • available
  • unlimited
  • public
Dans
  • Journal of Materials Science Letters 22, nº 2 (2003) : 135–137.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRCC 44388
NRCC 2003
Numéro NPARC12744430
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Identificateur de l’enregistrementa0014175-361c-4b43-a9e0-15369dab39fb
Enregistrement créé2009-10-27
Enregistrement modifié2020-04-02
Date de modification :