[1]吴燕,韩岩,黄楠,等.脱木素工艺对透明木材性能的影响[J].林业工程学报,2019,4(06):98-104.[doi:10.13360/j.issn.2096-1359.2019.06.014]
 WU Yan,HAN Yan,HUANG Nan,et al.Effect of delignification process on properties of transparent wood[J].Journal of Forestry Engineering,2019,4(06):98-104.[doi:10.13360/j.issn.2096-1359.2019.06.014]
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脱木素工艺对透明木材性能的影响()
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《林业工程学报》[ISSN:1001-8081/CN:32-1160/S]

卷:
4
期数:
2019年06期
页码:
98-104
栏目:
生物质能源与材料
出版日期:
2019-11-20

文章信息/Info

Title:
Effect of delignification process on properties of transparent wood
文章编号:
2096-1359(2019)06-0098-07
作者:
吴燕1韩岩1黄楠1吴佳敏1唐彩云1周季纯1黄琼涛2
1.南京林业大学家居与工业设计学院,南京 210037; 2.广东省宜华生活科技股份有限公司,广东 汕头 515834
Author(s):
WU Yan1 HAN Yan1 HUANG Nan1 WU Jiamin1 TANG Caiyun1 ZHOU Jichun1 HUANG Qiongtao2
1.College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China; 2.Guangdong Yihua Living Science and Technology Co.LTD., Shantou 515834 Guangdong, China
关键词:
脱木素工艺 透明木材 光学性能 力学性能 正交试验法
Keywords:
delignification process transparent wood optical property mechanical property orthogonal test method
分类号:
TQ351
DOI:
10.13360/j.issn.2096-1359.2019.06.014
文献标志码:
A
摘要:
以木材为基本原料,通过去除木质素,再浸渍折射率相匹配的树脂可以制备出既保留木材的分层结构,又具有优异光学和力学性能的透明木材。脱木素工艺是制备透明木材的关键步骤,然而木质素的过量去除不仅浪费试剂、消耗时间,且容易直接导致木材的机械性能减弱。因此,优化脱木素工艺,实现透明木材的高透光率与优良力学性能的平衡至关重要。笔者采用正交试验法研究了脱木素工艺的影响因素及各因素对化学成分,透明木材光学性能及力学性能变化的作用,优化了透明木材制备过程中的脱木素工艺的最佳参数。同时,结合傅里叶红外光谱分析(FT-IR)、环境扫描电镜分析(SEM)对样品的化学组成和表面形貌进行了评价。实验结果表明脱木素最佳工艺条件为:NaClO2的质量分数为1%,处理温度为85 ℃,处理时间为6 h,该条件下制备的透明木材的透光率为68%,拉伸强度为113 MPa。
Abstract:
At present, energy consumption in the building and construction has increased rapidly because much more electrical equipment is utilized in daily live, especially in the electric lights.One way to reduce electrical energy in buildings is to use natural light partially replacing the artificial light.The transparent wood material is one of the promising potential candidates for energy-saving buildings due to its excellent optical properties.The transparent wood with excellent optical and mechanical properties can be prepared by removing lignin and impregnating resin with a matched refraction index of wood cell walls.Delignification process is a key step in the preparation of transparent wood.However, excessive removal of lignin not only wastes chemicals and processing time, but also leads to the weakening of mechanical properties of wood.Therefore, it is very important to optimize the delignification process and achieve the balance between high light transmittance and excellent mechanical properties of the transparent wood.In this paper, the influence factors of delignification process and its effects on the changes of chemical compositions, optical and mechanical properties of the transparent wood were studied by the orthogonal experiment, and the production parameters of delignification process in the preparation of transparent wood were optimized.The chemical compositions and surface morphology of the control samples and transparent wood samples were evaluated by the Fourier transform infrared spectroscopy(FT-IR)and scanning electron microscope(SEM).Experimental results showed that the optimum technological conditions were as follows: NaClO2 mass ratio of 1%, the processing temperature of 85 ℃, and the processing time of 6 h.When the processing conditions were using, the prepared transparent wood with the light transmittance of 68% and the tensile strength of 113 MPa could be achieved.

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备注/Memo

备注/Memo:
收稿日期:2019-03-02 修回日期:2019-08-23 基金项目:国家自然科学基金(31800471); 南京林业大学大学生实践创新训练计划项目(201710298081Y); 宜华生活科技股份有限公司资助项目(YH-NL-201507)。 作者简介:吴燕,女,副教授,研究方向为功能型家居材料改性。E-mail:wuyan@njfu.edu.cn
更新日期/Last Update: 2019-11-10