Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment
The present study aimed to evaluate the effect of citric acid on the properties of solid pine wood, which were submitted to thermomechanical treatment. A preliminary test was performed in a previous study to evaluate the influence of different temperatures of pressing and concentrations of citric ac...
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MDPI AG
2023-09-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/14/9/1839 |
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| author | Matheus Crisostomo Cláudio Del Menezzi Holger Militz Katarzyna Kurkowiak Aaron Mayer Luisa Carvalho Jorge Martins |
| author_facet | Matheus Crisostomo Cláudio Del Menezzi Holger Militz Katarzyna Kurkowiak Aaron Mayer Luisa Carvalho Jorge Martins |
| author_sort | Matheus Crisostomo |
| collection | DOAJ |
| description | The present study aimed to evaluate the effect of citric acid on the properties of solid pine wood, which were submitted to thermomechanical treatment. A preliminary test was performed in a previous study to evaluate the influence of different temperatures of pressing and concentrations of citric acid on the physical properties of wood. After choosing the best treatments (170 °C and 5% and 10% of citric acid), the effect of these on the chemical properties (SEM, FTIR and pH); on the density profile using an X-ray microtomography and on the resistance to aging through an abrasion test were evaluated. The result of the chemical analysis showed an increase of the presence of ester functional groups, as well as better coverage and higher acidity of the surface. The density profile technique allowed us to observe the formation of peaks of density on the surface where the acid was applied. Lastly, it was also possible to verify an increase in the resistance to abrasions because of the application of citric acid. |
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| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T22:45:11Z |
| publishDate | 2023-09-01 |
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| series | Forests |
| spelling | doaj.art-45d86b2f088d49b18f275aecfe7020de2023-11-19T10:46:43ZengMDPI AGForests1999-49072023-09-01149183910.3390/f14091839Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical TreatmentMatheus Crisostomo0Cláudio Del Menezzi1Holger Militz2Katarzyna Kurkowiak3Aaron Mayer4Luisa Carvalho5Jorge Martins6Department of Forest Engineering, Faculty of Technology, University of Brasília, Brasília 70919-970, BrazilDepartment of Forest Engineering, Faculty of Technology, University of Brasília, Brasília 70919-970, BrazilWood Biology and Wood Products, University of Goettingen, Buesgenweg 4, 37077 Goettingen, GermanyWood Biology and Wood Products, University of Goettingen, Buesgenweg 4, 37077 Goettingen, GermanyWood Biology and Wood Products, University of Goettingen, Buesgenweg 4, 37077 Goettingen, GermanyDepartment of Wood Engineering, Polytechnic Institute of Viseu, 3504-510 Viseu, PortugalDepartment of Wood Engineering, Polytechnic Institute of Viseu, 3504-510 Viseu, PortugalThe present study aimed to evaluate the effect of citric acid on the properties of solid pine wood, which were submitted to thermomechanical treatment. A preliminary test was performed in a previous study to evaluate the influence of different temperatures of pressing and concentrations of citric acid on the physical properties of wood. After choosing the best treatments (170 °C and 5% and 10% of citric acid), the effect of these on the chemical properties (SEM, FTIR and pH); on the density profile using an X-ray microtomography and on the resistance to aging through an abrasion test were evaluated. The result of the chemical analysis showed an increase of the presence of ester functional groups, as well as better coverage and higher acidity of the surface. The density profile technique allowed us to observe the formation of peaks of density on the surface where the acid was applied. Lastly, it was also possible to verify an increase in the resistance to abrasions because of the application of citric acid.https://www.mdpi.com/1999-4907/14/9/1839citric acidthermomechanical modificationdimensional stabilitysolid timber |
| spellingShingle | Matheus Crisostomo Cláudio Del Menezzi Holger Militz Katarzyna Kurkowiak Aaron Mayer Luisa Carvalho Jorge Martins Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment Forests citric acid thermomechanical modification dimensional stability solid timber |
| title | Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment |
| title_full | Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment |
| title_fullStr | Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment |
| title_full_unstemmed | Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment |
| title_short | Effect of Citric Acid on the Properties of Sapwood of <i>Pinus sylvestris</i> Submitted to Thermomechanical Treatment |
| title_sort | effect of citric acid on the properties of sapwood of i pinus sylvestris i submitted to thermomechanical treatment |
| topic | citric acid thermomechanical modification dimensional stability solid timber |
| url | https://www.mdpi.com/1999-4907/14/9/1839 |
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