Unveiling the apparent density of swollen PDMS in hydrocarbons – A distinction between dimensional-based and volume-additivity methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43931440" target="_blank" >RIV/60461373:22340/25:43931440 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S016773222402659X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S016773222402659X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2024.126598" target="_blank" >10.1016/j.molliq.2024.126598</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unveiling the apparent density of swollen PDMS in hydrocarbons – A distinction between dimensional-based and volume-additivity methods

Popis výsledku v původním jazyce

This article reports the swelling-induced effect on the density, mass, area, and thickness of the polydimethylsiloxane (PDMS) membrane in C6–C12 linear alkanes. Their time dependence (up to 500 min) was determined at 20 °C and atmospheric pressure. From the combination of areal and thickness data, the experimental PDMS volumes of the swollen polymer were calculated, and the time dependence of the apparent density of the swollen membrane (i.e. its mass divided by its real volume) was revealed. The equilibrium apparent density of the swollen PDMS increased with the increasing number of C-atoms of liquid alkanes and liquid density. For higher alkanes (C number &gt; 10), the calculated equilibrium apparent density of the swollen polymer was thus higher than that of the dry polymer. The dimensional-based PDMS volumes of the swollen polymer were compared with those calculated by the volume-additivity rules. For each C6–C12 linear alkane, the volume-additivity method overestimated the swollen polymer volumes compared to the experimentally determined ones. Such a finding indicates the non-ideal PDMS swelling character, which is not solely additive due to the force interactions between the polymer chains and solvent molecules and moving of polymer chains apart (free volume increases). © 2024 Elsevier B.V.

Název v anglickém jazyce

Unveiling the apparent density of swollen PDMS in hydrocarbons – A distinction between dimensional-based and volume-additivity methods

Popis výsledku anglicky

This article reports the swelling-induced effect on the density, mass, area, and thickness of the polydimethylsiloxane (PDMS) membrane in C6–C12 linear alkanes. Their time dependence (up to 500 min) was determined at 20 °C and atmospheric pressure. From the combination of areal and thickness data, the experimental PDMS volumes of the swollen polymer were calculated, and the time dependence of the apparent density of the swollen membrane (i.e. its mass divided by its real volume) was revealed. The equilibrium apparent density of the swollen PDMS increased with the increasing number of C-atoms of liquid alkanes and liquid density. For higher alkanes (C number &gt; 10), the calculated equilibrium apparent density of the swollen polymer was thus higher than that of the dry polymer. The dimensional-based PDMS volumes of the swollen polymer were compared with those calculated by the volume-additivity rules. For each C6–C12 linear alkane, the volume-additivity method overestimated the swollen polymer volumes compared to the experimentally determined ones. Such a finding indicates the non-ideal PDMS swelling character, which is not solely additive due to the force interactions between the polymer chains and solvent molecules and moving of polymer chains apart (free volume increases). © 2024 Elsevier B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF MOLECULAR LIQUIDS

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

417

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

126598

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85210532865