By a News Reporter-Staff News Editor at Journal of Engineering -- Current study results on Fullerenes have been published. According to news reporting originating from Parkville, Australia, by VerticalNews correspondents, research stated, "A facile method to modify the surface of multiwalled carbon nanotubes (MWCNTs) via electrostatic interactions between polyelectrolytes and oxidized MWCNTs was developed. Diblock copolymers containing poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] (PMETAC), a positively charged block, and poly(ethylene glycol) methacrylate (PEGMA), a neutral block, with tailored molecular weights and low polydispersities were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization."
Our news editors obtained a quote from the research from Commonwealth Scientific and Industrial Research Organisation (CSIRO), "Acid treated-MWCNTs were coated with the RAFT diblock copolymers to improve their dispersibility in aqueous phosphate buffered saline (PBS) solution. The short positively charged PMETAC block was designed to attach the block copolymers to the surface of MWCNTs via electrostatic interactions, whereas the PEGMA block improved dispersibility of the MWCNTs in aqueous solutions. Extensive screening of the diblock copolymers with different degrees of polymerization (DP) showed that the dispersion stability of the polymer-coated MWCNTs in PBS was greatly improved with increasing chain length of the PEGMA block."
According to the news editors, the research concluded: "In particular, the MWCNTs coated with a diblock copolymer containing PEGMA (DP=118, the longest block investigated) showed superior dispersion stability in both water and PBS solution."
For more information on this research see: Surface Modification of Multiwalled Carbon Nanotubes with Engineered Self-Assembled RAFT Diblock Coatings. Australian Journal of Chemistry, 2013;67(1):151-158. Australian Journal of Chemistry can be contacted at: Csiro Publishing, 150 Oxford St, PO Box 1139, Collingwood, Victoria 3066, Australia. (CSIRO Publishing - www.publish.csiro.au; Australian Journal of Chemistry - www.publish.csiro.au/nid/51.htm)
The news editors report that additional information may be obtained by contacting Y. Liu, CSIRO Mat Sci & Engn, Parkville, Vic 3052, Australia. Additional authors for this research include X.J. Hao, L.J. Waddington, J.S. Qiu and T.C. Hughes.
Keywords for this news article include: Parkville, Fullerenes, Engineering, Nanotechnology, Emerging Technologies, Australia and New Zealand, Multiwalled Carbon Nanotube
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