Origin of high thermal conductivity in disentangled ultra-high molecular weight polyethylene films: ballistic phonons within enlarged crystals
Taeyong Kim,
Stavros X. Drakopoulos,
Sara Ronca
et al.
Abstract:The thermal transport properties of oriented polymers are of fundamental and practical interest.High thermal conductivities ( 50 Wm −1 K −1 ) have recently been reported in disentangled ultrahigh molecular weight polyethylene (UHMWPE) films, considerably exceeding prior reported values for oriented films. However, conflicting explanations have been proposed for the microscopic origin of the high thermal conductivity. Here, we report a characterization of the thermal conductivity and mean free path accumulation… Show more
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