Tuning the porosity of asymmetric membranes via simple post-synthesis solvent-treatment for non-aqueous applications

Autor: Marcel Dickmann, Ines Nulens, Hanne Mariën, Ivo F.J. Vankelecom, Yun Li, Rhea Verbeke, Tönjes Koschine, Werner Egger

Publikováno v: Separation and Purification Technology. 217:147-153

Tuning the cohesive and swelling forces in porous membranes by post-synthesis solvent-treatment was already proven to be a successful way to increase the membrane selectivity in aqueous redox flow battery application without sacrificing too much perm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc8310fae7f77a556d29a8e5bfedf087
https://doi.org/10.1016/j.seppur.2019.02.012

Voids and vacancy-type defects in SiO2/GaN structures probed by monoenergetic positron beams

Autor: Wataru Ueno, Takahiro Yamada, Marcel Dickmann, Tönjes Koschine, Werner Egger, Akira Uedono, Takuji Hosoi, Christoph Hugenschmidt, Heiji Watanabe

Publikováno v: Journal of Applied Physics. 127:054503

Voids in SiO2 films deposited on GaN were probed by using monoenergetic positron beams. The films were fabricated on GaN substrates by using plasma-enhanced chemical vapor deposition. The size and density of the voids in the films increased up to an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27d9795e0b1b5aa6596f049f08faa90b
https://doi.org/10.1063/1.5134513

Real-scale chlorination at pH4 of BW30 TFC membranes and their physicochemical characterization

Autor: Anthony Szymczyk, Wim Thielemans, Tanja Stimpel-Lindner, Marcel Dickmann, Tönjes Koschine, Verónica Gómez, Rhea Verbeke, Werner Egger, Samuel Eyley, Ivo F.J. Vankelecom

Publikováno v: Journal of Membrane Science
Journal of Membrane Science, 2018, 551, pp.123-135. ⟨10.1016/j.memsci.2018.01.019⟩
Journal of Membrane Science, Elsevier, 2018, 551, pp.123-135. ⟨10.1016/j.memsci.2018.01.019⟩

Chlorination remains a big hurdle in membrane technology as the most commonly used membranes for water purification consist of a polyamide top-layer, which is not fully resistant towards chlorine-induced oxidation. In this work, DOW FILMTECTM BW30 me

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92b5ae09f5a3506eb3e9a586ef07c94e
https://univ-rennes.hal.science/hal-01737383/document

The effect of low-temperature structural relaxation on free volume and chemical short-range ordering in a Au49Cu26.9Si16.3Ag5.5Pd2.3 bulk metallic glass

Autor: Franz Faupel, Jozef Bednarcik, Isabella Gallino, Jamie J. Kruzic, Tönjes Koschine, Zach Evenson, Klaus Rätzke, Oliver Gross, Ralf Busch, Shuai Wei

Publikováno v: Scripta Materialia. 103:14-17

Structural changes due to low-temperature relaxation in a Au49Cu26.9Si16.3Ag5.5Pd2.3 bulk metallic glass are investigated with a combination of positron annihilation lifetime spectroscopy (PALS) and high-intensity synchrotron X-ray scattering. The fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4aa1a2a08d95229c40d4ef5ba033e29b
https://doi.org/10.1016/j.scriptamat.2015.02.026

Interphases in Polymer Solid-Contacts and Nanocomposites Probed by Positron Annihilation Lifetime Spectroscopy

Autor: Werner Egger, Tönjes Koschine, Lutz Willner, Gerald J. Schneider, Christian Ohrt, Klaus Rätzke, Stephan Harms, Franz Faupel, L. Ravelli

Publikováno v: Soft Materials. 12:S135-S141

At polymer-solid contacts with thermoplastic polymers, the chain characteristics can deviate from the bulk on a length-scale of several nanometer in the so-called interphase. Such an interphase depends on the interaction between respective macromolec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58cc67d3c70ff27bdeeef4102c1cdb90
https://doi.org/10.1080/1539445x.2014.957835