Microwave Hall mobility and electrical properties of electrospun polymer nanofibers

Abstract

Composite nanofibers from poly(methylmethacrylate)- (PMMA-) conducting polyaniline [PANI(HCl)] were prepared by using the electrospinning technique. The morphology and structural details of the fibers were characterized by SEM and the ac conductivity of the composite fibers found was measured to be ∼ 2.17×10−4 S/cm which is very good enhancement compared to that of pure PMMA and conductivity of PANI-PMMA thin films as well. The conductivity is found to increase with increase in the polyaniline content in the composite. Microwave Hall mobility measurements on electrospun nanofibers showed 17 cm2/V s for the lower loadings. With further increase in the polyaniline content in the composite, the mobility value decreases which is attributed to the increase in carrier-carrier scatterings.

Nitrogen-doped rice grain-shaped titanium dioxide nanostructures by electrospinning: Frequency and temperature dependent conductivity

“…0021-8979/2011/110(6)/064327/7/$30.00 V C 2011 American Institute of Physics 110, 064327-1 was reported elsewhere. 11,[14][15][16][17][18] In the present experiments, the distance and applied voltage between the needle and substrate were maintained at 15 cm and 30 kV, respectively. The as-spun polymer-TiO 2 composite fibers were collected on a rotating substrate, which is wrapped with an aluminum foil.…”

Measurement on the structural, morphological, electrical and optical properties of PANI-CSA nanofilms

“…Camphorsulfonic acid (CSA) doped PANI (PANI-CSA) thin film find application in bifacial dye sensitized solar cells as counter electrode, which impart superior photo-voltaic performances for the device by presenting power conversion efficiency of 5.5% [20]. As it posses metal-like behavior, it was used as a filler in poly(methylmethacrylate) composites to produce highly conductive electrospun nanofibers [21]. Due to high conductivity and light weight, PANI-CSA was found to be the most promising conducting filler material for the production of lightning strike protection composite coatings [22].…”

Bi2O3and BiOCl electrospun nanosheets and morphology-dependent photocatalytic properties

“…11,17,18 1D nanostructures are employed in various applications such as solving environmental (photocatalysis and water treatment) 19,20 and energy (electronics and photonics) issues. [21][22][23] In this context, photocatalysis is a ''green" technique, which offers promising ways to completely remove toxic pollutants from the environment through its efficiency and broad suitability. 24 1D nanostructures produced by electrospinning is straightforward and simple.…”