Results 11 to 20 of about 845 (172)

Polydopamine grafting polyether ether ketone to stabilize growth factor for efficient osteonecrosis repair [PDF]

open access: yesScientific Reports
This study examines the biocompatibility, osteogenic potential, and effectiveness of polyether ether ketone (PEEK) composites for treating osteonecrosis, seeking to establish a theoretical basis for clinical application.
Yi Sun   +10 more
doaj   +2 more sources

Optimized Sulfonated Poly(Ether Ether Ketone) Membranes for In-House Produced Small-Sized Vanadium Redox Flow Battery Set-Up [PDF]

open access: yesMembranes
The ionic exchange membranes represent a core component of redox flow batteries. Their features strongly affect the performance, durability, cost, and efficiency of these energy systems.
Antonino Rizzuti   +6 more
doaj   +2 more sources

Proton-conducting polymer electrolyte membranes based on sulfonated PEEK and blends of protic ionic liquids with different acidities [PDF]

open access: yesScientific Reports
Protic ionic liquids (PILs) immobilised in an ionogene host polymer represent an intriguing alternative to the state-of-the-art commercial fluoropolymer-based membranes as proton conducting electrolytes for future intermediate-temperature fuel cells (T > 
V. Theußl   +5 more
doaj   +2 more sources

Determination of the degree of sulfonation in cross-linked and non-cross-linked Poly(ether ether ketone) using different analytical techniques [PDF]

open access: yesHeliyon
The degree of sulfonation (DS) is a key property of sulfonated polymers, as it significantly influences their swelling behaviour, conductivity and mechanical properties.
Abdul G. Al Lafi   +4 more
doaj   +2 more sources

Boosting dimensional stability and proton conductive of proton exchange membrane by introducing SO3H-UiO-66 coated nanofibers [PDF]

open access: yesE3S Web of Conferences, 2021
In this work, we fabricated cross-linked pre-oxidized polyacrylonitrile nanofibers (PPNF) coating SO3H-UiO-66 coated (named SU6@PPNF), which was introduced into sulfonated poly (ether ether ketone) SPEEK to produce membrane with superior proton ...
Zhu Bensheng   +7 more
doaj   +1 more source

Sulfonated Poly(ether ether ketone) and Organically Modified Montmorillonite Nanocomposite Membranes for Direct Methanol Fuel Cell [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2022
Hypothesis: The modification of aromatic polymers, such as poly(ether ether ketone) (PEEK), by sulfonation modification, can result in fabricating polyelectrolyte membranes (PEMs) as the alternatives to Nafion for direct methanol fuel cell (DMFC ...
Mahdi Tohidian   +5 more
doaj   +1 more source

Studies on the SPEEK membrane with low degree of sulfonation as a stable proton exchange membrane for fuel cell applications [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2017
Sulfonated poly (ether ether ketone) (SPEEK) with a low degree of sulfonation (DS = 40%) was prepared for proton exchange membrane fuel cells (PEMFC).
Mohammad Javad Parnian   +2 more
doaj   +1 more source

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

open access: yesMembranes, 2022
This work provides a comprehensive review on the incorporation of ionic liquid (ILs) into polymer blends and their utilization as proton exchanges membranes (PEM).
Adnan Alashkar   +3 more
doaj   +1 more source

Spectroscopy and Cyclic Voltammetry Properties of SPEEK/CuO Nanocomposite at Screen-Printed Gold Electrodes

open access: yesNanomaterials, 2022
A successful electrochemical study of copper oxide nanoparticles (CuO NPs), sulfonated poly (ether ether ketone) polymer (SPEEK), and sulfonated polyether ether ketone-copper oxide (SPEEK/CuO) nanocomposite on bare gold electrodes was conducted.
Omolola E. Fayemi   +3 more
doaj   +1 more source

pH and pCl Operational Parameters in Some Metallic Ions Separation with Composite Chitosan/Sulfonated Polyether Ether Ketone/Polypropylene Hollow Fibers Membranes

open access: yesMembranes, 2022
The development of new composite membranes is required to separate chemical species from aggressive environments without using corrective reagents. One such case is represented by the high hydrochloric acid mixture (very low pH and pCl) that contains ...
Anca Maria Cimbru   +9 more
doaj   +1 more source

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