Feb 1, 2021 · We report on the fabrication of Polyacrylonitrile (PAN) based electrospun carbon nanofiber (ECNF) reinforced with multi-walled carbon nanotubes (MWCNTs) and characterization of the graphitic structure as well as electrical transport properties for four different ECNF systems.

Silver-impregnated polyacrylonitrile (PAN) nanofibre was prepared through electrospinning process. Infra-red spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy...

In the case of the PAN nanofibrous membranes, the C 1s spectrum displayed two peaks at 284.8 eV and 287.7 eV, which can be attributed to the presence of C− C and C --O bonds, respectively [45]....

Jun 15, 2017 · Polyacrylonitrile (PAN) nanofibers were prepared via electrospinning, and the PAN nanofibers were then subjected to alkaline hydrolysis with different treatment times. The alkaline hydrolysis behavior of the PAN nanofibers was investigated with ATR-IR and XPS analyses.

The C1s peak of raw PAN fibers was composed of four components assigned to carbon atoms of the main polymer chain (B.E.=284.6 eV), the carbon bonded to the nitrile group (B.E.=285.2 ...

Aug 15, 2022 · Curve fitting of C1s spectrum is the most widely analysed in XPS studies on polymer-based materials. The purpose of this work is to utilise XPS to observe the formation of conjugated ladder structure of PAN in order to obtain the optimal conditions of thermal stabilisation process.

After PAN fiber was heated at 250oC, C1s XPS spectrum show 3 peaks centered at 281.36 eV, 286.00 eV and 284.07. All peaks are referred to C-H, ester carbon (COO-R) and C-C or graphitic carbon.

Aug 19, 2022 · XPS high-resolution C1s spectra of (c) stabilized PAN nanofibers and (d) carbonized PAN nanofibers before (top) and after (bottom) plasma-jet exposure of 120 s. Molecular structures between the spectra represent the respective functional groups color coded in the deconvolutedd spectra in (a–d).

Deconvolution of C1s (Figure 2B) shows a peak at 285.6 eV corresponding to the C–N bond which is not present in hydrolyzed PAN. However, hydrolyzed samples display two new peaks at 286.5eV and 288.5 eV ascribed to the formed C–O and C=O bonds respectively [ 22 , 25 ].

A hydrophilic polyvinyl pyrrolidone/polyacrylonitrile (PVP/PAN) composite nanofiber membrane was successfully synthesized by Meng et al. (2021) using an electrospinning technique and a blending...