Electrical Properties of Silver-Attached Amine Functionalized Carbon Black/Polyethylene Terephthalate Fibers Prepared by Melt-Spinning

Abstract

In this study, amine functionalized carbon black (ABCB) was synthesized using 4-aminobenzoic acid in a phosphoric acid (PPA)/phosphorus pentoxide (P2O5) medium, and silver-attached carbon black (Ag-ABCB) was prepared by reducing AgNO3 with NaBH4 in the presence of ABCB in ethanol. Elemental, thermogravimetric, and Fourier transform-infrared analyses showed that carbon black (CB) had a well-functionalized 4-aminobenzoic acid. In addition, X-ray photoelectron spectroscopy and X-ray diffraction were used to examine the crystal structure of Ag nanoparticles. Conductive fibers were prepared by melt-spinning using ABCB, Ag-ABCB as a conductive filler, and polyethylene terephthalate (PET) as a polymer matrix. Results confirmed that the fiber that had Ag-ABCB as a conductive filler exhibited the best electrical conductivity. The dispersibility and morphology of the conductive filler in the PET matrix were confirmed through scanning electron microscopy analysis, and Ag-ABCB was the most uniformly dispersed filler in the PET matrix, with good structure.

Properties of Conductive Polyacrylonitrile Fibers Prepared by Using Benzoxazine Modified Carbon Black

“…The residual amount of Ag-ABCB at 800 °C should be related to the Ag particles, and this amount was 13 wt %. This is a strong indication that the Ag particles were successfully attached to the surface of the ABCB and that the residual char yield at 800 °C was due to the amount of Ag particle loaded [15]. As shown in the TGA thermograms obtained under a nitrogen atmosphere (Figure 4b), CB displayed linear weight loss behavior, with a char amount of 97.8 wt % at 800 °C.…”

“…The residual amount of Ag-ABCB at 800 • C should be related to the Ag particles, and this amount was 13 wt %. This is a strong indication that the Ag particles were successfully attached to the surface of the ABCB and that the residual char yield at 800 • C was due to the amount of Ag particle loaded [15].…”

“…We adopted the synthesis method reported by Lee et al [24] and Choi et al [15]. In brief, a mixture of 4-ABAc (3.65 mmol), CB (20 g), PPA (1000.0 g), and P 2 O 5 (250.0 g) was placed in a 2 L resin flask equipped with a high-torque mechanical stirrer and a nitrogen inlet and outlet.…”

“…It is known that metal-carbon composites are advantageous for the preparation of high-conductivity composite fibers [15]. Thus, to fabricate a metal-carbon composite (Ag-ABCB), Ag was attached to the surface of the ABCB using AgNO 3 as a silver precursor and NaBH 4 as the reducing agent.…”

“…There are several manufacturing methods for CB/polymer composite fibers, such as solution spinning, melt spinning, electrospinning, and bubbfil spinning. In an earlier study, we reported the fabrication and electrical properties of fibers with functionalized CB added to the PET matrix using melt spinning [15]. However, the melt spinning method has a disadvantage in that the content of the filler in the polymer matrix is limited.…”