Conductive polyaniline-polychloroprene blends

Pinho, Marcelo; Gorelova, M. M.; Dezzoti, Marcia; Soares, Bluma G.; Pertsin, Alexander J.

doi:10.1002/(sici)1097-4628(19981121)70:8<1543::aid-app11>3.0.co;2-f

Cited by 21 publications

(5 citation statements)

References 14 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PAni hydrochloride powder was synthesized by the oxidative polymerization of aniline in 1M aqueous HCl with (NH4) 2 S 2 O 8 as oxidant, as described in a previous work 15 . The powder was converted to PAni-EB (emeraldine base) by treatment with 0.3 M aqueous NH 4 OH followed by drying under dynamic vacuum, until constant weight.…”

Section: Pani and Sulfonated Pani Synthesesmentioning

confidence: 99%

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

et al. 2011

View full text Add to dashboard Cite

In order to study the influence of different sulfonation routes on its thermal and structural properties sulfonated polyaniline (SPAni) was prepared. FT-IR revealed that the formation of PAni salt or ring sulfonation depends on the route. UV-visible spectra pointed out that the level of the PAni protonation was dependent on the sulfonation route. A new approach was given for TG/DTG and DSC results correlating different energy levels with the distinguished sulfonation routes. The TG/DTG degradation steps and the amount of the released material corroborated the structural differences of the polyanilines. For each DSC first regime of heating, a broad and intense peak (from -30 to 250 °C) with different level of energy was noticed. That peak could be ascribed to the multiple relaxations and breaking of the PAni intra and inter hydrogen bonds after sulfonation.

show abstract

Section: Pani and Sulfonated Pani Synthesesmentioning

confidence: 99%

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

et al. 2011

View full text Add to dashboard Cite

show abstract

“…The analyzer was operated in a fixed retardation ratio (FRR) mode. The energy scale calibration and the conditions of operation have been previously described 17. To compensate for the surface charging effects, all binding energies were referenced to the C1s neutral carbon peak at 284.6eV.…”

Section: Methodsmentioning

confidence: 99%

Conducting SBS block copolymer-polyaniline blends prepared by mechanical mixing

Leyva

Barra

Gorelova

et al. 2001

J. Appl. Polym. Sci.

Self Cite

View full text Add to dashboard Cite

Polyaniline was doped with dodecylbenzenesulfonic acid (Pani ⅐ DBSA) in an agate mortar and used as a conductive additive in melt blends with styrenebutadiene-styrene (SBS) block copolymer. These blends exhibit relatively high levels of electrical conductivity at low-weight fractions of the polyaniline complex. The melt blending process, performed in a two-roll mill or in a Haake internal mixer, increased the protonation degree of the Pani ⅐ DBSA, as indicated by X-ray photoelectron spectroscopy analysis. This result confirms the occurrence of a second doping process at high temperature. The mechanical performance decreases as the amount of Pani ⅐ DBSA in the blend increases, indicating a plasticizing effect of the DBSA. The higher temperature used in blending imparts better conductivity value but gives rise to a strong crosslinked material because of the presence of the sulfonic acid and the high extent of double bonds in the SBS compound.

show abstract

“…An effective method is by preparing composite materials containing the intrinsically conductive polymers as fillers dispersed in thermoplastic or elastomeric matrices. To introduce a conductive polymer into an insulating elastomeric matrix, one can use techniques such as thermo mechanical mixing [7,15] , solution mixing [16] and electrochemical methods [17] . Among the intrinsic-conducting polymers, PPy showed higher conductivity, stability, thermal resistivity, and is easily synthesized, and the conductive polymer can be potentially used in batteries, supercapacitors, sensors, anhydrous electrorheological fluids, microwave shielding, and corrosion control [14,[18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Characteristics, Nano-Dispersibility and Application of Conducting Polypyrrole Inserted into Nitrile Rubber by Single-Step in situ Polymerization

Chiu

Chiang

Chen

et al. 2011

Polymer-Plastics Technology and Engineering

View full text Add to dashboard Cite

In this paper, we prepared nitrile rubber (NBR) and polypyrrole (PPy) as conductive fillers of electrical conductive composites to improve their electrical resistivity and mechanical properties and application by single-step of in situ polymerization. Further, we discussed the optimization condition, nano-dispersibility, and physical characteristic such as thermal-stability, electrical resistivity, mechanical and morphology of vulcanized PPy/NBR conducting composites. The composites showed that PPy-particles uniformly dispersed in the NBR matrix. Optimum volume resistivity is 2 Â 10 7 X-square, and the tensile stress changes from 3.93 N/mm 2 to 67.35 N/mm 2 . We expect that efficiencies of NBR/PPy composites can be applied to develop conducting printing rollers.

show abstract

Conductive polyaniline-polychloroprene blends

Cited by 21 publications

References 14 publications

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

Sulfonated polyaniline: influence of sulfonation routes on its thermal and structural characteristics

Conducting SBS block copolymer-polyaniline blends prepared by mechanical mixing

Characteristics, Nano-Dispersibility and Application of Conducting Polypyrrole Inserted into Nitrile Rubber by Single-Step in situ Polymerization

Contact Info

Product

Resources

About