不同竹龄毛竹材表面颜色、润湿性及化学成分分析

Analysis of surface color and wettability and chemical composition of different age Phyllostachys pubescens

对不同竹龄毛竹竹材的表面颜色、润湿性及化学成分的变化进行分析。结果表明:随竹龄增加,氙灯照射后毛竹素材表面颜色逐渐变暗加深,颜色变化越来越明显。1年生竹材润湿性最好,2年生竹材润湿性较好,4个月竹材润湿性较弱,4年生竹材润湿性最弱。随竹龄增加,竹材表面半纤维素相对含量增加,木质素相对含量的差异较小;综纤维素含量在4个月至2年生之间逐渐降低,2年生时最低,2年生至10年生之间,变化较小。

The surface color,wettability and chemical composition of different age moso bamboo（Phyllostachys pubescens） were investigated,and the results showed that the color was deepened gradually with the increase of bamboo age.The wettability sequence of bamboo samples with different age was as follows： one-year bambootwo-year onefour-month onefour-year one.The relative content of hemicellulose of bamboo surface increased,the change of relative content of lignin between 4 month and 10 years was small.While bamboo at the age from 4 month to 2 years,relative content of holocellulose decreased and reached to minimum at the age of 2 years,there is a little change of relative content of holocellulose between 2-10 years.