本文在室温条件下对木材表面自由基波谱进行了研究。结果表明:室温条件下,木材表面存在着几种自由基,它们来自木材中的高聚分子——木素、纤维素和半纤维素,其中以木素自由基浓度为最大。相同条件下,针叶材自由基浓度大于阔叶材,这是由于前者木素成分大于后者的缘故。 In this paper, the surface free radical spectra of wood were studied. The results showed that at room temperature, there are several free radicals on the surface of wood, which come from the high molecular weight molecules in wood - lignin, cellulose and hemicellulose, of which lignin free radicals concentration is the largest. Under the same conditions, softwood concentration of free radicals greater than hardwood, which is due to the former component of lignin is greater than the latter.