【作者】 蔡伟龙； 郑玉婴；

【Author】 Cai Weilong, Zheng Yuying(Fuzhou University, Fuzhou 350002)

【机构】 福州大学化学化工学院；

【摘要】 运用红外光谱和X-射线衍射分析对硬脂酸稀土热稳定剂进行结构研究。红外光谱分析表明固态硬脂酸稀土盐中硬脂酸根离子与稀土离子之间主要以离子键结合,区别于硬脂酸通过形成氢键而以二聚体结构存在。X-射线衍射分析得出硬脂酸稀土热稳定剂具有层状晶体结构,晶层由处于中间的稀土离子平面层两侧结合两层并行排列的硬脂酸根全伸展锯齿链所构成,且晶层中稀土分子轴倾斜于基面。更多还原

【Abstract】 Using infrared spectrum and power X-ray diffraction to analyze the the structure of rare-earth stearate. The results of IR showed that the bonds between the stearate and rare-earth metal ions in rare-earth stearate in solid state are main ionic character, while the stearic acid in solid state exists with dimeric structure through hydrogen bonding. The analytic data of Powder X-ray diffraction indicated that rare-earth stearate stabilizers have the stratified crystalline structure, the crystal laywer formed from a plane layer of rare-earth ions combined with two layers of fully extened zigzag chains of stearic acid radicals are inclined to the crystal layer planes.更多还原