An Improved Apparatus for Vapour-Liquid Equilibria Measurement in Polymer + Solvent Systems at Higher Temperatures: a Study of the Water + Poly(ethylene glycol) System.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00479630" target="_blank" >RIV/67985858:_____/17:00479630 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.fluid.2017.09.013" target="_blank" >http://dx.doi.org/10.1016/j.fluid.2017.09.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fluid.2017.09.013" target="_blank" >10.1016/j.fluid.2017.09.013</a>
Alternative languages
Result language
angličtina
Original language name
An Improved Apparatus for Vapour-Liquid Equilibria Measurement in Polymer + Solvent Systems at Higher Temperatures: a Study of the Water + Poly(ethylene glycol) System.
Original language description
Recently we designed an apparatus for total pressure measurement in binary polymer + solvent systems. Accurate as it is, the apparatus is limited by its direct capacitance pressure sensor that can operate only at 318.15 K. In this study we tested a new setup that overcomes this limitation with a pressure transducer (MKS Baratron), which can be heated up to 430 K. The main improvement is that the new setup has eliminated solvent vapour condensation in the pressure measurement unit. Other parts of the equipment can easily be kept at temperatures higher than the system temperature with heating tapes. Unlike the ebulliometric method, which is limited by problems arising from the boiling of viscous mixtures, now we can study solutions with higher polymer concentrations. We tested the new setup by measuring the total pressure of binary poly(ethylene glycol) + water mixtures at six isotherms in the (308.15–343.15) K range. Additionally we determined new data for three isotherms (343.15, 353.15, and 363.15) K using ebulliometric method. We then correlated our measurements with both methods using the UNIQUAC–free volume model and compared them with available published data for isotherms 313.15 K and 333.15 K. The agreement with our static measurement results was excellent.
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
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA15-19542S" target="_blank" >GA15-19542S: Thermodynamics of polymer solutions: experiments meet theory and vice versa</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fluid Phase Equilibria
ISSN
0378-3812
e-ISSN
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Volume of the periodical
454
Issue of the periodical within the volume
25 DEC
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
5
Pages from-to
111-115
UT code for WoS article
000414879000011
EID of the result in the Scopus database
2-s2.0-85030125753