Influence of porosity and microstructure on compression behavior of methacrylate polymers in flow-through applications

Poljanec, Nikola (author), Mravljak, Rok (author), Podgornik, Aleš (author)

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.

• Language: English
• 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
• Year: 2024
• Number of pages: 11 str.
• Numbering: Vol. 47, iss. 9/10, art. 2300767
• PID: 20.500.12556/RUL-158295
• UDC: 620.1
• ISSN on article: 1615-9314
• DOI: 10.1002/jssc.202300767
• COBISS.SI-ID: 197425411
• Publication date in RUL: 03.06.2024

Record is a part of a journal

• Title: Journal of separation science
• Shortened title: J. sep. sci.
• Publisher: Wiley
• ISSN: 1615-9314
• COBISS.SI-ID: 2871834

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• 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

• Language: Slovenian
• Keywords: kompresija, mehanske lastnosti, mikrostruktura, poroznost, Youngov modul

Projects

• 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