Homogeneous modification of carbon nanotubes with cellulose acetate

An efficient strategy that comprised shorten, chain extension, active groups introducing and homogeneous reaction tactics, was adopted to modify multiwalled carbon nanotubes (MWNTs) with cellulose acetate (CA). Specially, by utilizing 2,4,6-trichloro-1,3,5-triazine, a reactive intermediate of the MWNTs (MWNT-triazine) was obtained. Suitable solubility of the MWNT-triazine helps make the homogeneous modification become reality. Detailed characterizations further verified that reaction between chloride atoms in the MWNT-triazine and hydroxyl groups in the CA had contributed to the formation of MWNT-CA conjugates. The novel MWNT-CA consists of carbon (76.3%), oxygen (18.4%) and nitrogen (5.3%). With a nanotube-attached CA content of 42.8 wt%, the MWNT-CA is readily soluble in DMSO, NMP, DMF and DMAc. Confirmation of the CA-based modification route might lead to studies aiming for specific sorption and isolation. (C) 2009 Gang Ke. Published by Elsevier B.V on behalf of Chinese Chemical Society. All rights reserved.