Nanomaterials, 2018 The zeolitic imidazolate frameworks (ZIFs) ZIF-8, ZIF-67, and a Zn/Co bimetallic mixture (ZMix) were synthesized and used as fillers in the preparation of composite sulfonated poly(ether ether ketone) (SPEEK) membranes.
Arturo Barjola +4 more
doaj +1 more source
The effects of water on the morphology and the swelling behavior of sulfonated poly(ether ether ketone) films [PDF]
, 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
Using life-history traits to explain bird population responses to changing weather variability [PDF]
, 2011 Bird population dynamics are expected to change in response to increased weather variability, an expression of climate change. The extent to which species are sensitive to effects of weather on survival and reproduction depends on their life-history ...
Braak, C.J.F., ter +4 more
core +2 more sources
Membranes, 2021 Phosphotungstic acid (HPW)-filled composite proton exchange membranes possess high proton conductivity under low relative humidity (RH). However, the leaching of HPW limits their wide application.
Shaojian He +6 more
doaj +1 more source
A covalent organic/inorganic hybrid proton exchange polymeric membrane: synthesis and characterization [PDF]
, 2005 Commercial polyetheretherketone (Victrex PEEK) was sulfonated up to 90% degree of sulfonation (DS), then reacted with SiCl4 to obtain a hybrid polymer. The product was characterized by 29-Si NMR and ATR/FTIR spectroscopies demonstrating the formation of
D'Epifanio, A +5 more
core +1 more source
Ion exchange membranes based upon crosslinked sulfonated polyethersulfone for electrochemical applications [PDF]
, 2013 Synthesis and characterization of new ion exchange membranes made from chlorosulfonated polyethersul- fone (SO2Cl-PES) crosslinked by polyaminated crosslinking reagents have been performed.
FAUVARQUE, J.F +5 more
core +6 more sources
Improvement of COD removal and electricity generation in a MFC through embedding sulfonated reduced graphene oxide in a SPEEK proton exchange membrane [PDF]
Journal of Applied Research in Water and WastewaterGraphene oxide has attracted many interests in the recent decade due to its unique mechanical and chemical properties. This study focuses on the modification of graphene oxide and preparation proton exchange membrane (PEM) by sulfonated poly ether ether ...
Nasim Saniei +4 more
doaj +1 more source
Study of the variation of catalyst loading in cathode for SPEEK/CSMM membrane in direct methanol fuel cell (DMFC) [PDF]
, 2014 Variation of anode catalyst loading for modified sulfonated poly (ether ether ketone) (SPEEK) with charged surface modifying macromolecules (cSMM) membrane was studied, in order to get the higher performance in DMFC.
Jaafar, Juhana +3 more
core +1 more source
Electrochemical Properties of SPEEK/Epoxy/ Graphene Oxide Composites as Proton Exchange Membrane
International Journal of Electrochemical Science, 2018 The DS 68% SPEEK composite membranes were prepared by post-sulfonation. Using diethylenetriamine as the epoxy cross-linking agent, which is uniformly distributed in the grafted SPEEK to form SPEEK/epoxy semi-interpenetrating network structure and explore
Zhengping Zhao +4 more
doaj +1 more source
Polymer Testing, 2021 Sulfonated polyether ether ketone is currently under investigation to replace the expensive Nafion® as polymer electrolyte membrane. Sulfonic acid group is hydrophilic in nature and plays a key role in proton transfer in polymer electrolyte membranes ...
Sher Ayaz, Hai-Yin Yu
doaj +1 more source