Analysis of Photostabilizer in High Density Polyethylene by Reverse-and Normal-Phase HPLC
Analysis of Photostabilizer in High Density Polyethylene by Reverse-and Normal-Phase HPLC
复制标题
采用反相和正相 HPLC 分析高密度聚乙烯中的光稳定剂
DOI：
10.1080/01496399608001047
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发表时间：
1996
影响因子：
2.8
通讯作者：
N. Márquez
中科院分区：
文献类型：
--
作者：
A. Caceres;F. Ysambertt;J. López;N. Márquez
摘要 使用C-18、氰基、硅胶和氨基柱，以不同溶剂混合物为流动相，通过反相和正相液相色谱（HPLC）对光稳定剂型HALS进行分析。分析的稳定剂是 Tinuvin 770 和 Chimassorb 944。使用 NH2 柱和乙腈/水作为流动相获得最佳分离效果。此外，还进行了三种类型的提取程序以将这些添加剂从聚合物基质中分离出来。最有效的萃取方法是通过用甲苯回流样品来实现。使用此方法发现添加剂的回收率为 95%。
Abstract Photostabilizer-type HALS were analyzed by reverse-and normal-phase liquid chromatography (HPLC) using C-18, cyano, silica, and amino columns with different solvent mixtures as the mobile phase. The stabilizers analyzed were Tinuvin 770 and Chimassorb 944. The best separation was attained using a NH2-column and acetonitrile/water as the mobile phase. Also, three types of extraction procedures were performed to isolate these additives from the polymeric matrix. The most efficient extraction method was achieved by refluxing the sample with toluene. Recoveries of 95% were found for additives using this method.