Study on Surface Energy Characteristics of Poplar and Yellow Pine Strands

作     者：ZHANG Yang WANG Siqun 

作者机构：Tennessee Forest Products Center University of Tennessee 2506 Jacob Dr.Knoxville TN 37996-4570 USA Nanjing Forestry University Nanjing 210037 P.R.China 

出 版 物：《Chinese Forestry Science and Technology》 (中国林业科技（英文版）)

年 卷 期：2006年第5卷第2期

页      面：7-10页

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：This study is supported by the project of natural science basic research in Jiangsu universities under Contact Number 05KJA22019 namely research on the properties modification of fast-growing poplar wood 

主　　题：surface contact angle free energy wettability absorbed liquid 

摘      要：The objective of this study was to investigate the surface free energy of poplar and yellow pine strands by Wilhelmy Plate Method. The measurement items included the surface contact angle, surface free energy and change of sample weight. Thirty industrial strands were randomly collected for each condition. The samples were cut down to 25.0-26.0 mm long, 7.0-8.0 mm wide. The density and thickness of each sample were also tested. The range of density was from 0.35 to 0.75 g/cm^3 and the range of thickness was from 0.5 to 1.0 ram. The research result shows that there is a close relationship between the wettability, mass change and moisture content. Both the density and the thickness of the strand have a small influence on the surface contact angle and the surface free energy.