Surface Tension of Supercooled Water: Inflection Point-Free Course down to 250 K Confirmed Using a Horizontal Capillary Tube

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00481327" target="_blank" >RIV/61388998:_____/17:00481327 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/17:00331811

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jced.7b00519" target="_blank" >http://dx.doi.org/10.1021/acs.jced.7b00519</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jced.7b00519" target="_blank" >10.1021/acs.jced.7b00519</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface Tension of Supercooled Water: Inflection Point-Free Course down to 250 K Confirmed Using a Horizontal Capillary Tube

Popis výsledku v původním jazyce

The temperature course of the surface tension of supercooled water was suspected to exhibit an anomalous feature – the so called second inflection point (SIP). Besides some theoretical and molecular simulation studies, this hypothesis was primarily supported by experimental data by P.T. Hacker (1951). Recently, the present group performed accurate surface tension measurements down to –26 °C using a modified capillary rise technique which, in contrast to Hacker’s data, showed no SIP anomaly. In order to confirm that the qualitatively different observations are not related to some fundamental phenomenon, we developed an experimental device employing basically the same method as Hacker with a horizontal capillary tube. New experimental data for the surface tension of supercooled water measured with the horizontal capillary setup down to –23 °C are presented in this study. The new data show a very good agreement with the previous capillary rise measurements. It was confirmed that the temperature dependence of the surface tension is free of SIP in a temperature range from –23 °C to 23 °C and can be well represented by the IAPWS standard extrapolated below 0.01 °C. However, a small systematic deviation from the IAPWS correlation can be seen at temperatures below –15 °C.

Název v anglickém jazyce

Surface Tension of Supercooled Water: Inflection Point-Free Course down to 250 K Confirmed Using a Horizontal Capillary Tube

Popis výsledku anglicky

The temperature course of the surface tension of supercooled water was suspected to exhibit an anomalous feature – the so called second inflection point (SIP). Besides some theoretical and molecular simulation studies, this hypothesis was primarily supported by experimental data by P.T. Hacker (1951). Recently, the present group performed accurate surface tension measurements down to –26 °C using a modified capillary rise technique which, in contrast to Hacker’s data, showed no SIP anomaly. In order to confirm that the qualitatively different observations are not related to some fundamental phenomenon, we developed an experimental device employing basically the same method as Hacker with a horizontal capillary tube. New experimental data for the surface tension of supercooled water measured with the horizontal capillary setup down to –23 °C are presented in this study. The new data show a very good agreement with the previous capillary rise measurements. It was confirmed that the temperature dependence of the surface tension is free of SIP in a temperature range from –23 °C to 23 °C and can be well represented by the IAPWS standard extrapolated below 0.01 °C. However, a small systematic deviation from the IAPWS correlation can be seen at temperatures below –15 °C.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GJ15-07129Y" target="_blank" >GJ15-07129Y: Povrchové napětí vody a vodných směsí v rovnovážném a metastabilním stavu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Chemical and Engineering Data

ISSN

0021-9568

e-ISSN

—

Svazek periodika

62

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

3823-3832

Kód UT WoS článku

000415140900020

EID výsledku v databázi Scopus

2-s2.0-85033594551