Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation
Recently, several chemical and physical treatments were developed to improve different properties of wood. Such treatments are applicable to many types of cellulose-based materials. Densification leads the group in terms of mechanical results and comprises a chemical treatment followed by a thermo-c...
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MDPI AG
2020-03-01
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| 叢編: | Nanomaterials |
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| 在線閱讀: | https://www.mdpi.com/2079-4991/10/3/478 |
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| author | David Novel Simone Ghio Andrea Gaiardo Antonino Picciotto Vincenzo Guidi Giorgio Speranza Maurizio Boscardin Pierluigi Bellutti Nicola M. Pugno |
| author_facet | David Novel Simone Ghio Andrea Gaiardo Antonino Picciotto Vincenzo Guidi Giorgio Speranza Maurizio Boscardin Pierluigi Bellutti Nicola M. Pugno |
| author_sort | David Novel |
| collection | DOAJ |
| description | Recently, several chemical and physical treatments were developed to improve different properties of wood. Such treatments are applicable to many types of cellulose-based materials. Densification leads the group in terms of mechanical results and comprises a chemical treatment followed by a thermo-compression stage. First, chemicals selectively etch the matrix of lignin and hemicellulose. Then, thermo-compression increases the packing density of cellulose microfibrils boosting mechanical performance. In this paper, in comparison with the state-of-the-art for wood treatments we introduce an additional nano-reinforcemeent on densified giant reed to further improve the mechanical performance. The modified nanocomposite materials are stiffer, stronger, tougher and show higher fire resistance. After the addition of nanoparticles, no relevant structural modification is induced as they are located in the gaps between cellulose microfibrils. Their peculiar positioning could increase the interfacial adhesion energy and improve the stress transfer between cellulose microfibrils. The presented process stands as a viable solution to introduce nanoparticles as new functionalities into cellulose-based natural materials. |
| first_indexed | 2024-12-13T05:05:21Z |
| format | Article |
| id | doaj.art-b5f7a44d9c444e87bae92f95c24f4adb |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-13T05:05:21Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b5f7a44d9c444e87bae92f95c24f4adb2022-12-21T23:58:40ZengMDPI AGNanomaterials2079-49912020-03-0110347810.3390/nano10030478nano10030478Strengthening of Wood-Like Materials via Densification and Nanoparticle IntercalationDavid Novel0Simone Ghio1Andrea Gaiardo2Antonino Picciotto3Vincenzo Guidi4Giorgio Speranza5Maurizio Boscardin6Pierluigi Bellutti7Nicola M. Pugno8Laboratory of Bio-Inspired, Bionic, Nano, Meta Materials & Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, I-38123 Trento, ItalyLaboratory of Bio-Inspired, Bionic, Nano, Meta Materials & Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, I-38123 Trento, ItalyCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, I-38123 Trento, ItalyCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, I-38123 Trento, ItalyDepartment of Physics and Earth Science, University of Ferrara, via Saragat 1/c, I-44122 Ferrara, ItalyCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, I-38123 Trento, ItalyCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, I-38123 Trento, ItalyCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, I-38123 Trento, ItalyLaboratory of Bio-Inspired, Bionic, Nano, Meta Materials & Mechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, I-38123 Trento, ItalyRecently, several chemical and physical treatments were developed to improve different properties of wood. Such treatments are applicable to many types of cellulose-based materials. Densification leads the group in terms of mechanical results and comprises a chemical treatment followed by a thermo-compression stage. First, chemicals selectively etch the matrix of lignin and hemicellulose. Then, thermo-compression increases the packing density of cellulose microfibrils boosting mechanical performance. In this paper, in comparison with the state-of-the-art for wood treatments we introduce an additional nano-reinforcemeent on densified giant reed to further improve the mechanical performance. The modified nanocomposite materials are stiffer, stronger, tougher and show higher fire resistance. After the addition of nanoparticles, no relevant structural modification is induced as they are located in the gaps between cellulose microfibrils. Their peculiar positioning could increase the interfacial adhesion energy and improve the stress transfer between cellulose microfibrils. The presented process stands as a viable solution to introduce nanoparticles as new functionalities into cellulose-based natural materials.https://www.mdpi.com/2079-4991/10/3/478cellulose-based nanocompositesnanoparticlesdensificationalkaline treatmentgiant reedstructural modifications of natural materials |
| spellingShingle | David Novel Simone Ghio Andrea Gaiardo Antonino Picciotto Vincenzo Guidi Giorgio Speranza Maurizio Boscardin Pierluigi Bellutti Nicola M. Pugno Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation Nanomaterials cellulose-based nanocomposites nanoparticles densification alkaline treatment giant reed structural modifications of natural materials |
| title | Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation |
| title_full | Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation |
| title_fullStr | Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation |
| title_full_unstemmed | Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation |
| title_short | Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation |
| title_sort | strengthening of wood like materials via densification and nanoparticle intercalation |
| topic | cellulose-based nanocomposites nanoparticles densification alkaline treatment giant reed structural modifications of natural materials |
| url | https://www.mdpi.com/2079-4991/10/3/478 |
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