Effect of phase separation and adsorbed water on power consumption and current efficiency of terpolymer conetwork-based anion exchange membrane

Chatterjee, Uma; Bhadja, Vaibhavee; Jewrajka, Suresh K.

doi:10.1039/c4ta03474k

Cited by 35 publications

(54 citation statements)

References 30 publications

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“…[4][5][6][7] These polymeric conetworks have diverse applications such as nanotemplates for organic/inorganic nanohybrids, 8 pervaporation membranes, 9 membranes for water desalination via electrodialysis, 10,11 supports for high efficiency enzyme catalysis, 12 antifouling/antimicrobial coatings, [13][14][15] biomaterials, such as controlled drug release matrices, 16,17 and scaffolds for tissue engineering. 1-7 APCN gels are mostly prepared by radical polymerization of telechelic macro-monomers containing at least two polymerizable groups with a selected low molecular weight monomer.…”

Section: Introductionmentioning

confidence: 99%

Degradable/cytocompatible and pH responsive amphiphilic conetwork gels based on agarose-graft copolymers and polycaprolactone

et al. 2015

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Amphiphilic conetwork (APCN) gels have emerged as an important class of biomaterials due to their diverse applications. APCN gels based on biocompatible/biodegradable polymers are useful for controlled release and tissue engineering applications. Herein, we report a facile synthesis of APCN gel films by click type sequential nucleophilic substitution reaction between pendent tertiary amine groups of agarose-g-poly(methyl methacrylate)-b(co)-poly(2-dimethylamino)ethyl methacrylate [Agr-g-PMMAb(co)-PDMA] copolymers and activated benzyl chloride groups of polychloromethyl styrene or benzyl methyl chloride terminated polycaprolactone. A linear triblock copolymer (PDMA-b-PMMA-b-PDMA) containing a central PMMA block and end PDMA blocks was also employed for the synthesis of APCN gels for comparison purposes. These APCN gels exhibit co-continuous nanophase morphology, pH responsive water swelling and pH triggered release of hydrophobic and hydrophilic drugs. These gels are biodegradable/cytocompatible as confirmed by MTT assay and hemolysis experiment. The degraded species undergo micellization in aqueous environment and display a low critical micelle concentration.Milled APCN gel particles are injectable through a hypodermic syringe. This synthesis approach is extremely useful for the preparation of a library of APCN gels of diverse architectures and compositions for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Degradable/cytocompatible and pH responsive amphiphilic conetwork gels based on agarose-graft copolymers and polycaprolactone

et al. 2015

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“…Various kinds of IEMs have been developed by many researchers suitable for electrodialysis for water desalination. [8][9][10] Now days, more emphasis is being given to develop anion exchange membranes (AEM) owing to the advantages over cation exchange membranes such as use of non hazardous chemicals during synthesis and faster kinetics of oxygen reduction reactions etc. Whereas preparation of anion exchange membranes is being widely utilized for various, energy storage devices and electrochemical processes.…”

Section: Introductionmentioning

confidence: 99%

An environmentally friendly process for the synthesis of an fGO modified anion exchange membrane for electro-membrane applications

et al. 2015

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“…21,22 Ionic conductivity (K m ) of the membranes Ionic conductivity measurements of AEM, CEM, AL, CL and BPM were determined aer equilibrating the samples in 0.1 N NaCl solutions for 24 h. For the measurement the membranes are sandwiched between two square piece graphite electrodes (1.0 cm 2 ). 21,22 Ionic conductivity (K m ) of the membranes Ionic conductivity measurements of AEM, CEM, AL, CL and BPM were determined aer equilibrating the samples in 0.1 N NaCl solutions for 24 h. For the measurement the membranes are sandwiched between two square piece graphite electrodes (1.0 cm 2 ).…”

Section: Water Uptakementioning

confidence: 99%

“…23 The performances of the prepared membranes are analyzed in terms of current efficiency and energy consumption calculated by the following equations; 21,22 Power consumption (W in kW h kg À1 ) during BPED process is dened as the amount of energy needed during hydrolysis of one kg salt. Different salt solutions (500 mL) of concentration 0.5 M and 500 mL water were circulated in three compartments (compartments 2, 3 and 4) at ow rate 5 L h À1 .…”

Section: Current-voltage (I-v) Curves For Bpm In Different Electrolytmentioning

confidence: 99%

Preparation of heterogeneous bipolar membranes and their performance evaluation for the regeneration of acid and alkali

et al. 2015

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A cost effective bipolar membrane has been prepared by the solution casting method for the hydrolysis of inorganic and organic salts using a bipolar electrodialysis technique. Two types of heterogeneousheterogeneous composite bipolar membranes (BPM) have been prepared. The first one is prepared by the dispersion of cation exchange resin powder in polystyrene solution and cast on a commercially available anion exchange membrane. The second type of BPM has been prepared by the dispersion of anion exchange resin powder in polystyrene solution and then cast on a commercially available cation exchange membrane. Both the BPMs have been prepared without using the interfacial layer required for water splitting. Both the BPMs exhibited low ionic resistance, moderate to high water uptake, high ionexchange capacity, high ionic conductivity, appropriate stability and high water splitting efficiency during the bipolar electrodialysis process. Water splitting efficiency of the prepared BPMs was also tested in a four compartment bipolar electrodialysis cell for converting sodium chloride and sodium formate/ sodium acetate into their corresponding acids and sodium hydroxide. During hydrolysis of 0.5 M sodium chloride 87-90% current efficiency and 5.23-3.78 kW h kg À1 power consumption values were observed for the two different types of BPMs. Similarly, during hydrolysis of 0.5 M sodium formate 92-94% current efficiency and 4.25-3.85 kW h kg À1 power consumption values were observed for both types of BPMs.The performance of BPMs slightly reduced during hydrolysis of 0.5 M sodium acetate solution due to the slower ionization of sodium acetate. The performance of the BPMs is comparable with commercial BPMs.

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Effect of phase separation and adsorbed water on power consumption and current efficiency of terpolymer conetwork-based anion exchange membrane

Cited by 35 publications

References 30 publications

Degradable/cytocompatible and pH responsive amphiphilic conetwork gels based on agarose-graft copolymers and polycaprolactone

Degradable/cytocompatible and pH responsive amphiphilic conetwork gels based on agarose-graft copolymers and polycaprolactone

An environmentally friendly process for the synthesis of an fGO modified anion exchange membrane for electro-membrane applications

Preparation of heterogeneous bipolar membranes and their performance evaluation for the regeneration of acid and alkali

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