Synthesis and characterisation of high impact polystyrene/polyaniline composite membranes for electrodialysis

Amado, Franco Dani Rico; Gondran, Evandro; Ferreira, Jane Zoppas; Rodrigues, Marco Antônio Siqueira; Ferreira, Carlos Arthur

doi:10.1016/j.memsci.2004.01.017

Cited by 65 publications

(43 citation statements)

References 17 publications

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“…In the literature review 2,3 some studies can be found using polymer nanocomposites based on others polymer matrices such as epoxy resin, polystyrene, polypropylene, polyethylene and polyurethane 3 . In this way, conducting polymers has been applied, for instance, for corrosion protection 4 , organic electroluminescent diodes 5 , electrical devices 6,7 , smart windows 8 and ion-exchange membranes 9,10 . Polyaniline (PAni) is the conducting polymer most widely used in blends with conventional polymers due to its good environmental stability, easy obtaining and low cost.…”

Section: Introductionmentioning

confidence: 99%

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

et al. 2013

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The study of conducting polymeric membranes is decisive in some areas, as in fuel cells and electrodialysis. This work aims the study of membranes using conventional and conductive polymers blends. Two types of polyurethane were used as conventional polymers, commercial thermoplastic polyurethane and polyurethane synthesized from castor oil and 4-4-dicyclohexylmethane isocyanate. Two kinds of conducting polymers were used, polyaniline doped with organic acid and a self doped polyaniline. The polymers and the membranes were characterized by electrical conductivity, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM). The synthesis of the membranes produced was proper, featuring a complete reaction, analyzed by FTIR. The membranes also showed good mechanical properties and thermal stability (≈ 220 °C). Among the membranes studied, the polyaniline doped with p-toluenesulphonic acid obtained higher thermal and viscoelastic properties. Thus they can be used in separation techniques using membranes.

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Section: Introductionmentioning

confidence: 99%

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

et al. 2013

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“…It is has been widely accepted that Nafion is the widely used ion exchange membrane in fuel cell industry, But these membranes are expensive and has its own limitations in terms of porosity and gas diffusion. [4,5] The polymer studied in this work was the high impact polystyrene (HIPS), a thermoplastic with melting temperature of 240 C, and possess excellent chemical resistance [5,6]. Polyaniline (PAni) and other conducting polymers are used in the membranes production because they present ion exchange characteristics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis And Characterisation Of Polyaniline (PAni) Membranes For Fuel Cell

Amado¹

2016

Adv. Mater. Lett.

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Over the past decade or so, alternative energy plays a pivotal role in addressing challenges posed by nature. Polymer electrolyte membrane fuel cell is one of the promising alternative energy and there has been significant research and technological investments done in this field. The key information and future prospective of the field is energy conversion and storage, both of which are essential in order to meet the challenges of global warming and the limited fossil fuel supply. However, polymer membrane in particular plays a crucial role in advancing this technology further. The utilization of conducting polymers in manufacturing membranes combining their electrochemical properties along with mechanical properties is of primary importance to enhance the efficiency of this system. In the present study blends of high impact polystyrene (HIPS) and polyaniline (PAni) were obtained with the aim of producing membranes for fuel cell. HIPS and PAni were dissolved in tetrachloroethylene, a common solvent for both materials. After dissolution, PAni was dispersed in an HIPS polymeric matrix. The membranes were molded on to glass plates using a laminator to keep thickness constant, and the solvent evaporated slowly for 24 h under room temperature. The amount of polyaniline used was 10 and 20 % weight. The electronic and structural properties were carried out using X-ray photoelectron spectroscopy (XPS), Thermogravimetric Analysis (TGA) Raman spectroscopy, Scanning electronic microscopic (SEM). The analysis indicate that PAni incorporation and its dispersion into the polymeric matrix modifies the membranes properties and show improvement in efficiency.

