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- Title
Synthesis of water-soluble single-walled carbon nanotubes and its application in poly(vinyl alcohol) composites.
- Authors
Li, Chunyan; Lv, Xianfeng; Dai, Jianjian; Cui, Jian; Yan, Yehai
- Abstract
A new type of water-soluble single-walled carbon nanotubes (SWNTs) was synthesized by grafting of dodecyl quaternary ammonium bromides. Results of Fourier transform infrared and proton nuclear magnetic resonance spectroscopic analyses confirmed the successful synthesis. Water-soluble performance of functionalized SWNTs, i.e. N+-SWNTs, has been studied in terms of solubility and stability. It was found that the solubility could reach up to 110 mg.l−1 and as-prepared solution possesses a good stability over the PH range of 6.87-11.25. Based on these properties, one of the important applications of N+-SWNTs was demonstrated to prepare poly(vinyl alcohol) (PVA) composites. Owing to critical issues of uniform dispersion and enhanced interfacial PVA-nanotube interaction having been simultaneously resolved to a reasonable extent, the composite film with only 0.3 wt% N+-SWNTs showed an increase of 33% and 32% in tensile strength and Young's modulus, respectively, over neat PVA film. Moreover, a high optical quality and slightly increased glass transition temperature were also observed. Copyright © 2012 John Wiley & Sons, Ltd.
- Subjects
WATER-soluble polymers; AQUEOUS polymeric coatings; CARBON nanotubes; POLYVINYL alcohol; DISPERSION (Chemistry)
- Publication
Polymers for Advanced Technologies, 2013, Vol 24, Issue 4, p376
- ISSN
1042-7147
- Publication type
Article
- DOI
10.1002/pat.3091