A strategy to achieve enhanced electromagnetic interference shielding at ultra-low concentration of multiwall carbon nanotubes in P alpha MSAN/PMMA blends in the presence of a random copolymer PS-r-PMMA
Data(s) |
2016
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Resumo |
A unique strategy was adopted to achieve an ultra-low electrical percolation threshold of multiwall carbon nanotubes (MWNTs) (0.25 wt%) in a classical partially miscible blend of poly-alpha-methylstyrene-co-acrylonitrile and poly(methyl methacrylate) (P alpha MSAN/PMMA), with a lower critical solution temperature. The polymer blend nanocomposite was prepared by standard melt-mixing followed by annealing above the phase separation temperature. In a two-step mixing protocol, MWNTs were initially melt-mixed with a random PS-r-PMMA copolymer and subsequently diluted with 85/15 P alpha MSAN/PMMA blends in the next mixing step. Mediated by the PS-r-PMMA, the MWNTs were mostly localized at the interface and bridged the PMMA droplets. This strategy led to enhanced electromagnetic interference (EMI) shielding effectiveness at 0.25 wt% MWNTs through multiple scattering from MWNT-covered droplets, as compared to the blends without the copolymer, which were transparent to electromagnetic radiation. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/53657/1/RSC_Adv_6-32_26959_2016.pdf Bose, Suryasarathi and Sharma, Maya and Bharati, Avanish and Moldenaers, Paula and Cardinaels, Ruth (2016) A strategy to achieve enhanced electromagnetic interference shielding at ultra-low concentration of multiwall carbon nanotubes in P alpha MSAN/PMMA blends in the presence of a random copolymer PS-r-PMMA. In: RSC ADVANCES, 6 (32). pp. 26959-26966. |
Publicador |
ROYAL SOC CHEMISTRY |
Relação |
http://dx.doi.org/10.1039/c5ra27976c http://eprints.iisc.ernet.in/53657/ |
Palavras-Chave | #Materials Engineering (formerly Metallurgy) |
Tipo |
Journal Article PeerReviewed |