Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance
Ag-TiO2/EVA composites were synthesized using silver-loaded nano TiO2 (Ag-TiO2) and ethylene-vinyl acetate (EVA) emulsion as raw materials, aiming to develop functional materials with antibacterial, anti-mold, and anti-discoloration in properties for wood protection. The study systematically evaluat...
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North Carolina State University
2025-07-01
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| Online Access: | https://ojs.bioresources.com/index.php/BRJ/article/view/24597 |
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| author | Ting Liu Yaoxing Sun Honggang Zhao Huachun Qi Jiuyin Pang |
| author_facet | Ting Liu Yaoxing Sun Honggang Zhao Huachun Qi Jiuyin Pang |
| author_sort | Ting Liu |
| collection | DOAJ |
| description | Ag-TiO2/EVA composites were synthesized using silver-loaded nano TiO2 (Ag-TiO2) and ethylene-vinyl acetate (EVA) emulsion as raw materials, aiming to develop functional materials with antibacterial, anti-mold, and anti-discoloration in properties for wood protection. The study systematically evaluated the composites’ inhibition efficacy against discoloration fungi and molds, long-term antibacterial performance, as well as the tensile strength and water vapor transmission rate of composite films. Experimental results demonstrated that 100% inhibition efficacy against Botryodiplodia theobromae and Aspergillus niger was achieved under two optimal conditions: film thickness of 0.12 to 0.15 mm with Ag-TiO2 loading ≥20%, or film thickness of 0.18 to 0.21 mm with Ag-TiO2 loading ≥15%. Samples with 10%, 15%, and 20% Ag-TiO2 loading exhibited >99.99% antibacterial rates against both Escherichia coli and Staphylococcus aureus. Notably, the 20% Ag-TiO2 sample retained high antibacterial values of 93.0% and 91.7% against these bacteria after 15 days of storage. Mechanical and barrier property tests revealed that compared to the control, the tensile strength of composite films increased by 19.8%, 24.6%, and 29.3% at Ag-TiO2 loadings of 10%, 15%, and 20% respectively, while water vapor transmission rates decreased by 48.6%, 52.9%, and 60.6%. These findings collectively confirm that Ag-TiO2/EVA composites possess excellent bactericidal effects and significant wood anti-mold/anti-discoloration functionality. |
| format | Article |
| id | doaj-art-d0aeb37e8c08489c938fc0933d937f5a |
| institution | Kabale University |
| issn | 1930-2126 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj-art-d0aeb37e8c08489c938fc0933d937f5a2025-08-20T03:38:39ZengNorth Carolina State UniversityBioResources1930-21262025-07-01203719472103400Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration PerformanceTing Liu0Yaoxing Sun1Honggang Zhao2Huachun Qi3Jiuyin Pang4Key Laboratory of Wooden Materials Science and Engineering of Jilin Province, School of Material Science and Engineering, Beihua University, Jilin 132013, ChinaKey Laboratory of Wooden Materials Science and Engineering of Jilin Province, School of Material Science and Engineering, Beihua University, Jilin 132013, ChinaKey Laboratory of Wooden Materials Science and Engineering of Jilin Province, School of Material Science and Engineering, Beihua University, Jilin 132013, ChinaKey Laboratory of Wooden Materials Science and Engineering of Jilin Province, School of Material Science and Engineering, Beihua University, Jilin 132013, ChinaKey Laboratory of Wooden Materials Science and Engineering of Jilin Province, School of Material Science and Engineering, Beihua University, Jilin 132013, ChinaAg-TiO2/EVA composites were synthesized using silver-loaded nano TiO2 (Ag-TiO2) and ethylene-vinyl acetate (EVA) emulsion as raw materials, aiming to develop functional materials with antibacterial, anti-mold, and anti-discoloration in properties for wood protection. The study systematically evaluated the composites’ inhibition efficacy against discoloration fungi and molds, long-term antibacterial performance, as well as the tensile strength and water vapor transmission rate of composite films. Experimental results demonstrated that 100% inhibition efficacy against Botryodiplodia theobromae and Aspergillus niger was achieved under two optimal conditions: film thickness of 0.12 to 0.15 mm with Ag-TiO2 loading ≥20%, or film thickness of 0.18 to 0.21 mm with Ag-TiO2 loading ≥15%. Samples with 10%, 15%, and 20% Ag-TiO2 loading exhibited >99.99% antibacterial rates against both Escherichia coli and Staphylococcus aureus. Notably, the 20% Ag-TiO2 sample retained high antibacterial values of 93.0% and 91.7% against these bacteria after 15 days of storage. Mechanical and barrier property tests revealed that compared to the control, the tensile strength of composite films increased by 19.8%, 24.6%, and 29.3% at Ag-TiO2 loadings of 10%, 15%, and 20% respectively, while water vapor transmission rates decreased by 48.6%, 52.9%, and 60.6%. These findings collectively confirm that Ag-TiO2/EVA composites possess excellent bactericidal effects and significant wood anti-mold/anti-discoloration functionality.https://ojs.bioresources.com/index.php/BRJ/article/view/24597composite materialwood mold resistanceantibacterialeva |
| spellingShingle | Ting Liu Yaoxing Sun Honggang Zhao Huachun Qi Jiuyin Pang Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance BioResources composite material wood mold resistance antibacterial eva |
| title | Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance |
| title_full | Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance |
| title_fullStr | Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance |
| title_full_unstemmed | Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance |
| title_short | Ag-TiO2/EVA Composites for Wood Preservation: Antibacterial, Anti-mold, and Anti-Discoloration Performance |
| title_sort | ag tio2 eva composites for wood preservation antibacterial anti mold and anti discoloration performance |
| topic | composite material wood mold resistance antibacterial eva |
| url | https://ojs.bioresources.com/index.php/BRJ/article/view/24597 |
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