Interfaces between inorganic materials and anharmonic polymers have potentially intriguing thermal transport behavior. The low thermal conductivity of amorphous polymers limits significant interfacial effects to polymer film thicknesses of only a few nanometers. We use time-domain thermoreflectance to directly measure interfacial effects in the thermal conductance of spun-cast poly(methyl methacrylate) (PMMA) thin films and PMMA brushes "grafted-from" the substrate. PMMA brushes are expected to have polymer chains partially aligned perpendicular to the substrate, yet only a modest increase (13%) in thermal conductivity is observed over spun-cast layers. © 2010 American Institute of Physics.
CITATION STYLE
Losego, M. D., Moh, L., Arpin, K. A., Cahill, D. G., & Braun, P. V. (2010). Interfacial thermal conductance in spun-cast polymer films and polymer brushes. Applied Physics Letters, 97(1). https://doi.org/10.1063/1.3458802
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