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ACS Appl Mater Interfaces. 2018 Jan 31;10(4):3155-3159. doi: 10.1021/acsami.7b16921. Epub 2018 Jan 16.

Interfacial Engineering for the Synergistic Enhancement of Thermal Conductivity of Discotic Liquid Crystal Composites.

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BK21 Plus Haptic Polymer Composite Research Team & Department of Polymer Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea.
Smart Materials R&D Center, Korea Automotive Technology Institute , Cheonan 330-912, Korea.
Division of Advanced Materials Engineering, Chonbuk National University , Jeonju 54896, Korea.


To develop an advanced heat transfer composite, a deeper understanding of the interfacial correlation between matrix and filler is of paramount importance. To verify the effect of interfacial correlations on the thermal conductivity, the conductive fillers such as expanded graphite (EG) and boron nitride (BN) are introduced in the discotic liquid crystal (DLC)-based polymeric matrix. The DLC matrix exhibits better interfacial affinity with EG compared to BN because of the strong π-π interactions between EG and DLC. Thanks to its excellent interfacial affinity, the EG-DLC composites show a synergistic increment in thermal conducting performance.


discotic liquid crystal; interfacial phonon scattering; organic heat transfer material; reactive mesogen; thermal conducting material


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