期刊
RSC ADVANCES
卷 3, 期 44, 页码 21817-21823出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra44277b
关键词
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资金
- National Science Foundation of China [21104039, 21134004, 21201108]
- National 973 Project, China Postdoctoral Science Foundation [2011CB935700, 2012M520388]
A novel strategy for surface modification of multi-walled carbon nanotubes (MWCNTs) using reversible addition fragmentation transfer (RAFT) derived pH- and thermo-responsive polymers was developed via a combination of mussel inspired chemistry and a Michael addition reaction. In this procedure, pristine MWCNTs were first coated with polydopamine through self polymerization of dopamine under alkine solution, and then RAFT derived stimuli-responsive polymers were further grafted onto PDA modified MWCNTs via a Michael addition reaction. The successful modification of MWCNTs was confirmed by a series of characterization techniques including transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, thermal gravimetric analysis and X-ray photoelectron spectrometry. These polymer modified CNTs showed enhanced dispersibility in various solutions and pH-/temperature-responsive properties. Due to the strong adhesion of polydopamine to various materials surface, the method described in this work could also be extended to the surface modification of other nanomaterials.
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