Polyaniline-Doped Spherical Polyelectrolyte Brush Nanocomposites with Enhanced Electrical Conductivity, Thermal Stability, and Solubility Property

Na Su

doi:10.3390/polym7091473

Abstract

The synthesis procedure and dopant are crucial to the electrical conductivity, thermal stability, and solubility properties of polyaniline (PANI). In this paper, high-performance PANI was synthesized by means of chemical oxidative polymerization using anionic spherical polyelectrolyte brushes (ASPB) as dopant. The bonding structure, crystallographic structure, morphology, and thermal stability of the conductive nanocomposite were analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermo-gravimetric analysis (TGA) respectively. Meanwhile, investigation on the electrical conductivity suggested that the room-temperature electrical conductivity of PANI doped with ASPB (PANI/ASPB) was 19.3 S/cm, which was higher than that of PANI (7.0 S/cm), PANI doped with poly(sodium-p-styrenesulfonate) (PSS) (PANI/PSS) (14.6 S/cm), PANI doped with SiO2 (PANI/SiO2) (18.2 S/cm), and PANI doped with canonic spherical polyelectrolyte brushes (CSPB) (PANI/CSPB) (8.0 S/cm). Meanwhile, the addition of ASPB improved the thermal stability and solubility properties of PANI. ASPB played the role of template. Conductive mechanism of PANI/ASPB nanocomposite can be explained by the theoretical models of three-dimensional variable range-hopping (3D VRH).

Highlights

In recent years, the new term “Internet of Things” (IOT) frequently appears on people’s horizons, especially those living in the era of rapid development of information [1,2]
2015, anionic spherical polyelectrolyte brushes (ASPB), PSS, canonic spherical polyelectrolyte brushes (CSPB) and SiO2, no new peaks appear, indicating that the dopant ions have no effect on the structure of PANI chains
PANI/ASPB nanocomposite has been synthesized by means of chemical oxidative polymerization

Summary

Introduction

The new term “Internet of Things” (IOT) frequently appears on people’s horizons, especially those living in the era of rapid development of information [1,2]. Etching has always been the most common method of making RFID antennas. This approach must go through two processes of dry etching and wet etching. Wet etching is difficult to reduce production costs [7]. It is not environmentally friendly because it needs to be treated with a chemical process, producing large amounts of waste liquor. While printing RFID antennas by conductive ink is only needed to go through a dry process with little waste liquor, lower scrap rates, and stable antenna performance, mass production and a significantly-reduced production cost can be achieved. How to get conductive ink with excellent properties is the focus of our research

Objectives

Results

Conclusion