Results 91 to 100 of about 4,819 (221)

Group Vibrational Mode Assignments as a Broadly Applicable Tool for Characterizing Ionomer Membrane Structure as a Function of Degree of Hydration [PDF]

, 2020
Infrared spectra of Nafion, Aquivion, and the 3M membrane were acquired during total dehydration of fully hydrated samples. Fully hydrated exchange sites are in a sulfonate form with a C₃V local symmetry. The mechanical coupling of the exchange site to a
Abu-Hakmeh, Khaldoon, Cruse, Ryan, Dimakis, Nicholas, Doan, Jonathan, Gao, Shuitao, Goddard, William A., III, Gonzalez, Luis, Ingargiola, Matthew, Jang, Seung Soon, Loupe, Neili, Mathiowetz, Kayla, Salas, Isaiah, Schide, Anne, Smotkin, Eugene S.   +13 more
core  

Layer-by-layer surface modification of poly(ether sulfone) membranes using polyelectrolytes and AgCl/TiO2 xerogels [PDF]

, 2015
In this study, the layer-by-layer (LbL) assembly method was employed to modify a commercial polyethersulfone (PES) membrane by successive adsorption of chitosan and alginate as cationic and anionic polyelectrolytes.
Akhavan, Ba, Ba, Ba, Balamurugan, Boerlage, Bohmer, Bowen, Cooper, Cooper, Daniel J. Johnson, Dankovich, de Grooth, Decher, Denuziere, Diagne, Dobmeier, Elimelech, Erol Seker, Guillen-Burrieza, Gupta, Hashino, Hilal, Hodges, Ishigami, Kang, Kawashita, Kochkodan, Kochkodan, Kouwonou, Lajimi, Loher, Lvov, Malaisamy, Mauter, Mello, Nidal Hilal, Papatya Kaner, Qi, Rabea, Rabinovich, Rana, Rinaudo, Rogers, Sacide Alsoy Altinkaya, Suzuki, Tiraferri, Tuncer, Van der Schee, Vrijenhoek, Wang, Yang, Yang, Zhou, Zodrow   +54 more
core   +1 more source

Hyperbranched macromolecules: From synthesis to applications [PDF]

, 2018
Hyperbranched macromolecules (HMs, also called hyperbranched polymers) are highly branched three-dimensional (3D) structures in which all bonds converge to a focal point or core, and which have a multiplicity of reactive chain-ends.
Gao, Hyuk-Jun Noh, In-Yup Jeon, Jong-Beom Baek, Zhou   +4 more
core   +2 more sources

Graphene-based electrochemical system for tritium enrichment

Nuclear Fusion
In this study, a tritium enrichment system in the water phase has been developed based on the combination of a proton exchange membrane (PEM) electrolysis cell and a fuel cell. As the PEM, Nafion ^TM and laboratory-synthesized sulfonated poly(ether ether
R.J. Zabolockis, M. Sondars, G. Vaivars, I. Reinholds, V. Gostilo, V. Malgin, A. Kizilov, A. Lescinskis, A. Felsharuk, L. Avotina, A.S. Teimane, E. Sprugis, E. Pajuste   +12 more
doaj   +1 more source

Thorium Recovery with Crown Ether–Polymer Composite Membranes

Applied Sciences
Thorium is a weak radioactive element, but the control of its concentration in natural aqueous systems is of great interest for health, because it is a toxic heavy metal.
Aurelia Cristina Nechifor, Paul Constantin Albu, Ludmila Motelica, Geani Teodor Man, Alexandra Raluca Grosu, Szidonia-Katalin Tanczos, Vlad-Alexandru Grosu, Virgil Emanuel Marinescu, Gheorghe Nechifor   +8 more
doaj   +1 more source

Self-Healing Sulfonated Poly(ether ether ketone)-Based Polymer Electrolyte Membrane for Direct Methanol Fuel Cells: Effect of Solvent Content. [PDF]

Polymers (Basel), 2023
Tai MH, Thiam HS, Tee SF, Lim YS, Saw LH, Lai SO.   +5 more
europepmc   +1 more source

Sulfonated Poly(Ether-Ether-Ketone) Polymer Membranes for Fuel Cells

Latvian Journal of Physics and Technical Sciences, 2008
Sulfonated Poly(Ether-Ether-Ketone) Polymer Membranes for Fuel CellsIn the work, sulfonated poly(ether-ether-ketone) (SPEEK) ionomers were synthesized using an original (submitted for patent) and simple method. The resulting membranes were tested to determine parameters that are important for the use of this material in fuel cells (water absorption ...
J. Hodakovska, J. Kleperis
openaire   +1 more source

Effects of tin phosphate nanosheet addition on proton-conducting properties of sulfonated poly(ether sulfone) membranes [PDF]

, 2012
Organic/inorganic composite membranes were prepared by dispersing nanosheets of layered tin phosphate hydrate [Sn(HPO4)2·nH2O (SnP)] in sulfonated poly(ether sulfone) (SPES) at SnP contents of 0–40 vol.%.
LICOCCIA, S, Miyayama, M, Sugata, S, Suzuki, S, Traversa, E   +4 more
core   +1 more source

Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application

Membranes, 2019
One of the main problems in direct methanol fuel cell (DMFC) application is methanol crossover. In order to solve the problem, an exfoliated void-free electrospun Sulfonated Poly(Ether Ether Ketone) (SPEEK)/cloisite nanocomposite membrane was developed ...
Nuha Awang, Juhana Jaafar, Ahmad Fauzi Ismail, Mohd Hafiz Dzarfan Othman, Mukhlis A. Rahman   +4 more
doaj   +1 more source

Critical Evaluation of the Methods for the Characterization of the Degree of Sulfonation for Electron Beam Irradiated and Non-Irradiated Sulfonated Poly(ether ether ketone) Membranes. [PDF]

Materials (Basel), 2023
Pakalniete LD, Maskova E, Zabolockis RJ, Avotina L, Sprugis E, Reinholds I, Rzepna M, Vaivars G, Pajuste E.   +8 more
europepmc   +1 more source