Sorption, swelling and plasticization of PIM-1 in methanol-dimethyl carbonate vapour mixtures
The result's identifiers
Result code in 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>
Alternative codes found
RIV/60461373:22340/21:43920844
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Sorption, swelling and plasticization of PIM-1 in methanol-dimethyl carbonate vapour mixtures
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA18-08389S" target="_blank" >GA18-08389S: Study of plasticization of polymeric membranes and thermodynamics of multicomponent sorption for the development of effective membrane separations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer
ISSN
0032-3861
e-ISSN
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Volume of the periodical
218
Issue of the periodical within the volume
18 March 2021
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
123509
UT code for WoS article
000632417800001
EID of the result in the Scopus database
2-s2.0-85101342545