期刊
WOOD SCIENCE AND TECHNOLOGY
卷 53, 期 1, 页码 151-164出版社
SPRINGER
DOI: 10.1007/s00226-018-1069-z
关键词
-
Sitka spruce wood specimens were heated at 120-140 degrees C and different relative humidity values (RHh), and their specific dynamic Young's moduli (E/), mechanical loss tangents (tan), and CIELAB color parameters were measured at 25 degrees C and 60% relative humidity before and after the removal of water-soluble extractives. The E/ and tan values were significantly decreased and increased, respectively, with increases in mass loss by heating at 100% RHh. After the removal of water-soluble extractives, the decreased E/ was increased and the increased tan was decreased. This suggested that water-soluble sugars, i.e., depolymerization products of hemicelluloses, acted as plasticizers to decrease E/ and increase tan values of hygrothermally treated wood, particularly for wood heated in humid conditions. By heating at 60-75% RHh, the E/ was slightly increased and tan was almost unchanged. The water-soluble extractives had little effect on the color of the hygrothermally treated wood, irrespective of RHh.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据