Steam exploded wood cell walls reveals improved gas permeability and sound absorption capability

被引：30

作者：

Kang, Chun-Won ^{[1
,2
]}

Kolya, Haradhan ^{[1
,2
]}

Jang, Eun-Suk ^{[1
,2
]}

Zhu, Shaohua ^{[1
,2
]}

Choi, Byung-Sook ^{[1
,2
]}

机构：

[1] Jeonbuk Natl Univ, Coll Human Ecol, Dept Housing Environm Design, Jeonju 54896, Jeonbuk, South Korea

[2] Jeonbuk Natl Univ, Coll Human Ecol, Res Inst Human Ecol, Jeonju 54896, Jeonbuk, South Korea

来源：

APPLIED ACOUSTICS | 2021年 / 179卷

基金：

新加坡国家研究基金会;

关键词：

Low-pressure steam explosion; Wood cell walls; Sound absorption coefficient; Air permeability; LIGNIN; EXPLOSION;

D O I：

10.1016/j.apacoust.2021.108049

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Steam explosion is a useful method to soften and dimensionally stabilizing wood. The effects of steam explosion at low pressure (6 bar) on wood cell walls are characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), capillary flow porometry and two-microphone transfer function. The average sound absorption coefficient (SAC) of treated Chinaberry samples on the cross-sectional surface exhibited significant improvement of 79% relative to control specimens over a wide frequency range of 250-6400 Hz. Whereas, a little increment SAC of 5% was observed in the case of Ginkgo wood. Color of steam-exploded woods became black due to chemical reactions in wood cell walls during the steam explosion. The air permeability, SAC and color change are correlated with the results of FTIR and XRD. These results suggest that steam explosion could be used to manufacture wood-based sound absorption board to control the acoustical housing environment. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：7

共 43 条

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