Results 21 to 30 of about 13,096 (247)
Synthesis and process optimization of electrospun PEEK-sulfonated nanofibers by response surface methodology [PDF]
, 2015 In this study electrospun nanofibers of partially sulfonated polyether ether ketone have been produced as a preliminary step for a possible development of composite proton exchange membranes for fuel cells.
Boaretti, Carlo +3 more
core +2 more sources
Radiochemical ageing of poly(ether ether ketone) [PDF]
European Polymer Journal, 2010 Abstract Thin (60 μm) and thick (250 μm) samples of poly(ether ether ketone) were subjected to radiochemical ageing at 24 kGy h−1 dose rate for doses up to 30.7 MGy at 60 °C in air. FTIR spectrophotometry (hydroxyl and carbonyl build-up), ATR microscopy (oxidation profiles), ammonia gaseous treatment (determination of carbonyl nature), density, DSC ...
Richaud, Emmanuel +5 more
openaire +3 more sources
Molecules, 2016 Poly(ether ether ketone) dendrimers and hyperbranched polymers were prepared from 3,5-dimethoxy-4′-(4-fluorobenzoyl)diphenyl ether and 3,5-dihydroxy-4′-(4-fluorobenzoyl)diphenyl ether through aromatic nucleophilic substitution reactions.
Atsushi Morikawa
doaj +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
Oral and Maxillofacial Surgery Cases, 2023 Trauma to the craniofacial structures can result in both functional and aesthetic defects. Mucosa lines the frontal sinus outflow tract (FSOT) from the frontal sinus to the nasal cavity and any obstruction to the flow of mucus can lead to complications ...
Dana Jackson +2 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
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
Crosslinked SPEEK membranes: Mechanical, thermal, and hydrothermal properties [PDF]
, 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
Evaluation of crystallization kinetics of poly (ether-ketone-ketone) and poly (ether-ether-ketone) by DSC [PDF]
Journal of Aerospace Technology and Management, 2010 The poly (aryl ether ketones) are used as matrices in advanced composites with high performance due to its high thermal stability, excellent environmental performance and superior mechanical properties.
Gibran da Cunha Vasconcelos +4 more
doaj
Polymer 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