Electron spin resonance on carbon nanotubes-polymer composites

被引：28

作者：

Chipara, M ^{[1
]}

Zaleski, JM

Hui, D

Du, CS

Pan, N

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47401 USA

[2] Univ New Orleans, Dept Engn Mech, New Orleans, LA 70148 USA

[3] Univ Calif Davis, Nanomat Environm Agr & Technol, Davis, CA 95616 USA

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2005年 / 43卷 / 23期

关键词：

block copolymers; carbon nanotube; composites; electron spin resonance (ESR); nanocomposites; polymer; styrene-isoprene-styrene;

D O I：

10.1002/polb.20647

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Electron spin resonance investigations on styrene-polyisoprene-polystyrene block copolymer loaded with various amounts of multimalled 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. (c) 2005 Wiley Periodicals, Inc.

引用

页码：3406 / 3412

页数：7

共 27 条

[1] Mechanical and electrical properties of a MWNT/epoxy composite [J].