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Modification and Grafting of Multi-Walled Carbon Nanotubes with Bisphenol-A-polycarbonate

✍ Scribed by Werner Mormann; Yong Lu; Xuena Zou; Ralf Berger

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
696 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

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.

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