Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 21, Pages 13567-13572Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b01531
Keywords
boron nitride; microplasma; thermal transport; exfoliation; phonon; polymer nanocomposites
Funding
- National Natural Science Foundation of China [51203135, 51173174]
- Invest NI PoC award [325]
- COST Action [TD1208]
- Engineering AMP
- Physical Sciences Research Council (EPSRC) [EP/M024938/1, EP/K022237/1]
- Engineering and Physical Sciences Research Council [EP/M024938/1, EP/K022237/1] Funding Source: researchfish
- EPSRC [EP/M024938/1, EP/K022237/1] Funding Source: UKRI
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This Research Article reports on the enhancement of the thermal transport properties of nanocomposite materials containing hexagonal boron nitride in poly(vinyl alcohol) through room-temperature atmospheric pressure direct-current microplasma processing. Results show that the microplasma treatment leads to exfoliation of the hexagonal boron nitride in isopropyl alcohol, reducing the number of stacks from >30 to a few or single layers. The thermal diffusivity of the resulting nanocomposites reaches 8.5 mm(2) s(-1) times greater than blank poly(vinyl alcohol) and twice that of nanocomposites containing nonplasma treated boron nitride nanosheets. From TEM analysis, we observe much less aggregation Of the nanosheets after plasma processing along with indications of an amorphous carbon interfacial layer, which may contribute to stable dispersion of boron nitride nanosheets in the resulting plasma treated colloids.
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