Chitosan-based electrolyte composite membranesII. Mechanical properties and ionic conductivity

Wan, Ying; Creber, Katherine A. M.; Peppley, Brant A.; Bui, V. T.

doi:10.1016/j.memsci.2006.07.046

Cited by 78 publications

(54 citation statements)

References 38 publications

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“…-150 mV versus the pseudo-reference electrode. This is explained as the incorporation of CS biopolymer into the enzymatic composite matrix leads to a more resistive film, due to the low ionic conductivity of the CS biopolymer (Krajewska 2001;Wan et al 2003Wan et al , 2006.…”

Section: Preparation Of the Electrochemical Lactate Biosensormentioning

confidence: 99%

Electrochemical lactate biosensor based upon chitosan/carbon nanotubes modified screen-printed graphite electrodes for the determination of lactate in embryonic cell cultures

Hernández-Ibáñez

García‐Cruz

Montiel

et al. 2016

Biosensors and Bioelectronics

139

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Electrochemical lactate biosensor based upon chitosan/carbon nanotubes modified screen-printed graphite electrodes for the determination of lactate in embryonic cell cultures, Biosensors and Bioelectronic, http://dx.doi.org/10.1016/j.bios.2015.11.005 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. This novel electrochemical lactate biosensors analytical efficacy is explored towards the sensing of lactate in model (buffer) solutions and is found to exhibit a linear response towards lactate over the concentration range of 30.4 and 243.9 µM in phosphate buffer solution, with a corresponding limit of detection (based on 3-sigma) of 22.6 µM and exhibits a sensitivity of 3417 ± 131 µA M -1 according to the reproducibility study. These novel electrochemical lactate biosensors exhibit a high reproducibility, with a relative standard deviation of less than 3.8 % and an enzymatic response over 82 % after 5 months stored at 4 ºC. Furthermore, high performance liquid chromatography technique has been utilized to independently validate the electrochemical lactate biosensor for the determination of lactate in a commercial embryonic cell culture medium providing excellent agreement between the two analytical protocols.

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Section: Preparation Of the Electrochemical Lactate Biosensormentioning

confidence: 99%

Electrochemical lactate biosensor based upon chitosan/carbon nanotubes modified screen-printed graphite electrodes for the determination of lactate in embryonic cell cultures

Hernández-Ibáñez

García‐Cruz

Montiel

et al. 2016

Biosensors and Bioelectronics

139

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“…Carboxy Methylcellulose (CMC) and Chitosan (CS) (Wan et al, 2006;Kadir et al, 2011;Bakar and Isa, 2014) biopolymer blend have been chosen incorporate as the host due to its mechanical strength and superior properties like good proton, H + acceptor from Dopant (DTAB). Hence, the miscibility of the blend with no phase separation between the two polymers has been proven to enhance the ionic conductivity of SBEs (Rajendran et al, 2002;Baskaran et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Electrical Studies of Carboxy Methycellulose-Chitosan Blend Biopolymer Doped Dodecyltrimethyl Ammonium Bromide Solid Electrolytes

Bakar¹,

Muhamaruesa²,

Aniskari³

et al. 2015

American Journal of Applied Sciences

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In this study, a polymer-blend system consist of Carboxy Methylcellulose (CMC)-Chitosan (CS) as blend biopolymer host and doped with various composition of Dodecyltrimethyl Ammonium Bromide (DTAB) were successfully prepared via solution casting techniques. The new system has been analyzed through Electrical Impedance Spectroscopy (EIS) from temperature 303 K until 393 K to determine the conductivity of biopolymer electrolytes in the frequency range of 50 Hz to 1 MHz and the voltage between 5 to 50 mV. The optimum conductivity (1.86×10 −6 S.cm) at ambient temperature obtained for composition of 5 wt.% DTAB. The temperature dependence of ionic conductivity was found to obeys the Arrhenius rule where R 2 ≈1 and thermally activated. The dielectric studies show a non-Debye behavior of SBEs based on the analyzed data using complex permittivity, ε* and complex electrical modulus, M* of the sample at selected temperature.

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“…There are several general synthetic methodologies for the preparation of AAEMs [37][38]. The easiest is using inert polymers doped with concentrated aqueous KOH: Polybenzimidazole (PBI) [39][40][41][42][43], poly(vinyl alcohol) (PVA) [44], composite polymers such as PVA/hydroxyapatite (PVA/HAP) [45], quaternized-PVA/alumina (QPVA/Al 2 O 3 ) [46], PVA/titanium oxide (PVA/TiO 2 ) [47][48], chitosan and cross-linked chitosan [49][50][51], copolymers of epichlorohydrin and ethylene oxide [52], and cross-linked PVA/sulfosuccinic acid (10 wt.% SSA) [53] have all been doped with KOH and used as AAEMs. The invention US5569559 [54] describes the use of polar polymers (most preferred being polyethylene oxide) doped with alkaline metal hydroxides (such as KOH), alkaline-earth metal hydroxides or ammonium hydroxides such as tetrabutylammonium hydroxide.…”

Section: Preparation Of Alkaline Anion-exchange Membranes (Aaem)mentioning

confidence: 99%

Alkaline Anion Exchange Membranes for Fuel Cells- A Patent Review

Zeng¹,

Varcoe²

2011

CHENG

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Abstract:Recently, Alkaline Polymer Electrolyte Membrane Fuel Cells (APEMFCs) have been attracting worldwide attention mainly due to the prospect of using non-platinum-group metal catalysts.In addition, there is growing evidence that these fuel cells can operate with the presence of carbonate.This mini review will introduce the state-of-the-art in understanding of alkaline anion-exchange membranes (AAEMs) in solid alkaline fuel cells. Ionomers for membrane electrode assembly (MEA) fabrication and the chemistry of the carbonate and bicarbonate forms of the AAEMs are also discussed.Key references to the latest scientific literature and reviews are included, along with a brief overview of directly relevant patents.Keywords: Alkaline polymer electrolyte membrane fuel cell, alkaline anion exchange membrane, alkaline ionomer, hybrid membrane fuel cell, carbonate and bicarbonate.

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Chitosan-based electrolyte composite membranesII. Mechanical properties and ionic conductivity

Cited by 78 publications

References 38 publications

Electrochemical lactate biosensor based upon chitosan/carbon nanotubes modified screen-printed graphite electrodes for the determination of lactate in embryonic cell cultures

Electrochemical lactate biosensor based upon chitosan/carbon nanotubes modified screen-printed graphite electrodes for the determination of lactate in embryonic cell cultures

Electrical Studies of Carboxy Methycellulose-Chitosan Blend Biopolymer Doped Dodecyltrimethyl Ammonium Bromide Solid Electrolytes

Alkaline Anion Exchange Membranes for Fuel Cells- A Patent Review

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