Nanoporous multilayer structures induced in Cyclo-Olefin copolymers : Structural characteristics and optical properties

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ConferenceFOAMS 2009: Seventh International Conference on Foam Materials & Technology, 2009-09-16, Iselin, USA
Pages# of pages: 8
AbstractUnusual structures consisting of alternating stacks of 200 nm-thick nanoporous and 5 to 20 μm-thick pore-free layers were obtained with cyclo-olefin copolymer thin sheets. Such copolymer is well-known for its remarkable optical properties. The structural configurations induced during foaming provide high reflectivity in the visible spectrum along with partial transmittance in the UV and visible ranges depending on the microstructural characteristics of the porous layers. Adequate load applied to the sheet can nevertheless eliminate this reflectivity as these low-density foamed layers remain very pressuresensitive. It is postulated that the mechanisms leading to such an intriguing structure is related to a spinodal decomposition.
Publication date
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number52347
NPARC number9323246
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Record identifier6f3cb727-04e6-415b-a8a8-849b2b54abd2
Record created2009-10-02
Record modified2016-05-09
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