纳米木聚糖处理对木材防腐性能的影响  

Effect of Nano-xylan Treatment on Corrosion Resistance of Wood

作　　者：罗来朋 朱红霏 高珣 林琳[1] 庞久寅[1] LUO Lai-peng;ZHU Hong-fei;GAO Xun;LIN Lin;PANG Jiu-yin(Wood Material Science and Engineering Key Laboratory,Beihua University,Jilin 132013,China)

机构地区：[1]吉林省木质材料科学与工程重点实验室(北华大学)

出　　处：《林产工业》2018年第10期28-32,共5页China Forest Products Industry

基　　金：国家自然基金(31270589);中央财政林业科技推广示范项目(编号JLT[2017]14号);吉林省木质材料科学与工程重点实验室开放基金资助

摘　　要：以玉米芯为原料,利用正交试验优化提取温度、碱浓度、固液比等制备木聚糖的工艺参数。以制备的木聚糖为研究对象,通过改进工艺,制备粒径较小、分子量较低的纳米木聚糖,并以其为防腐剂处理杨木试样,结果表明:木聚糖提取率影响因素的顺序为:提取温度>碱浓度>固液比,理想工艺参数为提取温度70℃,碱浓度10%,固液比为1∶7,最佳提取率为42.647%;纳米木聚糖的粒径随温度的上升而减小,在60℃条件下,得到纳米级木聚糖的粒径最小,为45.99 nm;试件的载药量随着纳米木聚糖浓度增加,呈现上升趋势;当纳米级木聚糖浓度为10%时,杨木质量损失率在7.63%左右,属于强耐腐级别。This study used corn cob as raw material,and the process parameters of xylan were optimized by orthogonal experiment to optimize the extraction temperature,alkali concentration and solid liquid ratio.With the preparation of xylan as the research object,by improving the process,the nano-xylan with small diameter and low molecular weight were prepared,and the samples were treated by nano-xylan.The main findings indicated that the extraction temperature most strongly affected the extraction rate of xylose,followed by concentration,the lowest is solid liquid ratio.Ideal technological parameters for extraction temperature 70℃,10%alkali concentration,solid-liquid ratio of 1∶7,the best extraction rate is 42.647%;Nano particle size decreases with temperature rise of xylan,under the condition of 60℃,get the minimum particle size of nanoscale xylan 45.99 nm.The drug-loading rate of the specimen increased with the increase of the concentration of nano materials.And when the concentration of nano-xylan was 10%,the loss rate of poplar mass was 7.63%,which was strongly resistant to decay.

关 键 词：纳米木聚糖 质量损失率 木材防腐 载药量 提取率 

分 类 号：S782.33[农业科学—木材科学与技术]