聚醚和聚氧乙烯烷基醚的气相色谱法分析

Analysis of polyether and polyoxyetnlene alkylether by the method of gas chromatography

以对甲苯磺酸-乙酸酐为裂解剂对试样进行处理,然后用SE-30毛细管色谱柱同时测定出聚醚和聚氧乙烯烷基醚的起始剂和环氧乙烷与环氧丙烷的质量比。该方法简单、快速,误差在±2％以内,相对标准偏差为0.4％。

In this paper, the sample is treated with p-toluenesulfonic acid-acetic anhydride as the cracking agent, and SE-30 capillary chromatographic column is employed to measure the initiator of polyether and polyoxyethylene alkyl ether and the mass ratio between ethylene oxide and propylene oxide at the same time. The method mentioned above is simple and efficient,the error is within +2% and the relative standard deviation is 0.4%.