Facile approach to fabricate waterborne polyaniline nanocomposites with environmental benignity and high physical properties

Abstract

Waterborne polyaniline (PANI) dispersion has got extensive attention due to its environmental friendliness and good processability, whereas the storage stability and mechanical property have been the challenge for the waterborne PANI composites. Here we prepare for waterborne PANI dispersion through the chemical graft polymerisation of PANI into epichlorohydrin modified poly (vinyl alcohol) (EPVA). In comparison with waterborne PANI dispersion prepared through physical blend and in situ polymerisation, the storage stability of PANI-g-EPVA dispersion is greatly improved and the dispersion keeps stable for one year. In addition, the as-prepared PANI-g-EPVA film displays more uniform and smooth morphology, as well as enhanced phase compatibility. PANI is homogeneously distributed in the EPVA matrix on the nanoscale. PANI-g-EPVA displays different morphology at different aniline content. The electrical conductivity corresponds to 7.3 S/cm when only 30% PANI is incorporated into the composites, and then increases up to 20.83 S/cm with further increase in the aniline content. Simultaneously, the tensile strength increases from 35 MPa to 64 MPa. The as-prepared PANI-g-EPVA dispersion can be directly used as the conductive ink or coatings for cellulose fibre paper to prepare flexible conductive paper with high conductivity and mechanical property, which is also suitable for large scalable production.

The Effect of pH on the Preparation of Electrically Conductive and Physically Stable PANI/Sago Blend Film via in situ Polymerization

“…In most studies involving preparation of PANI blends or composites, PANI was used as filler material, which reduces the surface conductivity of the blend at micro level. Therefore, in order to prepare PANI blends with uniform and enhanced conductivity at micro level, researchers have opted for in situ polymerization technique (Lu et al, 2007;Arenas et al, 2014;Pour-Ali et al, 2014;Wang et al, 2017). In this regard we tried preparation of PANI/Sago blends using in situ polymerization technique.…”

Polyaniline nanoparticles for the selective recognition of aldrin: Synthesis, characterization, and adsorption properties

“…The two peaks often combined into a flat or distorted peak. The absorption band at 800 nm is taken as evidence of the presence of localized polarons/bipolarons [28]. Similar absorption peaks are observed in the imprinted polyaniline nanoparticles.…”

“…S7. The spectra for the nonimprinted polyaniline shows absorption peak at 350 nm and 430 nm are ascribed to the   * transitions in the benzoid rings and exciton absorption in the quinoid rings [26][27][28][29][30]. The two peaks often combined into a flat or distorted peak.…”

“…However, the peaks at 350 nm and 430 nm are seen to have shifted to 360 nm and 460 nm respectively exhibiting a redshift. It is also observed that the absorption peak characterizing the localized polarons/bipolarons essentially disappears at 800 nm, instead significant broadening occurs [24,26,28,30].…”

A facile approach to fabricate waterborne, nanosized polyaniline‐graft‐(sulfonated polyurethane) as environmental antistatic coating

“…It is reported that building chemical bond between two materials is beneficial to improve their compatibility, processability and the related performance . In our previous study, it is also demonstrated that the introduction of A‐ g ‐B may be able to enhance the compatibility between A and B.…”