Influence of degree of polymerization of cellulose and hemicellulose on strength loss in fire-retardant-treated southern pine

被引：100

作者：

Sweet, MS ^{[1
]}

Winandy, JE ^{[1
]}

机构：

[1] US Forest Serv, USDA, Forest Prod Lab, Madison, WI 53705 USA

来源：

HOLZFORSCHUNG | 1999年 / 53卷 / 03期

关键词：

fire-retardant; strength loss; degree of polymerization; hemicellulose;

D O I：

10.1515/HF.1999.051

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Southern pine boards, both untreated and treated with a fire retardant, were exposed to either a room temperature or high temperature (66 degrees C (150 degrees F)) environment. Strength properties were measured after 1 and 1-1/2 years of exposure, respectively. The degree of polymerization and the chemical composition of alpha-cellulose isolated from the exposed wood were measured. Little relationship was found between degree of polymerization and strength. However, a strong relationship was found between the amount of mannan in the alpha-cellulose isolated from the wood and the modulus of rupture and the work-to-maximum load of solid wood. This correlation leads to the conclusion that hemicellulose plays an important role in determining the strength of wood.

引用

页码：311 / 317

页数：7

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