Thermal Conductivity of Self Assembling Symmetric Block Copolymer Thin Films of Polystyrene Block Poly(methyl methacrylate)Source: Journal of Heat Transfer:;2016:;volume( 138 ):;issue: 002::page 24505Author:George, Matthew C.
,
Rodriguez, Mark A.
,
Kent, Michael S.
,
Brennecka, Geoff L.
,
Hopkins, Patrick E.
DOI: 10.1115/1.4031701Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The thermal conductivities of both disordered and selfassembled symmetric polystyreneblockpoly(methyl methacrylate) (PSbPMMA) copolymer films were measured using timedomain thermoreflectance (TDTR). The variation in outofplane thermal conductivity with changing block copolymer thickness is similar to that of PMMA polymer brushes and thick spuncast 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 PSbPMMA films. However, for thin PSbPMMA films, the thermal boundary resistances at the sample interfaces limit the thermal transport.
|
Collections
Show full item record
| contributor author | George, Matthew C. | |
| contributor author | Rodriguez, Mark A. | |
| contributor author | Kent, Michael S. | |
| contributor author | Brennecka, Geoff L. | |
| contributor author | Hopkins, Patrick E. | |
| date accessioned | 2017-05-09T01:30:04Z | |
| date available | 2017-05-09T01:30:04Z | |
| date issued | 2016 | |
| identifier issn | 0022-1481 | |
| identifier other | ht_138_02_024505.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/161510 | |
| description abstract | The thermal conductivities of both disordered and selfassembled symmetric polystyreneblockpoly(methyl methacrylate) (PSbPMMA) copolymer films were measured using timedomain thermoreflectance (TDTR). The variation in outofplane thermal conductivity with changing block copolymer thickness is similar to that of PMMA polymer brushes and thick spuncast 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 PSbPMMA films. However, for thin PSbPMMA films, the thermal boundary resistances at the sample interfaces limit the thermal transport. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Thermal Conductivity of Self Assembling Symmetric Block Copolymer Thin Films of Polystyrene Block Poly(methyl methacrylate) | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 2 | |
| journal title | Journal of Heat Transfer | |
| identifier doi | 10.1115/1.4031701 | |
| journal fristpage | 24505 | |
| journal lastpage | 24505 | |
| identifier eissn | 1528-8943 | |
| tree | Journal of Heat Transfer:;2016:;volume( 138 ):;issue: 002 | |
| contenttype | Fulltext |