Results 161 to 170 of about 1,493 (193)
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Performances of Sulfonated Polyether Ether Ketone Composite Membranes for Fuel Cell Applications
International Journal of Nanoscience, 2015A variety of modification approaches such as cross-linking and nano blending have been explored to prepare efficient membranes based on Sulfonated polyether ether ketone (SPEEK). The addition filler is also one of the most widely used approaches to modify the SPEEK.
Jun Ma +4 more
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Sensors and Actuators B: Chemical, 2020
Abstract The development of flexible and high-performance humidity sensors for continuous wireless monitoring is receiving increasing attention. In this work, electrospun sulfonated polyether ether ketone (SPEEK) nanofibres with different sulfonation degrees were prepared and directly deposited onto flexible substrates for humidity sensor ...
Jonghyun Choi +2 more
exaly +2 more sources
Abstract The development of flexible and high-performance humidity sensors for continuous wireless monitoring is receiving increasing attention. In this work, electrospun sulfonated polyether ether ketone (SPEEK) nanofibres with different sulfonation degrees were prepared and directly deposited onto flexible substrates for humidity sensor ...
Jonghyun Choi +2 more
exaly +2 more sources
Carbohydrate Polymers, 2021
Developing bioactive composites to fill bone cavities caused by disease, injury or surgery still remains a challenge. The aim of this research was to develop a new nanostructured sodium alginate/sulfonated polyether ether ketone/nano-hydroxyapatite (Alg/SPEEK/HA) biocomposite via a simple chemical precipitation strategy. Structural analysis was carried
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Developing bioactive composites to fill bone cavities caused by disease, injury or surgery still remains a challenge. The aim of this research was to develop a new nanostructured sodium alginate/sulfonated polyether ether ketone/nano-hydroxyapatite (Alg/SPEEK/HA) biocomposite via a simple chemical precipitation strategy. Structural analysis was carried
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AIP Conference Proceedings, 2020
The challenge of commercialization of fuel cells in Indonesia is mainly the caused by high manufacturing costs, particulary the cost of electrolyte membrane which is one of the important components of fuel cells. The use of inexpensive and abundant local materials such as sulfonated polyether ether ketone polymers and chitosan, to replace the currently
Tri Harmoko +3 more
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The challenge of commercialization of fuel cells in Indonesia is mainly the caused by high manufacturing costs, particulary the cost of electrolyte membrane which is one of the important components of fuel cells. The use of inexpensive and abundant local materials such as sulfonated polyether ether ketone polymers and chitosan, to replace the currently
Tri Harmoko +3 more
openaire +1 more source
Journal of the Mechanical Behavior of Biomedical Materials, 2023
The carbon fiber reinforced polyetheretherketone (CFR-PEEK) has been increasingly used in orthopedics dentistry due to its excellent biocompatibility and mechanical properties. However, the biological inertness and poor antibacterial activity limit its clinical applications. This paper focused on the performances of CFR-PEEK with porous morphology that
Jingjing Su +9 more
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The carbon fiber reinforced polyetheretherketone (CFR-PEEK) has been increasingly used in orthopedics dentistry due to its excellent biocompatibility and mechanical properties. However, the biological inertness and poor antibacterial activity limit its clinical applications. This paper focused on the performances of CFR-PEEK with porous morphology that
Jingjing Su +9 more
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Journal of Polymer Science, Part B: Polymer Physics, 2000
The influence of blending with polyetherimide (PEI) and doping with HCl and H3PO4 on the properties of sulfonated polyether ether ketone (SPEEK) was studied. Blending with PEI first results in an increase and then in a decrease in membrane swelling at PEI concentrations greater than 5%.
S M Javaid Zaidi, S Kaliaguine
exaly +3 more sources
The influence of blending with polyetherimide (PEI) and doping with HCl and H3PO4 on the properties of sulfonated polyether ether ketone (SPEEK) was studied. Blending with PEI first results in an increase and then in a decrease in membrane swelling at PEI concentrations greater than 5%.
S M Javaid Zaidi, S Kaliaguine
exaly +3 more sources
Scaleup suitability of sulfonated polyether ether ketone membrane‐based microbial fuel cell
Environmental Progress & Sustainable Energy, 2015A sustainable clean energy production from oxidation of biodegradable materials was carried out in a microbial fuel cell (MFC) stack consisting of four MFC units. The stack was fabricated and tested for its scalability using a high engineering, low oxygen mass transfer membrane; namely, sulfonated poly ether ether ketone. Sodium acetate was used as the
Mahendiravarman Elangovan +1 more
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International Journal of Hydrogen Energy, 2019
Abstract A model of a membrane-electrode assembly (MEA) with a Sulfonated Poly Ether-Ether Ketone (SPEEK) membrane is presented and compared with Nafion membrane MEA. The model used the specific hydration and proton conductivity curves developed for SPEEK membrane and accounted for feed-gas momentum and mass transfer, electro-potential in both the ...
Soosan Rowshanzamir
exaly +2 more sources
Abstract A model of a membrane-electrode assembly (MEA) with a Sulfonated Poly Ether-Ether Ketone (SPEEK) membrane is presented and compared with Nafion membrane MEA. The model used the specific hydration and proton conductivity curves developed for SPEEK membrane and accounted for feed-gas momentum and mass transfer, electro-potential in both the ...
Soosan Rowshanzamir
exaly +2 more sources
International Journal of Hydrogen Energy, 2015
Abstract In this study, a single layer graphene oxide is successfully synthesized and used as a nano-filler in a self-fabricated sulfonated polyether ether ketone (SPEEK) to make a composite proton exchange membrane, graphene oxide/SPEEK (GO-SPEEK). The properties of GO-SPEEK, Nafion® 117 and SPEEK are then compared to ascertain their selectivity to ...
Jun Xing Leong +2 more
exaly +2 more sources
Abstract In this study, a single layer graphene oxide is successfully synthesized and used as a nano-filler in a self-fabricated sulfonated polyether ether ketone (SPEEK) to make a composite proton exchange membrane, graphene oxide/SPEEK (GO-SPEEK). The properties of GO-SPEEK, Nafion® 117 and SPEEK are then compared to ascertain their selectivity to ...
Jun Xing Leong +2 more
exaly +2 more sources
Journal of the Science of Food and Agriculture
AbstractBACKGROUNDPolyether ether ketone (PEEK) was modified by a sulfuric and nitric acid mixed system to improve the solubility of the material and the gas selective permeability of the film. SN1 and SN5, synthesized from mixed acid systems (with ratios of nitric acid and sulfuric acid of 1:1 and 1:5, respectively) were chosen because they had ...
Yuting Huang
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AbstractBACKGROUNDPolyether ether ketone (PEEK) was modified by a sulfuric and nitric acid mixed system to improve the solubility of the material and the gas selective permeability of the film. SN1 and SN5, synthesized from mixed acid systems (with ratios of nitric acid and sulfuric acid of 1:1 and 1:5, respectively) were chosen because they had ...
Yuting Huang
exaly +3 more sources