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Electrochemical properties of sulfonated PEEK used for ion exchange membranes
Membranes with improved selectivity, stability, and non-fouling properties will be important in future chemical and waste treatment applications. Sulfonated poly(ether ether ketone)s (S-PEEKs) based… Expand
An Iso-random Bi Bi Mechanism for Adenylate Kinase*
An iso-random Bi Bi mechanism has been proposed for adenylate kinase. In this mechanism, one of the enzyme forms can bind the substrates MgATP and AMP, whereas the other form can bind the products… Expand
Capillary electrochromatography with thermo-optical absorbance detection for the analysis of phenylthiohydantoin-amino acids.
Capillary columns were packed with 3 microns C18 stationary phase, interfaced with an ultraviolet-laser based thermo-optical absorbance detector, and evaluated for separation of a mixture of… Expand
Direct synthesis of sulfonated aromatic poly(ether ether ketone) proton exchange membranes for fuel cell applications
Abstract Proton exchange membrane fuel cells (PEMFC) are promising new power sources for vehicles and portable devices. Membranes currently used in PEMFC are perfluorinated polymers such as Nafion ®… Expand
Preparation and properties of sulfonated poly(ether ether ketone)s (SPEEK)/polypyrrole composite membranes for direct methanol fuel cells
Polypyrrole (Ppy) was successfully introduced into methyl substituted sulfonated poly(ether ether ketone) (SPEEK) membranes by polymerization in SPEEK solutions to improve their methanol resistance.… Expand
SPEEKK/polyaniline (PANI) composite membranes for direct methanol fuel cell usages
SPEEKK/PANI composite membranes were prepared and characterized for direct methanol fuel cell (DMFC) usages. The morphology change of membranes after the addition of PANI was studied in detail. The… Expand
Non-aqueous capillary electrophoresis of tamoxifen and its acid hydrolysis products.
Tamoxifen and its acid hydrolysis products were separated and tentatively identified by non-aqueous capillary electrophoresis with thermooptical absorbance and electrospray ionization mass… Expand
Properties of composite membranes based on sulfonated poly(ether ether ketone)s (SPEEK)/phenoxy resin (PHR) for direct methanol fuel cells usages
Abstract A series of proton exchange composite membranes were prepared by solution method through blending of methyl substituted highly sulfonated poly (ether ether ketone)s (SPEEK) with phenoxy… Expand
Mixed-gas CO2/CH4 and CO2/N2 separation with sulfonated PEEK membranes
This paper describes the performance of sulfonated aromatic poly(ether ether ketone) (s-peek) membranes, directly prepared from the sulfonated monomer, for co2 separation from gas mixtures containing… Expand
Polypyrrole modified solvent resistant nanofiltration membranes
New solvent resistant nanofiltration (SRNF) membranes with polypyrrole (PPy) modified toplayer were prepared on different types support by in situ pyrrole polymerization. The morphology of the… Expand