Development of polyurethane/polyaniline membranes for zinc recovery through electrodialysis

Amado, Franco Dani Rico; Rodrigues, Luiz Frederico; Rodrigues, Marco Antônio Siqueira; Bernardes, Andréa Moura; Ferreira, Jane Zoppas; Ferreira, Carlos Arthur

doi:10.1016/j.desal.2005.05.019

Cited by 44 publications

(30 citation statements)

References 19 publications

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“…The ATR FT-IR spectra are similar to those of PAni-blended electrically conductive materials that include PAni-chitosan and PAni-polyurethane substrates. [36,37] The Raman spectra strengthened our early conclusion of the presence of PAni on the surface of the nanofiber composites. The characteristic two peaks for CPSA-PAni are observed at 1 330 cm À1 (C-N) and 1 601 cm À1 (phenyl C-C), which are present in spectra for PACL-2 and PACL-3 nanofibers, whereas both peaks disappear from the spectra of the PACL-1 nanofibers.…”

Section: Resultssupporting

confidence: 55%

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Development of Electroactive and Elastic Nanofibers that contain Polyaniline and Poly(L‐lactide‐co‐ε‐caprolactone) for the Control of Cell Adhesion

Jeong¹,

Jun²,

Choi³

et al. 2008

Macromolecular Bioscience

169

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In this work, electrically conductive polyaniline (PAni) doped with camphorsulfonic acid (CPSA) is blended with poly(L-lactide-co-epsilon-caprolactone) (PLCL), and then electrospun to prepare uniform nanofibers. The CPSA-PAni/PLCL nanofibers show a smooth fiber structure without coarse lumps or beads and consistent fiber diameters (which range from 100 to 700 nm) even with an increase in the amount of CPSA-PAni (from 0 to 30 wt.-%). However, the elongation at break decreases from 391.54 +/- 9.20% to 207.85 +/- 6.74% when 30% of CPSA-PAni is incorporated. Analysis of the surface of the nanofibers demonstrates the presence of homogeneously blended CPSA-PAni. Most importantly, a four-point probe analysis reveals that electrical properties are maintained in the nanofibers where the conductivity is significantly increased from 0.0015 to 0.0138 S x cm(-1) when the nanofibers are prepared with 30% CPSA-PAni. The cell adhesion tests using human dermal fibroblasts, NIH-3T3 fibroblasts, and C2C12 myoblasts demonstrate significantly higher adhesion on the CPSA-PAni/PLCL nanofibers than pure PLCL nanofibers. In addition, the growth of NIH-3T3 fibroblasts is enhanced under the stimulation of various direct current flows. The CPSA-PAni/PLCL nanofibers with electrically conductive properties may potentially be used as a platform substrate to study the effect of electrical signals on cell activities and to direct desirable cell function for tissue engineering applications.

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Section: Resultssupporting

confidence: 55%

“…These TGA profiles are similar to those of conductive and non-conductive composite materials, which include polyanilinepolyurethane and polyaniline-chitosan substrates. [36,37] in vitro Cell Response…”

Section: Resultsmentioning

confidence: 99%

Development of Electroactive and Elastic Nanofibers that contain Polyaniline and Poly(L‐lactide‐co‐ε‐caprolactone) for the Control of Cell Adhesion

Jeong¹,

Jun²,

Choi³

et al. 2008

Macromolecular Bioscience

169

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“…The maximum decomposition rates for the first and second stage of neat PU were around 410 and 482 °C, while those of PU/1% PANI blend were at 424 and 499 °C. This increase for blend was because of the interaction between the PU and PANI chains [28] and the formation of urea linkages. In addition, it was also found that the char residue increased with the PANI content.…”

Section: Thermogravimetric Analysismentioning

confidence: 96%

Thermal, mechanical and electrical studies of novel shape memory polyurethane/polyaniline blends

2015

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Shape memory polymer (SMP) blends based on polyurethane (PU) and polyaniline (PANI) were prepared via chemical in situ polymerization process. The thermal, mechanical, electrical and shape memory properties were investigated. The structural characterization and morphology of the polymer blends were inspected by Fourier transform infrared (FTIR) and scanning electron microscopy (SEM), respectively. The 1 wt% of PANI loading enhanced the thermal stability of the system up to 339 °C. According to differential scanning calorimetry (DSC), the glass transition temperature (T g ) and melting temperature (T m ) of PU/PANI blends increased with the polyaniline loading (0.1 wt%1 wt%). Improved mechanical properties such as tensile strength and Young's modulus of PU matrix were also observed with PANI. Moreover, the electrical conductivity of PU/PANI blends was also found to be a function of PANI loading. Remarkable recoverability of thermally triggered shape memory (SM) behavior to the extent of 96% was achieved for 1 wt% PANI blend.

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“…Conducting polymers have been extensively studied in recent years due to a great variety of possible applications in several fields, such as energy storage systems [1][2][3], electrocatalysis [4][5][6], electrodialysis membranes [7][8][9][10], sensors [11][12][13], and anticorrosive coatings [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. They exhibit different oxidation states and behave as electronic or mixed conductors [28].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical impedance spectroscopy investigation of chlorinated rubber‐based coatings containing polyaniline as anticorrosion agent

Baldissera

Freitas

Ferreira

2010

Materials & Corrosion

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Corrosion protection of mild steel by a newly developed chlorinated rubber (CR)‐based coating system containing the inherently conductive polymer polyaniline (PAni) as an anticorrosion agent was studied. The synthesis of PAni and preparation of CR‐based paint containing this polymer are described herein. The corrosion behavior of mild steel samples coated with a CR resin, CR/PAni‐EB (emeraldine base), CR/PAni‐ES (emeraldine salt), and CR/DBSA‐doped PAni were investigated in 3.5% NaCl solution. For this purpose, electrochemical impedance spectroscopy and corrosion potential versus time measurements were utilized. It was found that the addition of the two forms of PAni, doped and undoped, to the CR resin increased its corrosion protection efficiency.

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Development of polyurethane/polyaniline membranes for zinc recovery through electrodialysis

Cited by 44 publications

References 19 publications

Development of Electroactive and Elastic Nanofibers that contain Polyaniline and Poly(L‐lactide‐co‐ε‐caprolactone) for the Control of Cell Adhesion

Development of Electroactive and Elastic Nanofibers that contain Polyaniline and Poly(L‐lactide‐co‐ε‐caprolactone) for the Control of Cell Adhesion

Thermal, mechanical and electrical studies of novel shape memory polyurethane/polyaniline blends

Electrochemical impedance spectroscopy investigation of chlorinated rubber‐based coatings containing polyaniline as anticorrosion agent

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