Effect of alternation of polyamide selective layers in the formation and performance of thin-film composite membranes
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Effect of alternation of polyamide selective layers in the formation and performance of thin-film composite membranes
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Desalination and Water Treatment
ISSN
1944-3994
e-ISSN
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Volume of the periodical
57
Issue of the periodical within the volume
19
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
8720-8729
UT code for WoS article
000370064500013
EID of the result in the Scopus database
2-s2.0-84957844761