大麻秆芯的物理性质和化学组分

Physical properties and chemical composition of a hemp core

参考了国家木材物理性能和造纸原料化学组分分析标准,对大麻Cannabis sativa秆芯的主要物理性能和化学组分进行分析。结果显示,大麻秆芯壁和秆芯的气干密度分别为0.240g·cm-3和0.193g·cm-3;大麻秆芯壁的弦向气干干缩率为5.68%,大麻秆芯的弦向气干干缩率为7.37%;大麻秆芯壁和秆芯的吸水率都随时间递增,12d后基本达吸水平衡;大麻秆芯的综纤维素质量分数为799.1g·kg-1,酸不溶木质素质量分数为191.6g·kg-1,热水抽提物、冷水抽提物、苯醇抽提物、10g·kg-1氢氧化钠抽提物质量分数分别为56.6,42.6,57.2,308.1g·kg-1,灰分为14.8g·kg-1,水分为95.8g·kg-1。

With reference to the national standard for physical and chemical properties of wood and the raw material for paper,the main physical and mechanical properties of a hemp core were analyzed.Results showed that the air-dry density of the hemp core wall was 0.240 g·cm-3;whereas the hemp core was 0.193 g·cm-3;the air-dried tangential shrinkage ratio for the hemp core wall was 5.68%,but for the hemp core it was 7.37%.Water absorption for the hemp core and the hemp core wall increased over time maintaining a balance for up to 12 d.Additionally,holocellulose of the hemp core was 799.1 g·kg-1,the acid insoluble lignin was 191.6 g·kg-1,the hot water extractive was 56.6 g·kg-1,the cold water extractive was 42.6 g·kg-1,and the benzene and alcohol extractive was 57.2 g·kg-1.Also,the 10.0 g·kg-1 NaOH extractive was 308.1 g·kg-1,the ash content was 14.8 g·kg-1,and the moisture content was 95.8 g·kg-1.