Title: Preparation and characterisation of field-responsive nanofibres by coaxial electrospinning

Authors: Dayeong Jeong; Deok Jun Whang; Sungmin Kim; Tae Jin Kang

Addresses: Hyosung Corporation, 74, Simin-daero, Dongan-gu, Anyang-si 431-080, Gyeonggi-do, South Korea ' Department of Materials Science and Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul, 151-742, South Korea ' Department of Textiles, Merchandising, and Fashion Design, Seoul National University, Daehak-dong, Gwanak-gu, Seoul, 151-742, South Korea ' Department of Materials Science and Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-742, South Korea

Abstract: Field-responsive core-sheath nanofibres were prepared via coaxial electrospinning with MWNTs/Fe3O4 nanoparticles in polyurethane (PU) solution. To improve the mechanical properties and dispersibility of Fe3O4 nanoparticles in PU solution, co-precipitation method was utilised to synthesise MWNT&Fe3O4 nanocomposites. The results showed that Fe3O4 nanoparticles were chemically attached on the surface of MWNTs and a homogeneous distribution of MWNT/Fe3O4 nanocomposites along the PU nanofibres. The composite nanofibres showed superparamagnetic behaviour of MWNT/Fe3O4 nanoparticles. The mechanical properties of field-responsive core-sheath nanofibres showed improved tensile properties under an external magnetic field. It indicates that the MWNTs/Fe3O4 nanocomposites-incorporated core-sheath structure is effective for enhancing the mechanical properties of field-responsive nanofibre webs.

Keywords: field-responsive materials; composite nanofibres; coaxial electrospinning; carbon nanotubes; CNTs; polyurethane; nanotechnology; nanocomposites; nanoparticles; core-sheath nanofibres; mechanical properties.

DOI: 10.1504/IJNT.2016.077076

International Journal of Nanotechnology, 2016 Vol.13 No.4/5/6, pp.253 - 264

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 19 Jun 2016 *

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