Electron spin resonance on carbon nanotubes–polymer composites | Zendy

Chipara Mircea | Zendy; Zaleski Jeffrey M. | Zendy; Hui David | Zendy; Du Chunsheng | Zendy; Pan Ning | Zendy

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Electron spin resonance on carbon nanotubes–polymer composites

Author(s) -

Chipara Mircea,

Zaleski Jeffrey M.,

Hui David,

Du Chunsheng,

Pan Ning

Publication year - 2005

Publication title -

journal of polymer science part b: polymer physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.65

H-Index - 145

eISSN - 1099-0488

pISSN - 0887-6266

DOI - 10.1002/polb.20647

Subject(s) - carbon nanotube , electron paramagnetic resonance , resonance (particle physics) , materials science , delocalized electron , polystyrene , copolymer , composite material , polymer , polymer chemistry , chemistry , nuclear magnetic resonance , atomic physics , organic chemistry , physics

Electron spin resonance investigations on styrene–polyisoprene–polystyrene block copolymer loaded with various amounts of multiwalled carbon nanotubes are reported. The temperature dependence of resonance line parameters in the range 290–425 K was analyzed. It was proved that the main resonance line represents a bottleneck of localized and delocalized electrons residing on carbon nanotubes. The temperature dependence of the g ‐factor and double integral of resonance spectra confirmed this interpretation. The temperature dependence of the resonance linewidth of composites containing various concentrations of nanotubes was explained by the thermally activated narrowing of the resonance spectra. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 3406–3412, 2005

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