欧美杨107应拉木的纤维形态与化学组成  

Fiber morphology and chemical composition of tension wood in Populus×euramericana cv.‘Neva'

作　　者：牛敏[1] 高慧[2] 赵广杰[1] 

机构地区：[1]北京林业大学材料科学与技术学院 [2]安徽农业大学林学与园林学院

出　　处：《北京林业大学学报》2010年第2期141-144,共4页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(30671641)

摘　　要：为了解欧美杨107应拉木纤维形态与化学成分构成,并以此分析欧美杨107应拉木作为制浆材的可行性,用切片法测定了应拉木和对应木的纤维形态,并按照GB/T2677(2-10)—1993分析其化学成分构成。结果表明:1)应拉木和对应木纤维的平均长度分别为1321和1227μm,长宽比分别为59.48和44.94,壁腔比分别为0.86和0.39。2)应拉木和对应木的Klason木素含量分别为17.20%和24.04%,硝酸乙醇纤维素含量分别为59.14%和45.52%,综纤维素含量分别为86.59%和78.41%,苯醇抽出物含量分别为1.32%和1.87%,1%NaOH抽出物含量分别为13.95%和21.58%,灰分含量都低于1%。根据对纤维形态和化学成分的测定结果判断:欧美杨107木材的应拉木和对应木都能满足制浆性能的要求,在实际生产中都可被用作制浆材,且应拉木制浆性能比对应木好。To ascertain fiber morphology and chemical composition of tension wood,and then to analyze the feasibility of tension wood pulping in Populus × euramericana cv.‘Neva＇,fiber morphologies of tension wood and opposite wood were measured by making slices and chemical compositions of mentioned wood were analyzed by GB/T 2677（2-10）--1993.The results showed that：1） for tension wood and opposite wood,average fiber length was 1 321 and 1 227 μm,the ratio of length to width was 59.48 and 44.94, and the ratio of double wall thickness to lumen diameter was 0.86 and 0.39,respectively.2） Also for tension wood and opposite wood,the content of Klason lignin was 17.20% and 24.04% ,the content of cellulose was 59.14% and 45.52% ,the content of acid-ethanol cellulose was 86.59% and 78.41% ,the content of extractive using benzene-ethanol was 1.32% and 1.87% ,the content of extractive using sodium hydroxide（concentration 1% ） was 13.95% and 21.58% ,respectively,and the ash contents were all less than 1% .Judging by the research on fiber morphology and chemical composition,tension wood and opposite wood of Populus × euramericana cv.‘Neva＇can satisfy the performance of pulping and be all regarded as materials to make pulping in actual production and the pulping property of tension wood will be better than that of opposite wood.

关 键 词：欧美杨107 应拉木 对应木 纤维形态 化学成分 

分 类 号：S781.42[农业科学—木材科学与技术]