Modified polyaniline and its effects on the microstructure and antistatic properties of PP/PANI‐APP/CPP composites

Abstract

Polypropylene (PP) composites that contain poly(aniline) (PANI) and ammonium polyphosphate crystalline form II (APP‐II) have both antistatic and flame‐retardant properties. In the present study, double anti‐functional PANI was prepared via in situ polymerization in the presence of APP‐II. Analysis of the Fourier transform infrared spectra demonstrated that PANI was synthesized successfully with APP‐II and that modified PANI (PANI‐APP) was obtained. Next, PP/PANI‐APP/chlorinated poly(propylene) (CPP) and PP/PANI/CPP composites were prepared. The results showed that the volume resistivity of the PP/PANI‐APP/CPP composite was at least 100 times less than that of the PP/PANI/CPP composite. The microstructures of the corresponding composites were investigated carefully by scanning electron microscopy and wide angle X‐ray diffraction. The areas of the conductive regions and the percentage crystallinity of PP in the PP/PANI‐APP/CPP composite were distinctly higher than those in the PP/PANI/CPP composite, i.e., by about 10% and 7%, respectively. In addition, experimental analyses of the limiting oxygen index and thermogravimetry showed that the PP/PANI‐APP/CPP composite had advantages compared with PP in terms of its flame‐retardant properties thermal stability. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40732.

Facile route for synthesis of flame retardant, antibacterial and conductive fabrics

“…In C-GRP-PANI-NF composites, the rate of burning was recorded as 77.24 mm/min which is reduced compared to C blank. This was due to the introduction of PANI-NF and graphene structures into the textile, which improved the fire retardancy [51]. After burning, the coated material retains the original fibrillar morphology of cellulose, the resulting structure prevents the formation of gaseous carbon oxides by restricting the access of oxygen to cellulose; and also, the porous structure of graphene offers significant restriction on the emission of toxic gases upon combustion .…”

Fabrication of multifunctional polymethyl methacrylate composites based on phosphorus‐containing polyaniline with excellent flame retardancy and electrical conductivity

“…Furthermore, the electrical conductivity of such polymer composites can be controlled by adjusting the additive content and the doping reaction of PANI. Nevertheless, PANI is a poor flame retardant for the polymer matrix 33,34 . Nitrogen, in the form of CN bonds, inefficiently imparts flame retardancy to polymer materials because CN bonds are sufficiently strong, which will not break during the thermal degradation process, resulting in nitrogen‐containing compounds that are unable to volatilize into the gas phase to attenuate ignitability 35‐37 .…”

Recent progress on nanostructured conducting polymers and composites: synthesis, application and future aspects

“…The composites exhibit high conductivities up to 10 −3 S cm −1 for 40 wt.% of conducting nanocomposites, which can also be used for electromagnetic shielding applications. Xu et al [402] introduced PANI as a conductive agent into polypropylene (PP) matrix, the composites showed significant improvement in volume resistivity of the composite. Shi et al [403] studied the PANI/cellulose composite fibers with good antistatic properties.…”