Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba)
ABSTRACT The present study investigated the effect of heat treatment on the relative amount of cellulose in untreated and nanosilver-impregnated poplar wood (Populus alba). The impacts on physical and mechanical properties were further studied. Specimens were heated at 145°C and 165°C in hot air med...
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| Format: | Article |
| Language: | English |
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Universidade Federal Rural do Rio de Janeiro
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| Series: | Floresta e Ambiente |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000400112&lng=en&tlng=en |
| _version_ | 1817977983451791360 |
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| author | Siavash Bayani Behzad Bazyar Seyed Ahmad Mirshokraie Hamid Reza Taghiyari |
| author_facet | Siavash Bayani Behzad Bazyar Seyed Ahmad Mirshokraie Hamid Reza Taghiyari |
| author_sort | Siavash Bayani |
| collection | DOAJ |
| description | ABSTRACT The present study investigated the effect of heat treatment on the relative amount of cellulose in untreated and nanosilver-impregnated poplar wood (Populus alba). The impacts on physical and mechanical properties were further studied. Specimens were heated at 145°C and 165°C in hot air medium. In order to enhance heat transfer to the inner parts of specimens, separate sets of specimens were first impregnated with nanosilver suspension in a pressure vessel. Differential scanning calorimetry (DSC) analyses showed that due to high thermal resistance of cellulose, the cellulose relative volume percent increased along with the increase in thermal temperature and the consequent degradation of other wood polymers (hemicellulose and lignin). High correlation was found between the cellulose relative volume percent versus different physical and mechanical properties. Impregnation with nanosilver increased thermal conductivity in the specimens resulting in an enhanced thermal degradation of hemicellulose and lignin, translated into an increased cellulose relative volume. |
| first_indexed | 2024-04-13T22:23:30Z |
| format | Article |
| id | doaj.art-0e4f632dd849497f90c33a0a7f263315 |
| institution | Directory Open Access Journal |
| issn | 2179-8087 |
| language | English |
| last_indexed | 2024-04-13T22:23:30Z |
| publisher | Universidade Federal Rural do Rio de Janeiro |
| record_format | Article |
| series | Floresta e Ambiente |
| spelling | doaj.art-0e4f632dd849497f90c33a0a7f2633152022-12-22T02:27:08ZengUniversidade Federal Rural do Rio de JaneiroFloresta e Ambiente2179-808726410.1590/2179-8087.039816S2179-80872019000400112Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba)Siavash BayaniBehzad BazyarSeyed Ahmad MirshokraieHamid Reza TaghiyariABSTRACT The present study investigated the effect of heat treatment on the relative amount of cellulose in untreated and nanosilver-impregnated poplar wood (Populus alba). The impacts on physical and mechanical properties were further studied. Specimens were heated at 145°C and 165°C in hot air medium. In order to enhance heat transfer to the inner parts of specimens, separate sets of specimens were first impregnated with nanosilver suspension in a pressure vessel. Differential scanning calorimetry (DSC) analyses showed that due to high thermal resistance of cellulose, the cellulose relative volume percent increased along with the increase in thermal temperature and the consequent degradation of other wood polymers (hemicellulose and lignin). High correlation was found between the cellulose relative volume percent versus different physical and mechanical properties. Impregnation with nanosilver increased thermal conductivity in the specimens resulting in an enhanced thermal degradation of hemicellulose and lignin, translated into an increased cellulose relative volume.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000400112&lng=en&tlng=enrelative amount of celluloseheat treatmentnanosilver impregnationPopulus albathermal degradation |
| spellingShingle | Siavash Bayani Behzad Bazyar Seyed Ahmad Mirshokraie Hamid Reza Taghiyari Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) Floresta e Ambiente relative amount of cellulose heat treatment nanosilver impregnation Populus alba thermal degradation |
| title | Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) |
| title_full | Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) |
| title_fullStr | Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) |
| title_full_unstemmed | Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) |
| title_short | Effects of Heat Treatment on the Relative Amounts of Cellulose in Nanosilver-Impregnated and Untreated Poplar Wood (Populus alba) |
| title_sort | effects of heat treatment on the relative amounts of cellulose in nanosilver impregnated and untreated poplar wood populus alba |
| topic | relative amount of cellulose heat treatment nanosilver impregnation Populus alba thermal degradation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000400112&lng=en&tlng=en |
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