Synthesis, characterization, and comparative study of conducting polyaniline/lead titanate and polyaniline–dodecylbenzenesulfonic acid/lead titanate composites

Abstract

To study the effect of a surfactant on the properties of polyaniline (PANI)/metal oxide composites, PANI/ lead titanate (PbTiO 3 ) composites were synthesized with different weight percentages (10,20,30,40, and 50 wt %) of PbTiO 3 in both the absence and presence of dodecylbenzenesulfonic acid (DBSA) by the polymerization of aniline with ammonium persulfate as an initiator. The structural characteristics and stability, surface characteristics, and electric properties of PANI/PbTiO 3 and PANI-DBSA/PbTiO 3 were studied and compared. The interfacial interactions and thermal stability of these composites were characterized with X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermogravimetry techniques. The results indicate significant changes in the physicochemical properties of the composites with the incorporation of DBSA.

Morphology and Charge Transport Properties of Chemically Synthesized Polyaniline-poly(ε-caprolactone) Polymer Films

“…The diffraction pattern for PANI shows a slightly broad peak at 25 o , which is a characteristic peak for PANI. 32,41 The same peak becomes sharper as the PCL concentration increases in the PP polymer composites, as observed in PP-30, and PP-50. There is also an appearance of a secondary peak at 30 o in the composites that is absent in PANI; this peak may be due to PCL.…”

“…PP-10 shows non-uniform lump-like structures that appear all over the surface of the polymer films; this result is similar to earlier reports. 37,41 The surface image of PP-30 shows a mixture of both gel-and lump-like structures which appear combined. In PP-50, there is a complete disappearance of the lumps.…”

Microscopic Studies of Polyaniline-poly-N-isopropylacrylamide-co-acrylic acid/ Flyash Composites Containing Dodecylbenzene Sulfonic Acid

“…Polymerization of aniline under these circumstances will help to improve the nature of interaction between polyaniline-metal particles. This is well supported by the result that the incorporation of DBSA in PANI/PbTiO3 showed an intrinsic change in the crystallinity and conducting properties of polyaniline as compared to bare PANI/PbTiO3 composites 19 . Recently, we have reported on the physico-chemical characteristics of the polymer composites containing polyaniline-poly-N-isopropylacrylamide-co-acrylic acid/ alumina (PANI-PNA/Al2O3) which were synthesized by chemical polymerization of aniline in an aqueous solution containing dispersed PNA/Al2O3 in the presence of DBSA 20 .…”

Surface Morphology and Electron Transport Properties of Composite Films by Poly-N-vinylcarbazole/Polyaniline

“…PANI was synthesized by in situ polymerization in the presence of APS as initiator oxidant. The typical preparation process is as follows: [40][41][42] The aniline monomer was first dissolved in water, and the solution was sonicated for 30 min to obtain a uniform suspension. The APS solution was then slowly added, followed by cooling of the complete solution to -10 o C. The resultant mixture was allowed to react in an ice bath for 20 h. The precipitated powder was filtered and washed with distilled water and methanol until the filtrate became colorless, and then dried in a vacuum at room temperature for 24 h.…”