Results 131 to 140 of about 457 (154)
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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
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MRS Proceedings, 2005
ABSTRACTComposite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM).
MECHERI, BARBARA +5 more
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ABSTRACTComposite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM).
MECHERI, BARBARA +5 more
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AIP Conference Proceedings, 2013
A simple and effective method for the preparation of sulfonated polyether ether ketone (SPEEK) based composites with electrochemical reduced graphene oxide (EGO) as inorganic fillers has been described. The resulting dispersions are homogeneous and the cast membranes show significant improvement on tensile strength and thermal properties.
S. Seetharaman +2 more
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A simple and effective method for the preparation of sulfonated polyether ether ketone (SPEEK) based composites with electrochemical reduced graphene oxide (EGO) as inorganic fillers has been described. The resulting dispersions are homogeneous and the cast membranes show significant improvement on tensile strength and thermal properties.
S. Seetharaman +2 more
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Journal of Materials Science Letters, 2003
Direct methanol fuel cells (DMFC) have attracted considerable attention, since they offer numerous benefits, such as high efficiency, high power density, low or zero emissions and reliability. The proton exchange membrane (PEM) is one of the most critical components in the direct methanol fuel cell. Generally, PEMs with high proton conductivity and low
Lei Li, Jun Zhang, Yuxin Wang
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Direct methanol fuel cells (DMFC) have attracted considerable attention, since they offer numerous benefits, such as high efficiency, high power density, low or zero emissions and reliability. The proton exchange membrane (PEM) is one of the most critical components in the direct methanol fuel cell. Generally, PEMs with high proton conductivity and low
Lei Li, Jun Zhang, Yuxin Wang
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Journal of Applied Polymer Science, 2020
AbstractThe effects of sulfonated polyether sulfone (s‐PSF) with different sulfonation degrees on the interfacial properties of carbon fiber (CF)/poly(ether‐ether‐ketone) (PEEK) composites were investigated systematically. The performance of the modified CF and the corresponding CF/PEEK composites and was tested and characterized.
Tianning Ren, Guangming Zhu, Xiao Hou
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AbstractThe effects of sulfonated polyether sulfone (s‐PSF) with different sulfonation degrees on the interfacial properties of carbon fiber (CF)/poly(ether‐ether‐ketone) (PEEK) composites were investigated systematically. The performance of the modified CF and the corresponding CF/PEEK composites and was tested and characterized.
Tianning Ren, Guangming Zhu, Xiao Hou
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Journal of Power Sources, 2014
In an attempt to reduce the Li+ concentration polarization and electrolyte depletion from the electrode porous space, sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups (SPEEK-FSA-Li) is prepared and attempted as ionic conductivity binder.
Zengbin Wei +5 more
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In an attempt to reduce the Li+ concentration polarization and electrolyte depletion from the electrode porous space, sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups (SPEEK-FSA-Li) is prepared and attempted as ionic conductivity binder.
Zengbin Wei +5 more
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Morphology Effect on Proton Dynamics in Nafion®117 and Sulfonated Polyether Ether Ketone
Journal of the Physical Society of Japan, 2016We report results of our experimental and theoretical studies on the dynamics of proton conductivity in Nafion® 117 and self-fabricated sulfonated polyether ether ketone (SPEEK) membranes. Knowing that the presence of water molecules in the diffusion process results in a lower energy barrier, we determined the diffusion barriers and corresponding ...
Jun Xing Leong +4 more
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