Effect of alternation of polyamide selective layers in the formation and performance of thin-film composite membranes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F16%3A43928651" target="_blank" >RIV/49777513:23640/16:43928651 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1080/19443994.2015.1026279" target="_blank" >http://dx.doi.org/10.1080/19443994.2015.1026279</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/19443994.2015.1026279" target="_blank" >10.1080/19443994.2015.1026279</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of alternation of polyamide selective layers in the formation and performance of thin-film composite membranes
Popis výsledku v původním jazyce
Polyamide thin-film composite membranes were prepared on a reinforced microporous polyethersulfone (PES) support by in situ interfacial polycondensation of amic acid diamines (AADs) with 1,3,5-benzenetricarbonyl trichloride and subsequent curing. Water soluble AADs were synthesized by reacting trimellitic anhydride chloride and cyclic/aromatic diamines in dimethylformamide at 5-10 degrees C. Polyamide ultra-thin barrier layer containing different structural modifications were isolated by dissolving the matrix PES support in dichloromethane and characterized for IR, NMR, and DSC techniques. Morphology of membranes by scanning electron microscopy showed the appearance of honeycomb-like structure on the polyamide skin surface and the cross section displayed the presence of nodular structure which arises from the dense polyamide skin. The performances of these membranes were measured by passing the feed solutions containing 2,000ppm of NaCl and Na2SO4 in a reverse osmosis test kit. Membranes exhibited very broad range of separations for NaCl (35-85%) and Na2SO4 (40-89%) depending on the chemical nature of the AADs. The glass transition temperature (T-g) of composite membranes with aromatic diamine structures were >220 degrees C, indicating the higher stiffness nature of the polymer chain due to the presence of fully aromatic structural units.
Název v anglickém jazyce
Effect of alternation of polyamide selective layers in the formation and performance of thin-film composite membranes
Popis výsledku anglicky
Polyamide thin-film composite membranes were prepared on a reinforced microporous polyethersulfone (PES) support by in situ interfacial polycondensation of amic acid diamines (AADs) with 1,3,5-benzenetricarbonyl trichloride and subsequent curing. Water soluble AADs were synthesized by reacting trimellitic anhydride chloride and cyclic/aromatic diamines in dimethylformamide at 5-10 degrees C. Polyamide ultra-thin barrier layer containing different structural modifications were isolated by dissolving the matrix PES support in dichloromethane and characterized for IR, NMR, and DSC techniques. Morphology of membranes by scanning electron microscopy showed the appearance of honeycomb-like structure on the polyamide skin surface and the cross section displayed the presence of nodular structure which arises from the dense polyamide skin. The performances of these membranes were measured by passing the feed solutions containing 2,000ppm of NaCl and Na2SO4 in a reverse osmosis test kit. Membranes exhibited very broad range of separations for NaCl (35-85%) and Na2SO4 (40-89%) depending on the chemical nature of the AADs. The glass transition temperature (T-g) of composite membranes with aromatic diamine structures were >220 degrees C, indicating the higher stiffness nature of the polymer chain due to the presence of fully aromatic structural units.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CD - Makromolekulární chemie
OECD FORD obor
—
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Desalination and Water Treatment
ISSN
1944-3994
e-ISSN
—
Svazek periodika
57
Číslo periodika v rámci svazku
19
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
10
Strana od-do
8720-8729
Kód UT WoS článku
000370064500013
EID výsledku v databázi Scopus
2-s2.0-84957844761