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“…Therefore this motivates the synthesis of the multilayer composite membrane to be used in the field of pressure filtration namely nano-(NF) and ultra-filtration (UF). The used of PANI in forming multilayer composite membranes have been reported in the application of fuel cell [22], desalination of saline water that consists of charged solutes [17,23], separation of carbon dioxide from methane [24] and also as electrochemical energy storage [25]. However the application in pressure filtration membrane under neutral solutes has yet to be reported.…”

Section: Introductionmentioning

confidence: 99%

Polyaniline Multi-Coated Onto Polyvinylidene Fluoride and Silicon Elastomer for Pressure Filtration Membranes

Ibrahim

Rohani²,

Mohammad³

2016

MJAS

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In this study, silicone rubbers were used to achieve the desire absorbing properties of PANI onto polyvinylidene fluoride (PVDF) microporous support. Poly (methyl-vinyl ether-alt-maleic acid) (PMVEA) polymeric acid was used as acid dopant to enhance the membrane filtration performance. Initially PVDF micro-porous support was dip-coated with silicone rubber elastomer solution followed by deposition with PANI by in-situ chemical oxidative polymerisation techniques using two-compartment cell in presence of PMVEA and ammonium persulfate as the oxidizing agent. The PANI multilayer composite membranes were characterized by gravimetric for PANI content measurement namely Scanning Electron Microscope (SEM), Fourier-Transform Infrared (FTIR), Differential Scanning Calorimetry (DSC) and contact angle. The PANI content was found to be more than 30 %. SEM, FTIR and DSC analysis have confirmed the presence of PANI onto the multilayers membrane while the contact angle of the membrane in presence of high loading PANI was 0 o indicating the super hydrophilicity than without the PANI presence of 78.8 o . The pressure filtration of PANI multilayer composite filtration membrane with a range of polyethylene glycols at different molecular weights was obtained based on the high flux up to 904.11 L/m 2 .h and reasonable molecular weight cut off of below 20,000 g/mol were obtained for the synthesized membrane.Keywords: polyaniline, silicone elastomer, polyvinylidene fluoride, chemical oxidative polymerisation, polymeric acid Abstrak Melaui kajian ini, getah silikon telah digunakan untuk mencapai keinginan menyerap sifat-sifat PANI ke polivinilidin fluorida (PVDF) sokongan mikrobeliang. Poli (vinil metil-eter-alt-asid malik) (PMVEA) asid polimer digunakan sebagai asid pendopan untuk meningkatkan prestasi penapisan membran. Pada mulanya mikro-berliang sokongan PVDF telah disalut dengan larutan elastomer getah silikon diikuti dengan pemendapan PANI oleh teknik pempolimeran kimia oksidatif sel in-situ menggunakan dua bahagian sel dengan kehadiran PMVEA dan ammonium persulfat sebagai agen pengoksidaan. Membran komposit PANI multilapis telah dicirikan secara gravimetrik untuk mengukur kandungan PANI, seperti Mikroskop Imbasan Elektron (SEM), Inframerah Transformasi Fourier (FTIR), kalorimeter pengimbasan pembezaan (DSC) dan sudut sentuhan. Kandungan PANI didapati melebihi 30%. Analsis SEM, FTIR dan DSC telah mengesahkan kehadiran PANI pada membran PANI multilapisan manakala sudut sentuhan membran dengan kehadrian PANI yang tinggi adalah 0 ° menunjukkan keadaan super hidrofilik berbanding tanpa kehadiran PANI adalah 78.8 °. Tekanan penapisan membran komposit PANI multilapis dengan pelbagai julat polietilena glikol pada berat molekul yang berbeza telah diperolehi berdasarkan fluks yang tinggi sehingga 904.11 L/m 2 .h dan berat molekul yang munasabah iaitu di bawah 20.000 g/mol bagi membran yang telah di sintesis.Kata kunci: polianilin, elastomer silikon, polivinilidin fluorida, pempolimeran oksidatif kimia, asid polimer

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Synthesis and characterisation of high impact polystyrene/polyaniline composite membranes for electrodialysis

Cited by 65 publications

References 17 publications

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

Castor oil and commercial thermoplastic polyurethane membranes modified with polyaniline: a comparative study

Synthesis And Characterisation Of Polyaniline (PAni) Membranes For Fuel Cell

Polyaniline Multi-Coated Onto Polyvinylidene Fluoride and Silicon Elastomer for Pressure Filtration Membranes

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