Thermal Conductivity of Self-Assembling Symmetric Block Copolymer Thin Films of Polystyrene-Block-Poly(methyl methacrylate)
| Autor: | Mark A. Rodriguez, Michael S. Kent, Geoff L. Brennecka, Patrick E. Hopkins, Matthew C George |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Mechanical Engineering 02 engineering and technology Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Polystyrene-block-poly(methyl methacrylate) Thermal conductivity chemistry Chemical engineering Mechanics of Materials 0103 physical sciences Self assembling Copolymer General Materials Science Self-assembly Thin film 010306 general physics 0210 nano-technology |
| Zdroj: | Journal of Heat Transfer. 138 |
| ISSN: | 1528-8943 0022-1481 |
| DOI: | 10.1115/1.4031701 |
| Popis: | The thermal conductivities of both disordered and self-assembled symmetric polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) copolymer films were measured using time-domain thermoreflectance (TDTR). The variation in out-of-plane thermal conductivity with changing block copolymer thickness is similar to that of PMMA polymer brushes and thick spun-cast films. The results suggest that the interfaces between the PS and PMMA, and reorganization of the PS and PMMA chains around these interfaces, do not significantly affect the thermal transport in these PS-b-PMMA films. However, for thin PS-b-PMMA films, the thermal boundary resistances at the sample interfaces limit the thermal transport. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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