中文摘要：

为了使西南桦木材表面具备疏水性能,在等离子体环境下以三甲基氯硅烷（TMCS）为单体对其进行了表面修饰,并采用FTIR-ATR、XPS、SEM和静态接触角等手段对改性前后的表面性能进行了分析和表征。结果表明：T MCS与木材表面发生了硅烷化反应,引入了甲硅烷基,Si元素含量达到了22.82%;修饰后的木材表面形成了均匀的颗粒状结构,疏水性和疏水稳定性得到了明显提高;随着处理功率的增加,接触角呈现逐渐减小的趋势。

英文摘要：

The wood surface of Betula alnoides was modified by the trimethylchlorosilane（TMCS） plasma in order to improve the hydrophobic properties of Betula alnoides wood surface, the modified wood surface was characterized by fourier transformed infrared spectroscopy（FTIR-ATR）, X-ray photoelectron spectroscopy（XPS）, scanned electron microscopy（SEM） and static contact angle measurement. The results show that silylation of Betula alnoides wood surface was successfully achieved using TMCS plasma and the content of Si element reached 22.82%; the modified wood surface produced uniform grain structure, furthermore, the hydrophobicity and hydrophobic stability was significantly improved; the static contact angle decr eased gradually with the increasing input power.