摘要
为实现竹纤维素在造纸、竹工艺品制作等工业生产中更高效地利用,以1 a生毛竹材为研究材料,探究亚氯酸盐法和亚硫酸盐法2种脱木素处理方法对毛竹颜色的影响。结果表明:2种方法脱木素效果均与处理时间呈正相关。亚氯酸盐法竹材的明度值L^(*)相对于未处理材增大了18.78%;亚硫酸盐法竹材的明度值L^(*)相对于未处理材减小了18.47%。亚氯酸盐法竹材的红绿轴色品指数a^(*)、黄蓝轴色品指数b^(*)及饱和度差值ΔC均随处理时间延长而减小,毛竹颜色向蓝绿变化且越来越暗淡,亚硫酸盐法竹材的a^(*)、b^(*)及ΔC均随处理时间的延长逐渐增大,毛竹颜色向红黄变化且越来越鲜明。2种方法竹材的色差ΔE、色相差ΔH均随处理时间的延长呈增大趋势,但亚硫酸盐法的ΔH增幅较小且未表现出明显规律性。
In order to realize more efficient utilization of bamboo cellulose in papermaking,craft manufacturing and other industrial production,bamboo timber from 1-year-old Phyllostachys edulis was taken as the research material.The effects of two delignification treatment methods(chlorite treatment and sulfite treatment)on the timber color were studied.The results showed that the delignification effects of both methods were positively correlated with the treatment time.The lightness value L^(*)of chlorite-treated bamboo timber increased by 18.78%compared with untreated one;the lightness value L^(*)of sulfite-treated bamboo decreased by 18.47%compared with untreated one.Red green axis chromaticity index a^(*),yellow blue axis chromaticity index b^(*)and saturation differenceΔC of bamboo timber with chlorite treatment decreased with the increase of treatment time.The timber color turned to blue and green and became darker.The a^(*),b^(*)andΔC of bamboo timber with sulfite treatment increased gradually with the treatment time.The timber color changed to red and yellow and became brighter.TheΔE andΔH of bamboo timber with both treatments showed a rising tendency with the increase of treatment time,but theΔH with sulfite treatment showed a limited increase and no clear pattern.
作者
孔令凤
张双燕
牛思杰
王传贵
杨顺
KONG Ling-feng;ZHANG Shuang-yan;NIU Si-jie;WANG Chuan-gui;YANG Shun(College of Forestry and Landscape Architecture,Anhui Agricultural University,Hefei 230036,Anhui,China)
出处
《竹子学报》
2022年第3期27-34,共8页
Journal of Bamboo Research
基金
安徽高校自然科学研究项目(KJ2020A0130)
国家林业和草原局/北京市共建竹藤科学与技术重点实验室开放基金项目(ICBR-2020-10)。
关键词
毛竹
脱木素
明度
饱和度差
红外光谱分析
质量损失率
Phyllostachys edulis
Delignification
Lightness
Saturation difference
Infrared spectrum analysis
Mass loss rate
