Naslov
Experimental determination of total pressure for the binary water and poly(ethylene glycol) mixtures

Autori
Pavlíček, Jan ; Bogdanić, Grozdana ; Wichterle Ivan ; Izák, Pavel

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
23rd International Congress of Chemical and Process Engineering CHISA 2018 - Program / Wichterle, Ivan - Prag : Czech Chemical Engineering Society, 2018, 65-65

Skup
23th International Congress of Chemical and Process Engineering (CHISA 2018)

Mjesto i datum
Prag, Češka Republika, 26.08.2018. - 29.08.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
: total pressure measurement ; polymer–solvent system ; vapour–liquid equilibria

Sažetak
The total pressure of the systems containing water and three different poly(ethylene glycol)s with nominal molecular weights of 1000, 3000 and 6000 g mol-1 was measured isothermally at 303.15, 308.15, 313.15, 323.15, 333.15, 343.15, 353.15 and 363.15 K, using the improved static apparatus as described in [1] and ebulliometrically [2]. The data obtained cover the concentration range up to 50 weight % of the polymer. The 343.15 K isotherm was measured by both experimental methods, and both showed good continuity and performance. The vapour pressure data are expressed in terms of water activity, a1 = P1/P1o, where P1 is partial pressure and P1o is vapour pressure of pure water. The static and ebulliometric data agree well qualitatively, but quantitatively the static activities are higher about 0.25% in average, what is acceptable regarding the accuracy of measurements. The data were successfully correlated with the UNIQUAC-FV model described in [1]. Keywords: total pressure measurement ; polymer–solvent system ; vapour–liquid equilibria References [1] J. Pavlíček, G. Bogdanić, I. Wichterle, Fluid Phase Equilib. 454 (2017), 111–115. [2] J. Pavlíček, G. Bogdanić, I. Wichterle, Chem. Biochem. Eng. Q. 28 (2014) 447–450. Acknowledgment This study was partly supported by the Czech Science Foundation (Grant Nos. 15-19542S and 17-05421S).

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

Napomena
I. Wichterle (Chairperson of Scientific Committee) G. Bogdanić (Scientific Committee)

POVEZANOST RADA