期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 31, 页码 13605-13609出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp903159s
关键词
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Boron nitride nanotubes (BNNTs)/polyvinyl formal (PVF) composite films containing high BNNT fractions (up to 10 wt %) are fabricated. After nanotube surface modification with epicatechin gallate molecules-catechin (the major component of a Japanese green tea)-the efficient improvement of PVF thermal conductivity is achieved (similar to 160% at only 1 wt % BNNT loading fraction). Catechin molecules, having numerous aromatic rings, effectively interact with the nanotube surfaces via pi-pi bonding in such a way that catechin species mediate between BNNTs and a polymer improving the heat transfer between the matrix and fillers. Finally, the polyvinyl alcohol (PVA) polymeric composites with drastically improved thermal conductivity (similar to 270%, even at a BNNT fraction as low as 3 wt %) are fabricated using the analogous catechin-modification route.
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