| Title: | Thermal energy storage and leakage prevention of phase change materials via one-step impregnation and in-situ polymerization process in hardwood |
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| Authors: | ID Grzybek, Jakub (Author)
ID Zsembinszki, Gabriel (Author)
ID Borri, Emiliano (Author)
ID Meindl, Alina (Author)
ID Paschová, Zuzana (Author)
ID Petutschnigg, Alexander (Author)
ID Cabeza, Luisa F. (Author)
ID Schnabel, Thomas (Author) |
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| Files: |  RAZ_Grzybek_Jakub_2026.pdf (12,99 MB)
MD5: BCB71D9CCBB751C68AD901BD31D2675B
 https://www.sciencedirect.com/science/article/pii/S0360544225055173
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | IAM - Andrej Marušič Institute
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| Abstract: | Wood is a versatile material widely used in building construction, but its low thermal mass limits its ability to regulate indoor temperatures and mitigate thermal load peaks. Phase change materials are effective at storing thermal energy, but when impregnated into wood, they leak out, compromising performance and restricting their use in buildings. This study introduces a novel one-step impregnation process combined with in-situ polymerization using furfuryl alcohol and a capric-stearic acid phase change material mixture to create a sustainable material for thermal energy storage. Various formulations were tested on European beech (Fagus sylvatica L.) to evaluate effectiveness of the approach. The results confirm that this method successfully prevents phase change material leakage. Moreover, differential scanning calorimetry and nuclear magnetic resonance verified that phase change materials retain their thermal energy storage functionality, with no chemical cross-linking between the phase change materials and furfuryl alcohol. The treated wood showed up to 185 % higher thermal energy storage capacity, enhanced dimensional stability (anti-swelling efficiency up to 87 %), and 28 % higher compressive strength than untreated wood. It is a step towards sustainable, multifunctional, leakage-free, enhanced mechanical properties, improved dimensional stability wood for thermal energy storage for building applications, with potential for further optimisation and characterisation. |
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| Keywords: | bio-based materials, fatty acid, furfuryl alcohol, sustainable building materials, wood modification, phase change materials |
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| Publication version: | Version of Record |
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| Publication date: | 04.06.2026 |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 1-14 |
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| Numbering: | Vol. 344, [article no.] 139874 |
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| PID: | 20.500.12556/RUP-22432  |
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| UDC: | 69 |
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| ISSN on article: | 1873-6785 |
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| DOI: | 10.1016/j.energy.2025.139874 |
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| COBISS.SI-ID: | 264067843 |
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| Publication date in RUP: | 09.01.2026 |
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| Views: | 122 |
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| Downloads: | 3 |
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