Influence of porosity and microstructure on compression behavior of methacrylate polymers in flow-through applications
ID Poljanec, Nikola (Author), ID Mravljak, Rok (Author), ID Podgornik, Aleš (Author)

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Mechanical properties of a material play a pivotal role in its performance when such porous material is used in a flow-through mode. This study delves into the effect of porosity and microstructure on the compressibility of methacrylate polymer, focusing on two distinct microstructures: cauliflower and high internal phase emulsion. Samples with various porosities yet identical chemical composition were prepared and their Young’s modulus was measured. The effect of porosity on Young’s modulus was described by an exponential law model with the cauliflower microstructure exhibiting an exponent of 3.61, while the high internal phase emulsion of only 1.86. A mathematical analysis of the compression caused by a liquid flow unveiled significant disparities in the porosity threshold where minimal compression is observed, being around 0.45 for the cauliflower while there is monotone decrease in compression with porosity increase for the high internal phase emulsion microstructure. Evaluating exponent integer values between 1 and 5 over entire porosity range reveals that the porosity where the minimal compression occurs increases with a decrease in exponent value, being approximately 0.33 for n = 5, 0.4 for n = 4, 0.55 for n = 3, 0.65 for n = 2 while no minimum occurs for n = 1. These findings indicate that lower exponent value results in lower compression under identical experimental conditions.

Keywords:compression, mechanical properties, microstructure, porosity, Young's modulus
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Publication status:Published
Publication version:Version of Record
Number of pages:11 str.
Numbering:Vol. 47, iss. 9/10, art. 2300767
PID:20.500.12556/RUL-158295 This link opens in a new window
ISSN on article:1615-9314
DOI:10.1002/jssc.202300767 This link opens in a new window
COBISS.SI-ID:197425411 This link opens in a new window
Publication date in RUL:03.06.2024
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Record is a part of a journal

Title:Journal of separation science
Shortened title:J. sep. sci.
COBISS.SI-ID:2871834 This link opens in a new window


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Keywords:kompresija, mehanske lastnosti, mikrostruktura, poroznost, Youngov modul


Funder:ARRS - Slovenian Research Agency
Project number:J2-50048
Name:Priprava kristaliziranih zvitih in dvojčičnih morfologij iz superkritičnih fluidov za katalizo in separacije

Funder:ARRS - Slovenian Research Agency
Project number:P1-0153
Name:Raziskave in razvoj analiznih metod in postopkov

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