用C_1柱的反相液相色谱对辛基酚聚氧乙烯醚型非离子表面活性剂快速分离和测定其氧乙烯聚合物分布(英)(待续)

Rapid Separation of Non-ionic Surfactants of PolyethoxylatedOctylphenol and Determination of Ethylene Oxide Oligomer Distribution by C_1 ColumnReversed-Phase Liquid Chromatography

提出了一个迅速、简单、可重复进行的反相ＨＰＬＣ法， 用来分离和定性辛基酚聚氧乙烯醚表面活性剂的各种齐聚物组分。使用一支Ｃ１ 三甲基硅烷基（ＴＭＳ） 色谱柱得到很高的分离度和灵敏度。本方法对聚乙氧基化的辛基酚聚氧乙烯单元直到４０ 的ＰＥＯＰ表面活性剂（ 摩尔质量分布大约达到２０００） 进行了成功的分离和鉴定。８ 种ＰＥＯＰ表面活性剂的齐聚物分布的情况给予了计算和图形描述。对流动相组成和制备所用的溶剂对齐聚物分离影响进行了详细的研究。

A rapid,simple and reproducible reversed-phase high-performance liquid chromatographic(HPLC) method was developed for the separation and characterization of individual oligomers in polyethoxylated octylphenol(PEOP) surfactants with high resolution and sensitivity,using a C 1 trimethylsilyl(TMS) column.With this technique,oligomers of PEOP surfactants containing up to 40 ethylene oxide units (molecular mass distributions up to ca.2000)were successfully resolved and identified.The oligomer distribution of the eight PEOP surfactants studied were calculated and depicted graphically The effects of the mobile phase composition and of the solvents used to prepare PEOP surfactant solutions on the separation of oligomers were investigated in detail.