Sorption, swelling and plasticization of PIM-1 in methanol-dimethyl carbonate vapour mixtures
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43920844" target="_blank" >RIV/60461373:22310/21:43920844 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22340/21:43920844
Výsledek na webu
<a href="https://doi.org/10.1016/j.polymer.2021.123509" target="_blank" >https://doi.org/10.1016/j.polymer.2021.123509</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymer.2021.123509" target="_blank" >10.1016/j.polymer.2021.123509</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Sorption, swelling and plasticization of PIM-1 in methanol-dimethyl carbonate vapour mixtures
Popis výsledku v původním jazyce
Membranes from PIM-1 represent a promising tool for the efficient recovery of organic components from their vapour mixtures with water or alcohols. To understand the phenomena governing the separation, sorption, swelling and mechanical characteristics were systematically studied for thick PIM-1 films exposed to vapour mixtures of methanol and dimethyl carbonate (DMC). The studied binary vapour mixtures contained 30, 55, 82 and 90 mol.% of methanol and reached 28, 49 and 63 % of the dew point pressure at 40 °C. The separation factor for sorption of vapour mixtures ranged 4.0-7.5, peaked for the azeotropic mixture (82 mol% of methanol) at low saturation (28 % of the dew point pressure), and was significantly contributed by competitive sorption. Furthermore, the tested PIM‑1 films exhibited anomalously low volume swelling while their storage modulus remained comparable to that of the pure polymer until exposed to the highly saturated vapours (63 % of the dew point pressure). Raman spectroscopy analysis of PIM-1 swollen by liquid methanol and DMC revealed the pronounced frequency shifts of the C-C vibrations in the aromatic rings and the C‑H vibrations in the pentacyclic units. These centres presumably triggered the relaxation of the polymer backbone occurring at high saturations of the vapours. In conclusion, PIM-1 remains highly rigid and selective to DMC in wide ranges of saturation and composition for vapour mixtures of methanol with DMC and is a candidate for effective inversely selective vapour separation membranes.
Název v anglickém jazyce
Sorption, swelling and plasticization of PIM-1 in methanol-dimethyl carbonate vapour mixtures
Popis výsledku anglicky
Membranes from PIM-1 represent a promising tool for the efficient recovery of organic components from their vapour mixtures with water or alcohols. To understand the phenomena governing the separation, sorption, swelling and mechanical characteristics were systematically studied for thick PIM-1 films exposed to vapour mixtures of methanol and dimethyl carbonate (DMC). The studied binary vapour mixtures contained 30, 55, 82 and 90 mol.% of methanol and reached 28, 49 and 63 % of the dew point pressure at 40 °C. The separation factor for sorption of vapour mixtures ranged 4.0-7.5, peaked for the azeotropic mixture (82 mol% of methanol) at low saturation (28 % of the dew point pressure), and was significantly contributed by competitive sorption. Furthermore, the tested PIM‑1 films exhibited anomalously low volume swelling while their storage modulus remained comparable to that of the pure polymer until exposed to the highly saturated vapours (63 % of the dew point pressure). Raman spectroscopy analysis of PIM-1 swollen by liquid methanol and DMC revealed the pronounced frequency shifts of the C-C vibrations in the aromatic rings and the C‑H vibrations in the pentacyclic units. These centres presumably triggered the relaxation of the polymer backbone occurring at high saturations of the vapours. In conclusion, PIM-1 remains highly rigid and selective to DMC in wide ranges of saturation and composition for vapour mixtures of methanol with DMC and is a candidate for effective inversely selective vapour separation membranes.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10404 - Polymer science
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-08389S" target="_blank" >GA18-08389S: Studium plastifikace polymerních membrán a termodynamiky multikomponentní sorpce pro zefektivnění membránových separačních procesů</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Polymer
ISSN
0032-3861
e-ISSN
—
Svazek periodika
218
Číslo periodika v rámci svazku
18 March 2021
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
8
Strana od-do
123509
Kód UT WoS článku
000632417800001
EID výsledku v databázi Scopus
2-s2.0-85101342545