Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol
Intending to achieve more green and economical graphene impregnated modified fast-growing poplar wood veneer for heat conduction, this study proposes and investigates the feasibility of modified veneer with graphene/Polyvinyl alcohol (Gr/PVA) impregnation mixture to improve its thermal conductivity....
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doaj-b6fc0c9cb4a2440e97ef4c9c563fd6682021-07-01T00:02:21ZengMDPI AGForests1999-49072021-06-011277777710.3390/f12060777Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl AlcoholShuang-Shuang Wu0Xin Tao1Wei Xu2College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, ChinaCollege of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, ChinaIntending to achieve more green and economical graphene impregnated modified fast-growing poplar wood veneer for heat conduction, this study proposes and investigates the feasibility of modified veneer with graphene/Polyvinyl alcohol (Gr/PVA) impregnation mixture to improve its thermal conductivity. The absorbance and viscosity of the Gr/PVA impregnation mixtures are observed to expound the Gr/PVA ratio effects on the mixtures. Simultaneously, the weight percent gain, chromatic aberration, and thermal conductivity of the modified veneers are measured to determine the impregnation effect and the optimal impregnation formula. Further, the chemical structure, crystallinity, and thermal stability of the optimal sample impregnated with Gr/PVA are tested. The results show that the thermal properties of the Gr/PVA impregnated modified veneer have not all been improved. Still, both the dispersibility of the impregnation mixtures and the impregnation effect is affected by the Gr/PVA ratio. The data shows that the optimal thermal conductivity of modified veneer, which is up to 0.22 W·m<sup>−1</sup>·K<sup>−1</sup> and 2.4 times the untreated one, is dipped by the mixture of 10 wt.% PVA concentration and 2 wt.% MGEIN addition. According to the characterization tests, the crystallinity of the modified veneer reduces, but the thermal stability improves.https://www.mdpi.com/1999-4907/12/6/777thermal conductivitygraphenepolyvinyl alcoholwood veneers |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shuang-Shuang Wu Xin Tao Wei Xu |
spellingShingle |
Shuang-Shuang Wu Xin Tao Wei Xu Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol Forests thermal conductivity graphene polyvinyl alcohol wood veneers |
author_facet |
Shuang-Shuang Wu Xin Tao Wei Xu |
author_sort |
Shuang-Shuang Wu |
title |
Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol |
title_short |
Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol |
title_full |
Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol |
title_fullStr |
Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol |
title_full_unstemmed |
Thermal Conductivity of Poplar Wood Veneer Impregnated with Graphene/Polyvinyl Alcohol |
title_sort |
thermal conductivity of poplar wood veneer impregnated with graphene/polyvinyl alcohol |
publisher |
MDPI AG |
series |
Forests |
issn |
1999-4907 |
publishDate |
2021-06-01 |
description |
Intending to achieve more green and economical graphene impregnated modified fast-growing poplar wood veneer for heat conduction, this study proposes and investigates the feasibility of modified veneer with graphene/Polyvinyl alcohol (Gr/PVA) impregnation mixture to improve its thermal conductivity. The absorbance and viscosity of the Gr/PVA impregnation mixtures are observed to expound the Gr/PVA ratio effects on the mixtures. Simultaneously, the weight percent gain, chromatic aberration, and thermal conductivity of the modified veneers are measured to determine the impregnation effect and the optimal impregnation formula. Further, the chemical structure, crystallinity, and thermal stability of the optimal sample impregnated with Gr/PVA are tested. The results show that the thermal properties of the Gr/PVA impregnated modified veneer have not all been improved. Still, both the dispersibility of the impregnation mixtures and the impregnation effect is affected by the Gr/PVA ratio. The data shows that the optimal thermal conductivity of modified veneer, which is up to 0.22 W·m<sup>−1</sup>·K<sup>−1</sup> and 2.4 times the untreated one, is dipped by the mixture of 10 wt.% PVA concentration and 2 wt.% MGEIN addition. According to the characterization tests, the crystallinity of the modified veneer reduces, but the thermal stability improves. |
topic |
thermal conductivity graphene polyvinyl alcohol wood veneers |
url |
https://www.mdpi.com/1999-4907/12/6/777 |
work_keys_str_mv |
AT shuangshuangwu thermalconductivityofpoplarwoodveneerimpregnatedwithgraphenepolyvinylalcohol AT xintao thermalconductivityofpoplarwoodveneerimpregnatedwithgraphenepolyvinylalcohol AT weixu thermalconductivityofpoplarwoodveneerimpregnatedwithgraphenepolyvinylalcohol |
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