Highly porous multiwalled carbon nanotube buckypaper using electrospun polyacrylonitrile nanofiber as a sacrificial material

Author(s)

Rojas, J. A. ^[1] ; Ardila-Rodriguez, L. A. ^[2] ; Diniz, M. F. ^[3] ; Goncalves, M. ^[1] ; Ribeiro, B. ^[1] ; Rezende, M. C. ^[1]

Affiliation

^[1] Fed Univ Sao Paulo UNIFESP, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP - Brazil

^[2] Technol Inst Aeronaut ITA, Div Fundamental Sci, BR-12228 Sao Jose Dos Campos, SP - Brazil

^[3] IAE, DCTA, BR-12228904 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: HELIYON; v. 5, n. 3 MAR 2019.
• Web of Science Citations: 1

Abstract

Polyacrylonitrile (PAN) was solubilized in N, N-dimethyl formamide (DMF) and the electrospinning process has been employed to obtain PAN nanofibers (PF). Multiwalled carbon nanotubes (MWCNT) were dispersed with the aid of Triton X-100 surfactant and subsequently centrifugated. Buckypapers (BP/PF) were prepared by vacuum filtration procedure of MWCNT suspension supernatant stacking four PF layers over a nylon membrane. The PF removal was carried out by immersing the BP/PF system in DMF and removal periods of 10 and 30 min were evaluated. Scanning electron microscopy (SEM) has not shown any PAN residue in the MWCNT network resulting in highly porous BP. However, by Fourier transform infrared spectroscopy (FT-IR) a PAN band was found around of 2243 cm(-1) corresponding to nitrile group (C N). Besides, PAN leftover was evidenced by thermogravimetric analysis (TGA), high-resolution transmission electron microscopy (HR-TEM), electrical characterization through four-point probe, nitrogen adsorption at 77 K, and X-ray diffraction (XRD). (AU)

• FAPESP's process: 17/04740-0 - PREPARATION AND CHARACTERIZATION OF MULTIFUNCTIONAL NANOSTRUCTURED COMPOSITES BASED ON GLASS FIBER/EPOXI RESIN/CARBON NANOTUBE BUCKYPAPER LAMINATE
• Grantee: Bruno Ribeiro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral