[1]刘明德,康成芳,王巍洁,等.不同竹龄毛竹茎秆表面耐老化性能的差异[J].森林与环境学报,2021,41(06):667-672.[doi:10.13324/j.cnki.jfcf.2021.06.014]
 LIU Mingde,KANG Chengfang,WANG Weijie,et al.Differences in the aging resistance of moso bamboo stalk surfaces at different ages[J].,2021,41(06):667-672.[doi:10.13324/j.cnki.jfcf.2021.06.014]
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不同竹龄毛竹茎秆表面耐老化性能的差异()
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《森林与环境学报》[ISSN:2096-0018/CN:35-1327/S]

卷:
41卷
期数:
2021年06期
页码:
667-672
栏目:
出版日期:
2021-11-13

文章信息/Info

Title:
Differences in the aging resistance of moso bamboo stalk surfaces at different ages
作者:
刘明德 康成芳 王巍洁 韦鹏练
广西大学林学院, 广西 南宁 530004
Author(s):
LIU Mingde KANG Chengfang WANG Weijie WEI Penglian
College of Forestry, Guangxi University, Nanning, Guangxi 530004, China
关键词:
毛竹竹龄茎秆表面老化处理耐老化差异
Keywords:
moso bamboobamboo agestalk surfaceaging treatmentaging resistance difference
分类号:
S781.9
DOI:
10.13324/j.cnki.jfcf.2021.06.014
摘要:
为探究毛竹茎秆表面老化处理前后颜色、微观结构和化学成分随竹龄的变化规律,揭示毛竹茎秆表面耐老化能力与竹龄的关系,以4、6和8年生毛竹茎秆为研究对象,利用色差仪、台式扫描电镜能谱一体机、傅里叶变换红外光谱仪表征不同竹龄毛竹茎秆表面老化处理前后的颜色、微观结构、元素含量和官能团的变化。结果表明,不同竹龄毛竹茎秆表面颜色的总色差(ΔE)和明度(L*)在老化处理前差异不明显,经老化处理后不同竹龄毛竹茎秆表面颜色的总色差和明度均发生了较显著的变化,主要表现为:6、8年生毛竹茎秆表面的总色差变化幅度远小于4年生的;而4、8年生毛竹茎秆表面的颜色浅于6年生的。毛竹茎秆表面角质膜蜡质随着竹龄的增加会逐渐发生剥离变薄,不同竹龄毛竹茎秆表面角质膜蜡质经老化处理后的受损程度也有着较大的差异,8年生竹材受损最严重,4年生的次之,6年生的较为完整,竹材表面Si元素相对含量的变化与角质膜蜡质的受损程度密切相关。红外光谱(FTIR)分析表明,经老化处理后,不同竹龄毛竹茎秆表面各官能团的吸收峰均没有明显变化。从颜色变化、角质膜蜡质受损等方面可以比较出6年生毛竹抵御外界环境刺激、维持自身稳定的能力强于4、8年生毛竹。
Abstract:
In this study, we aimed to investigate the changes in color, microstructure, and chemical composition of the stalk surfaces moso bamboo (Phyllostachys edulis) of different ages before and after aging treatment, and to determine the relationship between the aging resistance of stalk surface and bamboo age. The changes in color, microstructure, elemental content, and chemical composition of moso bamboo stalks before and after surface aging were characterized based on colorimetry, scanning electron microscopy, energy dispersive spectroscopy, and Fourier infrared spectroscopy (FTIR), respectively, using 4-, 6- and 8-year-old moso bamboo stalks. The results revealed that there were substantial differences in the total color and lightness of moso bamboo stalk surface prior to aging treatment and that the total color difference and lightness changed significantly after treatment. Specifically, we observed that the total color difference of 6- and 8-year-old moso bamboo stalk surfaces was considerably less than that of 4-year-old stalks, whereas the color of the outer surfaces of 4- and 8-year-old moso bamboo stalks was lighter than that of 6-year-old stalks. The cuticular wax on the surface of moso bamboo stalks gradually peels and thins with increasing bamboo age, and we observed that the degree of damage to the surface of moso bamboo stalks after aging treatment also differed markedly among the bamboo of different ages. Notably in this regard, 8-year-old bamboo was the most severely damaged, followed by 4-year-old bamboo, whereas the surface structure of 6-year-old bamboo tended to remain more intact. Moreover, we found that changes in the relative elemental content of Si in the surface structures were closely associated with the degree of damage to the cuticular wax. FTIR analysis revealed that there were no significant changes in the absorption peaks of different functional groups on the surface of moso bamboo stalks at different ages after aging treatment. On the basis of the observed changes in color and damage to cuticular wax, it can be concluded that compared with 4- and 8-year-old moso bamboos, 6-year-old bamboo is characterized by better resistance to external environmental stimuli and a more effective maintenance of stability.

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备注/Memo

备注/Memo:
收稿日期:2021-08-18;改回日期:2021-09-17。
基金项目:国家自然科学基金项目(31901376);广西大学林学院科研基金项目(lxy201802)。
作者简介:刘明德(1996-),男,从事木材科学研究。Email:l_mingde102@163.com。
通讯作者:韦鹏练(1985-),男,讲师,博士,从事木材材性与加工利用研究。Email:ztzxwpl@163.com。
更新日期/Last Update: 1900-01-01