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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

JOURNAL OF MOLECULAR LIQUIDS

ISSN

0167-7322

e-ISSN

1873-3166

Volume of the periodical

417

Issue of the periodical within the volume

January

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

126598

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85210532865