Choi, Jae Ryung Yu, Seunggun Jung, Haejong Hwang, Sun Kak Kim, Richard Hahnkee Song, Giyoung Cho, Sung Hwan Bae, Insung Hong, Soon Man Koo, Chong Min Park, Cheolmin 2024-01-20T07:34:56Z 2024-01-20T07:34:56Z 2021-09-05 2015-02 2040-3364 https://pubs.kist.re.kr/handle/201004/125800 The development of polymer-filled composites with an extremely high thermal conductivity (TC) that is competitive with conventional metals is in great demand due to their cost-effective process, light weight, and easy shape-forming capability. A novel polymer composite with a large thermal conductivity of 153 W m(-1) K-1 was prepared based on self-assembled block copolymer micelles containing two different fillers of micron-sized silver particles and multi-walled carbon nanotubes. Simple mechanical mixing of the components followed by conventional thermal compression at a low processing temperature of 160 degrees C produced a novel composite with both structural and thermal stability that is durable for high temperature operation up to 150 degrees C as well as multiple heating and cooling cycles of Delta T = 100 degrees C. The high performance in thermal conduction of our composite was mainly attributed to the facile deformation of Ag particles during the mixing in a viscous thermoplastic medium, combined with networked carbon nanotubes uniformly dispersed in the nanoscale structural matrix of block copolymer micelles responsible for its high temperature mechanical stability. Furthermore, micro-imprinting on the composite allowed for topographically periodic surface micropatterns, which offers broader suitability for numerous micro-opto-electronic systems. English ROYAL SOC CHEMISTRY HEXAGONAL BORON-NITRIDE GRAPHITE NANOPLATELET INTERFACE NANOCOMPOSITES GRAPHENE COMPOSITES POLYIMIDE TRANSPORT BEHAVIOR FILMS Self-assembled block copolymer micelles with silver-carbon nanotube hybrid fillers for high performance thermal conduction Article 10.1039/c4nr06390b 1 NANOSCALE, v.7, no.5, pp.1888 - 1895 NANOSCALE 7 5 1888 1895 scie scopus 000348348300043 2-s2.0-84921727847 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article HEXAGONAL BORON-NITRIDE GRAPHITE NANOPLATELET INTERFACE NANOCOMPOSITES GRAPHENE COMPOSITES POLYIMIDE TRANSPORT BEHAVIOR FILMS thermal conductive composite Ag CNT block copolymer