Citation: Gang Ke, Wen Chao Guan, Chang Yu Tang, Zhen Hu, Wen Jie Guan, Dan Lin Zeng, Feng Deng. Covalent modification of multiwalled carbon nanotubes with a low molecular weight chitosan[J]. Chinese Chemical Letters, ;2007, 18(3): 361-364. doi: 10.1016/j.cclet.2007.01.010 shu

Covalent modification of multiwalled carbon nanotubes with a low molecular weight chitosan

a Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, China;
b Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China;
c Department of Physics, Wuhan University, Wuhan 430072, China;
d State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China

Received Date: 19 September 2006

Fund Project: This work is supported by the NNSF of China (No. 50374039).

Covalent modification of shortened multiwalled carbon nanotubes (MWNTs) with a natural low molecular weight chitosan (LMCS) was accomplished by the nucleophilic substitution reaction. The LMCS modified MWNTs (MWNT-LMCS) were characterized by FTIR, solid-state ¹³C NMR, and XPS spectroscopies, thermogravimetric analysis, and transmission electron microscopy. The results revealed that amino and primary hydroxyl groups of the LMCS participated mainly in the formation of the MWNT-LMCS conjugates. The MWNT-LMCS consists of 58 wt.% LMCS, and about four molecular chains of the LMCS were attached to 1000 carbon atoms of the nanotube sidewalls. As a novel derivative of the MWNTs, the MWNT-LMCS not only solved in DMF, DMAc and DMSO, but also in aqueous acetic acid solution.
- Carbon nanotubes,
- Chitosan,
- Renewable resources,
- Modification
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