Results 31 to 40 of about 13,229 (248)

An overview of organic/inorganic membranes based on sulfonated poly ether ether ketone for application in proton exchange membrane fuel cells [PDF]

open access: yesJournal of Renewable Energy and Environment, 2017
Nowadays, proton exchange membrane fuel cells (PEMFCs) are the most promising green energy conversion devices for portable and stationary applications.
Somayeh Sarirchi, S. Rowshanzamir
doaj   +1 more source

Tuning high-temperature dielectric properties of poly ether ether ketone by using self-crosslinkable polyetherimide and nanoparticles

open access: yesPolymer Testing, 2023
Polymer dielectric materials operating at high temperatures are widely needed for advanced electrical and electronic systems. However, currently commercial polymer dielectrics are limited to relatively low operating temperatures.
Sen Niu   +5 more
doaj   +1 more source

Crosslinked SPEEK membranes: Mechanical, thermal, and hydrothermal properties [PDF]

open access: yes, 2012
The thermal and mechanical behavior, the water uptake (WU), and water diffusion coefficient of sulfonated poly(ether ether ketone) (SPEEK)membranes annealed at 180 degrees C for different times were explored by high-resolution thermogravimetric analysis,
Chailan, J   +6 more
core   +3 more sources

Resin content calculation of carbon fiber/poly (ether ether ketone) by thermogravimetric analysis

open access: yesPolymer Testing, 2023
Resin content of composites is a dominant factor of macroscopic properties and essential to study. Taking carbon fiber/poly (ether ether ketone) (CF/PEEK) composites molded by various means as examples, a method for resin content calculation obtained ...
Chunrui Lu   +3 more
doaj   +1 more source

The effects of water on the morphology and the swelling behavior of sulfonated poly(ether ether ketone) films [PDF]

open access: yes, 2015
Thin sulfonated poly(ether ether ketone) films swell excessively in water. The extent of water-induced swelling is shown to be correlated with the optical anisotropy of the films, due to two distinct phenomena. Firstly, the optical anisotropy is directly
Akkilic, N.   +3 more
core   +5 more sources

Effect of Chemical Structure on the Performance of Sulfonated Poly(aryl ether sulfone) Composite Nanofiltration Membranes

open access: yesMembranes, 2019
This paper discusses the effect of the chemical structure of sulfonated poly(aryl ether sulfone) on the performance of composite nanofiltration membranes.
Shouhai Zhang   +5 more
doaj   +1 more source

Glass bead filled Polyetherketone (PEK) composite by High Temperature Laser Sintering (HT-LS) [PDF]

open access: yes, 2015
Copyright © 2015 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Materials and Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and ...
Ghita, O., James, Edward, Wang, Yuan
core   +1 more source

3D Network Structural Poly (Aryl Ether Ketone)-Polybenzimidazole Polymer for High-Temperature Proton Exchange Membrane Fuel Cells

open access: yesAdvances in Polymer Technology, 2020
Poor mechanical property is a critical problem for phosphoric acid-doped high-temperature proton exchange membranes (HT-PEMs). In order to address this concern, in this work, a 3D network structural poly (aryl ether ketone)-polybenzimidazole (PAEK-cr-PBI)
Junqiao Jiang   +5 more
doaj   +1 more source

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

open access: yesAngewandte Chemie, EarlyView.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis   +2 more
wiley   +2 more sources

Preparation and Characterization of UV Irradiated SPEEK/Chitosan Membranes

open access: yesInternational Journal of Electrochemical Science, 2012
Cross-linked composite membranes of sulfonated poly(ether ether ketone) (SPEEK) with a chitosan content up to 50 wt%, were prepared by solution cast technique and ultraviolet (UV) curing.
N.A. Aini   +5 more
doaj   +1 more source

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