Premium
Modification and Grafting of Multi‐Walled Carbon Nanotubes with Bisphenol‐A‐polycarbonate
Author(s) -
Mormann Werner,
Lu Yong,
Zou Xuena,
Berger Ralf
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800263
Subject(s) - polycarbonate , grafting , carbon nanotube , materials science , aminolysis , polymer chemistry , scanning electron microscope , bisphenol a , transmission electron microscopy , chemical engineering , polymer , chemistry , composite material , organic chemistry , nanotechnology , catalysis , epoxy , engineering
Multi‐walled carbon nanotubes (MWNT) were oxidized with nitric acid and resulting carboxy groups were transformed to amino groups with a diamine under microwave irradiation. Grafting of bisphenol‐A‐polycarbonate onto carboxy‐ and amino‐functional MWNT through transesterification or aminolysis resulted in weight increase up to 300%. The morphology of functionalized and grafted MWNTs was investigated with scanning force microscopy (SFM) and transmission electron microscopy (TEM). Depending on the type of functionalisation and the extent of grafting different morphologies were observed. Aminofunctional MWNT ‐g‐ PCs showed more “ball‐like” or irregular protrusions of grafted PC. Carboxyfunctional MWNT ‐g‐ PCs were more smoothly covered with PC.