Stiffening and softening of freshly prepared and aged CTA, PTMSP, and PIM‑1 films exposed to volatile compounds
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43927555" target="_blank" >RIV/60461373:22310/24:43927555 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/24:43927555
Result on the web
<a href="https://doi.org/10.1002/pol.20230776" target="_blank" >https://doi.org/10.1002/pol.20230776</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pol.20230776" target="_blank" >10.1002/pol.20230776</a>
Alternative languages
Result language
angličtina
Original language name
Stiffening and softening of freshly prepared and aged CTA, PTMSP, and PIM‑1 films exposed to volatile compounds
Original language description
Glassy polymers stiffen or soften when exposed to volatile compounds, depending on the specific combination of polymer-compound and the specimen history. Relevant to the long-term applicability of the separation membranes, three common membrane glassy polymers are studied in this work. Freshly prepared and 2-years aged films from cellulose triacetate (CTA), poly[1 (trimethylsilyl) 1 propyne] (PTMSP), and the archetypal polymer of intrinsic microporosity (PIM 1) were tested using isothermal Dynamic Mechanical Analysis (DMA) at varied vapor activity. Vapors of organic compounds, in which the polymers do and do not dissolve in the liquid phase (solvents and nonsolvents), were studied at 40 °C, namely: dichloromethane (DCM, solvent), p xylene (solvent for PTMSP and PIM 1), and methanol (nonsolvent). Functional groups of the mer units sensitive to the dissolution were identified using Raman spectroscopy. All aged films were stiffer than the freshly prepared ones. Stiffening prevailed for most freshly prepared film-vapor pairs at low vapor saturations (activity < ≈0.4), except CTA and PIM 1 in nonsolvent methanol vapors. Softening prevailed for the aged films and higher vapor saturations (activity > ≈0.6). Vapors of the solvents and nonsolvents did not show the expectable prevalence to softening and stiffening, respectively. Physical aging influenced the stiffening and softening of polymer glasses expectably.
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF POLYMER SCIENCE
ISSN
2642-4150
e-ISSN
2642-4169
Volume of the periodical
62
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1781-1788
UT code for WoS article
001142648700001
EID of the result in the Scopus database
2-s2.0-85182247064