Electrical and structural analysis of conductive polyaniline/polyacrylonitrile composites

Pan, Wei; Yang, Sheng Lin; Li, Guang; Jiang, Jian

doi:10.1016/j.eurpolymj.2005.04.003

Cited by 86 publications

(51 citation statements)

References 21 publications

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“…The WAXD curves were obtained in the first method. The peak at about 3 is attributed to the lamellar-like structure of PANI-DBSA, 18,23,24 and the lamellar-like structure is also observed in TEM micrograph. 18 The peak at about 3 is distinctly influenced by the CPP content.…”

Section: Wide Angle X-ray Diffraction Studymentioning

confidence: 71%

Investigation on the microstructure and the electric property of poly(propylene)/chlorinated poly(propylene)/poly(aniline) composites

Yang

Chen

2008

J of Applied Polymer Sci

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The article presents results of studies on composites made from poly(propylene) (PP) modified with poly(aniline) (PANI) doped with dodecylbenzene sulfonic acid (DBSA) and chlorinated poly(propylene) (CPP). The volume resistivity of PP/CPP/PANI composites was detected, and the results show that the volume resistivity decreases with increasing CPP content, and there exists a minimum volume resistivity. Effects of CPP on the microstructure and crystalline structure of the PP/CPP/PANI composites and the relationship between the effects and the electric property were carefully analyzed by scanning electron microscope (SEM) and wide angle X-ray diffraction (WAXD). The method that the specimens of SEM are polished is appropriate to investigate the morphology of conducting polymer composites. The obtained results illuminate that the area of conducting parts and insulating parts obtained from the digital analysis of the SEM image is obviously influenced by the CPP content, the parameters of the lamellar-like structure are immediately related to CPP content and denote the dispersion of PANI-DBSA, and the percent crystallinity and mean crystal size of PP are directly correlated with the CPP content. The increasing area of conducting parts, the increasement of layer distance, the decreasement of size and layer number of the lamellar-like structure of PANI-DBSA, and the increasement of the percent crystallinity and mean crystal size of PP are beneficial to the improvement of the conductive property of PP/CPP/PANI composites.

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Section: Wide Angle X-ray Diffraction Studymentioning

confidence: 71%

Investigation on the microstructure and the electric property of poly(propylene)/chlorinated poly(propylene)/poly(aniline) composites

Yang

Chen

2008

J of Applied Polymer Sci

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“…The degradation of the PANI/SD/TiO 2 occurred at 20 °C lower than the degradation temperature of pure PANI suggesting that the composite influenced the structure and thermal stability of PANI [47]. The weight losses in PANI/SD/TiO 2 between 30-150 °C were thought to be due to the presence of unremoved water molecules as moisture in polymers and PANI composites and acid dopants [48]. The onset of the decomposition of PANI was at 150 °C while that for PANI/SD/TiO 2 occurred at 260 °C.…”

Section: Morphologymentioning

confidence: 99%

A Novel Polyaniline Titanium Oxide Sawdust Composite Adsorbent for Polychlorinated Biphenyls

Okumu¹

2013

SJC

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Polyaniline /sawdust /titanium oxide (PANI/SD/TiO 2 ) composite was chemically synthesised by insitu polymerization of aniline monomer in acidic medium containing sawdust and titanium oxide. The structure and morphological variations of PANI/SD/TiO 2 composite were interrogated by means of spectroscopy (FTIR, UV-visible, thermal gravimetric (TG) analyzer, X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). Noticeable spectral and morphological changes were observed compared to pristine PANI thus, strongly suggesting chemical interaction between compounds present in the composite. Batch experiments were adopted in examining the adsorption kinetics and isotherm of selected polychlorinated biphenyl (PCB) congeners (PCB: 28, 52 and 101). Results indicate that PANI/SD/TiO 2 can be used as a novel, effective and low-cost adsorbent material for lower Chlorinated PCB remediation (PCB 28). Adsorption equilibrium studies followed Freundlich for PCB 52 and Langmuir models for PCB 28 and 101. While the adsorption kinetics were best described by pseudo-second-order (PCB 28 and PCB 52) and intraparticle diffusion models (PCB 101).

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“…PANI pristine polymerized in the emulsion water/chloroform had a conductivity of 1.2 S/m which is close to the conductivity reached by composite IV, 7.0!10 -1 S/m. Fluctuations in conductivity of PANI and its composites prepared under controlled conditions may be attributed to a large number of factors, including the presence of humidity [16], morphology and the dispersion of the filler in the composite [37]. Thus, all the samples presented comparable conductivities and are suitable candidates for applications as semiconducting biomaterials.…”

Section: Yields Pani Content and Electricalmentioning

confidence: 99%

Biodegradable conductive composites of poly(3-hydroxybutyrate) and polyaniline nanofibers: Preparation, characterization and radiolytic effects

Araújo¹,

Ferreira²,

Araújo³

2011

Express Polym. Lett.

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Poly(3-hydroxybutyrate) is a biodegradable polyester produced by microorganisms under nutrient limitation conditions. We obtained a biodegradable poly(3-hydroxybutyrate) composite having 8 to 55% of chemically in situ polymerized hydrochloric acid-doped polyaniline nanofibers (70-100 nm in diameter). Fourier transform infrared spectroscopy and X-rays diffractometry data did not show evidence of significant interaction between the two components of the nanocomposite, and polyaniline semiconductivity was preserved in all studied compositions. Gamma-irradiation at 25 kGy absorbed dose on the semiconductive composite presenting 28% of doped polyaniline increased its conductivity from 4.6*10-2 to 1.1 S/m, while slightly decreasing its biodegradability. PANI-HCl biodegradation is negligible when compared to PHB biodegradability in an 80 day timeframe. Thus, this unprecedented all-polymer nanocomposite presents, at the same time, semiconductivity and biodegradability and was proven to maintain these properties after gamma irradiation. This new material has many potential applications in biological science, engineering, and medicine

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Electrical and structural analysis of conductive polyaniline/polyacrylonitrile composites

Cited by 86 publications

References 21 publications

Investigation on the microstructure and the electric property of poly(propylene)/chlorinated poly(propylene)/poly(aniline) composites

Investigation on the microstructure and the electric property of poly(propylene)/chlorinated poly(propylene)/poly(aniline) composites

A Novel Polyaniline Titanium Oxide Sawdust Composite Adsorbent for Polychlorinated Biphenyls

Biodegradable conductive composites of poly(3-hydroxybutyrate) and polyaniline nanofibers: Preparation, characterization and radiolytic effects

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