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A platform for research: civil engineering, architecture and urbanism
Dimensionally stable and highly durable bamboo material prepared through a simple surface furfurylation
Graphical abstract Display Omitted
Highlights A surface furfurylation was studied to improve the dimensional stability and durability of bamboo. The dimensional stability and durability of bamboo have significant increase with a low WPG. The mechanical properties did not decrease after surface furfurylation. A starting processing parameters was proposed for the simple surface furfurylation.
Abstract Furfurylation has long been adopted for wood modification, and found to be effective for bamboo as well. However, traditional full impregnation furfurylation would reduce the dimensional stability of bamboo although its biological durability was improved. Here, we found surface modification with furfuryl alcohol (surface furfurylation) was particularly suitable for bamboo, which is extremely hard to be treated due to its low transverse mass transportation. To optimize the surface furfurylation process for bamboo, an orthogonal experiment was designed with several key physical and mechanical properties tested, including weight percent gain (WPG), equilibrium moisture content (EMC), anti-swelling efficiency (ASE), modulus of rupture (MOR), modulus of elasticity (MOE). Using this process, dimensionally stable (ASE could reach as high as 50% by volume) and highly biological durable (strong resistance against mould, decay and termite) bamboo material with low consumption of furfuryl alcohol (FA) (average WPG lower than 15%) were prepared avoiding significant reduction in mechanical properties. Furthermore, a parameter combination of 70% FA concentration, 105 ℃ curing temperature, and 5 h curing time was proposed as an optimized process for pilot-scale production based on orthogonal experiments and range analysis.
Dimensionally stable and highly durable bamboo material prepared through a simple surface furfurylation
Graphical abstract Display Omitted
Highlights A surface furfurylation was studied to improve the dimensional stability and durability of bamboo. The dimensional stability and durability of bamboo have significant increase with a low WPG. The mechanical properties did not decrease after surface furfurylation. A starting processing parameters was proposed for the simple surface furfurylation.
Abstract Furfurylation has long been adopted for wood modification, and found to be effective for bamboo as well. However, traditional full impregnation furfurylation would reduce the dimensional stability of bamboo although its biological durability was improved. Here, we found surface modification with furfuryl alcohol (surface furfurylation) was particularly suitable for bamboo, which is extremely hard to be treated due to its low transverse mass transportation. To optimize the surface furfurylation process for bamboo, an orthogonal experiment was designed with several key physical and mechanical properties tested, including weight percent gain (WPG), equilibrium moisture content (EMC), anti-swelling efficiency (ASE), modulus of rupture (MOR), modulus of elasticity (MOE). Using this process, dimensionally stable (ASE could reach as high as 50% by volume) and highly biological durable (strong resistance against mould, decay and termite) bamboo material with low consumption of furfuryl alcohol (FA) (average WPG lower than 15%) were prepared avoiding significant reduction in mechanical properties. Furthermore, a parameter combination of 70% FA concentration, 105 ℃ curing temperature, and 5 h curing time was proposed as an optimized process for pilot-scale production based on orthogonal experiments and range analysis.
Dimensionally stable and highly durable bamboo material prepared through a simple surface furfurylation
Liu, Minghui (author) / Li, Wanju (author) / Guo, Fei (author) / Wang, Hankun (author) / Zhang, Xuexia (author) / Yu, Yan (author)
2020-12-22
Article (Journal)
Electronic Resource
English
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