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Selective Localization and Migration of Multiwalled Carbon Nanotubes in Blends of Polycarbonate and Poly(styrene‐acrylonitrile)
Author(s) -
Göldel Andreas,
Kasaliwal Gaurav,
Pötschke Petra
Publication year - 2009
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800549
Subject(s) - polycarbonate , materials science , carbon nanotube , acrylonitrile , mixing (physics) , compounding , phase (matter) , nanotube , composite material , styrene , polymer blend , acrylonitrile butadiene styrene , polymer chemistry , chemical engineering , polymer , copolymer , organic chemistry , chemistry , physics , quantum mechanics , engineering
Multiwalled carbon nanotubes (MWNTs) have been introduced into blends of polycarbonate (PC) and poly(styrene‐acrylonitrile) (SAN) by melt mixing in a microcompounder. Co‐continuous blends are prepared by either pre‐compounding low amounts of nanotubes into PC or SAN or by mixing all three components together. Interestingly, in all blends, regardless of the way of introducing the nanotubes, the MWNTs were exclusively located within the PC phase, which resulted in much lower electrical resistivities as compared to PC or SAN composites with the same MWNT content. The migration of MWNTs from the SAN phase into the PC phase during common mixing is explained by interfacial effects.