The morphology and conductivity of polypyrrole/polyurethane alloy films

Chiu, Hsien‐Tang; Lin, Jeng-Shyong; Huang, Chuanfeng

doi:10.1007/bf01092689

Cited by 30 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yttria stabilized zirconia shows good sensor application due to high operating temperature, which makes these oxide sensors suitable for automotive applications (Chiu et al 1992). A.C. electrical properties of conjugated polymers and theoretical high-frequency behaviour of multi layer films have been studied by Lee et al (2001).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and a.c. conductivity of polypyrrole/Y2O3 composites

et al. 2006

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and a.c. conductivity of polypyrrole/Y2O3 composites

et al. 2006

View full text Add to dashboard Cite

“…The synthesis of materials of PU with semiconducting polymers obtained by the typical chemical oxidation for different applications (actuators, tissue engineering, electrodes, etc. [23][24][25][26][27]) has been reported.…”

Section: Introductionmentioning

confidence: 99%

Plasma polymerization of pyrrole and aniline on polyurethane foams for microorganism immobilization and wastewater treatment

Antonio‐Carmona¹,

Martínez-Amador²,

Ovando‐Medina³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

a b s t r a c tThe development of new approaches for wastewater treatment is a current challenge for scientists and technologists. Microorganism immobilization onto supports for wastewater treatment is a powerful tool of low cost and highly efficient. Therefore, in this work pyrrole and aniline were copolymerized on the surface of polyurethane (PU) foams by the plasma polymerization method (changing the power input, atmosphere of reaction, and polymerization time) to obtain polyurethane/polypyrrole/polyaniline (PU/(PPy-co-PANI)) composites which were used as supports for microorganism immobilization and tested in municipal wastewater treatment in anaerobic batch and continuous packed-bed reactors. The supports were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and thermogravimetric analysis (TGA); chemical oxygen demand (COD) removal efficiency, during the treatment of municipal wastewater, was determined. It was observed from SEM analysis that PPy-co-PANI deposited onto the PU surface can be a homogeneous sheet coating PU or spherical nanostructures with average diameters between 50 nm and 1 µm, depending on the plasma polymerization conditions. Batch wastewater treatment after 48 h showed COD removal efficiencies of 30%, 28%, 26%, 61% and 56% for the PU and PU/(PPy-co-PANI) composites obtained at 40 W and 55 min, 30 W and 45 min, 50 W and 30 min (air plasma first) and, 45 W and 40 min (acrylic acid plasma first), respectively; which was associated to the polymers morphology deposited onto the PU foam surface. The composite of PU/(PPy-co-PANI) obtained at 50 W and 30 min (air plasma first) was tested in the continuous wastewater treatment, observing that for 54 h of hydraulic retention time (HRT), 76% of COD removal can be achieved.

show abstract

“…4 The activated sludge process employed for municipal wastewater treatment uses as much as 30% of the energy consumption in a wastewater treatment plant, most of which goes into aeration. Chiu et al 27 electrochemically polymerized pyrrole in a matrix of PU. 5,6 One way to improve anaerobic processes is microorganism immobilization onto solid supports.…”

Section: Introductionmentioning

confidence: 99%

“…Broda et al 26 obtained conducting materials of PPy nanoparticles and PU for tissue engineering, from the cytocompatibility assay data they observed no significant cytotoxic effect of the materials. Chiu et al 27 electrochemically polymerized pyrrole in a matrix of PU. Using this technique, it was observed that PPy grew in a treelike structure with molecular chains extending from the electrode surface into the solution.…”

Section: Introductionmentioning

confidence: 99%

Semiconducting polyurethane/polypyrrole/polyaniline for microorganism immobilization and wastewater treatment in anaerobic/aerobic sequential packed bed reactors

Antonio‐Carmona

Martínez-Amador

Martínez‐Gutiérrez

et al. 2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

The development of new materials for microorganism immobilization is very important in wastewater treatment. In this work polyurethane (PU) foams were modified polymerizing pyrrole and aniline onto their surface by chemical oxidization to obtain polyurethane/polypyrrole (PU/PPy), polyurethane/polyaniline (PU/PANI), and PU/(PPy‐co‐PANI) supports which were used to immobilize microorganisms for municipal wastewater treatment in batch mode and continuous flow using two sequential (anaerobic/aerobic) packed bed reactors (PBR) varying the total hydraulic retention time (HRT). The supports were characterized by Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM) and tested in chemical oxygen demand (COD) removal during treatment of a municipal wastewater. It was observed from SEM analysis that globular nanostructures of PPy and PPy‐co‐PANI were formed onto the PU surface with average diameters between 100 and 300 nm, which are typical of aqueous polymerization of pyrrole monomer; however irregular nanostructures were observed when PANI was homopolymerized onto the PU foam. Batch wastewater treatment after 14 days showed COD removal efficiencies of 77%, 69%, 78%, and 80% for PU foam, PU/PPy, PU/PANI, and PU/(PPy‐co‐PANI), respectively; which was explained as a function of polymers morphology deposited onto the PU foam surface. Also it was observed from the sequential PBR that for 24 h and 36 h of HRT, 80 and 90% of COD removal can be achieved; respectively.© 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42242.

show abstract

The morphology and conductivity of polypyrrole/polyurethane alloy films

Cited by 30 publications

References 10 publications

Synthesis, characterization and a.c. conductivity of polypyrrole/Y2O3 composites

Synthesis, characterization and a.c. conductivity of polypyrrole/Y2O3 composites

Plasma polymerization of pyrrole and aniline on polyurethane foams for microorganism immobilization and wastewater treatment

Semiconducting polyurethane/polypyrrole/polyaniline for microorganism immobilization and wastewater treatment in anaerobic/aerobic sequential packed bed reactors

Contact Info

Product

Resources

About