Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 21, Pages 18635-18643Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am503633t
Keywords
carbon nanotubes; dielectric loss; free-radical polymerization; composites
Funding
- National Natural Science Foundation of China (NSFC) [51173009]
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We report a synthetic strategy for coating multiwalled carbon nanotubes (MWCNTs) with cross-linked octa-methacrylate-polyhedral oligomeric silsesquioxane (MA-POSS) by direct, in situ free-radical polymerization in a controlled manner. This strategy resulted in a core shell structure with an MWCNT center. The shell thickness could be varied from similar to 7 nm to 40 nm by choosing different initiators, solvents, and weight ratios of MWCNT and octa-MA-POSS. Coated MWCNT hybrids had controlled electrical performance depending on the coating layer thickness and were well-dispersed in the polymer matrix. POSS-coated MINCNTs were compounded with poly(vinylidene fluoride) to obtain a composite with high dielectric permittivity and low dielectric loss.
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