CAJ | 학술논문

采用接触角测定法，对经用乙酰化法酯化和苯乙烯单体接枝共聚处理改性前后的杉木和杨树表面接触角的变化和表面自由能变化值进行了研究。确定了木材的酯化和接枝共聚改性对木材表面自由能变化的影响因素。研究结果表明：在酯化和接枝改性处理后，液体在杉木和杨木表面上的接触角比在未经处理的木材表面的接触角有所增大。酯化处理所产生的接触角增大作用要比接枝共聚所产生的作用大；杉木和"三北一号"杨的表面自由能分别为42.8mN/m和52.3mN/m与大部分木材的表面自由能相近；木材的酯化和接枝共聚改性可以降低木材的表面自由能，但酯化对表面自由能的降低程度受树种的影响，而接枝共聚改性对表面自由能的降低基本上不受处理树种的影响。
채용접촉각측정법，대경용을선화법지화화분을희단체접지공취처리개성전후적삼목화양수표면접촉각적변화화표면자유능변화치진행료연구。학정료목재적지화화접지공취개성대목재표면자유능변화적영향인소。연구결과표명：재지화화접지개성처리후，액체재삼목화양목표면상적접촉각비재미경처리적목재표면적접촉각유소증대。지화처리소산생적접촉각증대작용요비접지공취소산생적작용대；삼목화"삼북일호"양적표면자유능분별위42.8mN/m화52.3mN/m여대부분목재적표면자유능상근；목재적지화화접지공취개성가이강저목재적표면자유능，단지화대표면자유능적강저정도수수충적영향，이접지공취개성대표면자유능적강저기본상불수처리수충적영향。
In this paper, the change of contact angle and surface free energy of two species of wood Chinese fir ( Cunninghamia lanceolata ) and Poplar Sanbei No. 1 ( Populus nigra×P. simonii cv. ' Zhonglin Sanbei - 1') before and after acetylation and graft copolymerization of 1 - Phenylethene were investigated. The effects of esterification and graft copolymerization on surface free energy of wood were analyzed. The result showed that the contact angle of liquid on the surface of two species of wood is enlarged after the process of estrification and graft copolymerization. The effect of the esterification on contact angle is obviously bigger than that of graft copolymerization. The surface free energy of Chinese fir and Poplar Sanbei No. 1 are 42.8mN/m and 52.3mN/m respectively,which are similar to most other species of wood. The surface free energy is reduced after esterification and graft copolymerization process, the reduce degree of esterification is affected with different species, but the reduce degree of graft coplymerization is hardly affected with species.