选择马来酸酐、邻苯二甲酸酐和氯化苄作为木材改性剂，对杨木粉进行改性，采用扫描电子显微镜、傅里叶红外光谱、差式扫描量热仪和X射线衍射对改性前后杨木的热性能变化情况进行分析。DSC曲线分析表明，经过酯化、醚化改性后木材的热性能较改性前有不同程度的变化，其中木材经过氯化苄改性后，其玻璃化转化点温度降为100℃左右，具有较好的热塑性能；电镜扫描图与X射线衍射图谱显示，氯化苄改性杨木的微观形态发生了很大变化，木材原有的纤丝线状结构消失，苄基化木材细胞壁内部呈不规则的非结晶结构；红外光谱表明，木材经过氯化苄改性后，羟基被苄基取代，木材醚化效果明显。
Abstract
In this paper, the author chose cisbutanedioic anhydride, 1,2benzenedicarboxylic anhydride, benzyl chloride as esterification and etherification reagent, on the purpose of researching the diversification of poplar. SEM, IR, DSC,and Xray diffraction were used for diversification analysis. Using DSC, there are a great many of changes after esterification and etherification, especially by benzyl chloride. The benzylate poplar has good thermoplasticity, the melting temperature is about 100℃. The SEM and Xray results revealed that the thready microstructure of benzylate poplar disappear, which had anomalistic noncrystalline microstructure. The IR revealed that after benzylate, the hydroxide of wood was replaced by benzyl, and the effect of etherification was evident.
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参考文献
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基金
收稿日期：2009-03-03修回日期：2009-09-01基金项目：江苏省自然科学基金资助项目(BK2006522)；江西省科技攻关项目(050005)作者简介：张彰(1983—)，硕士。*孙丰文(通讯作者)，副研究员，研究方向为木材胶黏剂和木竹塑复合材料。Email: Sunfw2188@vip.sohu.com。引文格式：张彰,孙丰文,张茜. 酯化、醚化改性对木材热性能的影响[J]. 南京林业大学学报:自然科学版,2009,33(6):6-10.
