采用凝胶渗透色谱法分析医用PVC中增塑剂的种类及含量  

Determination of kinds and contents of plasticizers in a medical PVC sample by gel permeation chromatography

作　　者：谷晓昱[1] 张志远[1] 

机构地区：[1]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《聚氯乙烯》2011年第1期30-33,共4页Polyvinyl Chloride

基　　金：北京化工大学中央高校基本科研业务费专项资金资助(项目号:ZZ1006)~~

摘　　要：在不对样品进行萃取分离等前处理的条件下,利用凝胶渗透色谱(GPC)示差(RI)-紫外(UV)双检测器连用测定医用PVC粒料中增塑剂的种类及含量。通过RI检测器可以确定粒料中PVC树脂、增塑剂环己烷1,2-二甲酸二异壬酯(DINCH)和环氧大豆油(ESO)的质量分数约分别为70.1%,22.6%和7.3%;通过UV检测器可确定由于含量低而不能用RI检测器测定的邻苯二甲酸酯类增塑剂DEHP的质量分数为0.2%。本方法避免了溶剂消耗量大、操作复杂且误差大的前处理过程,分析速度快,结果准确。Without extraction process, the kinds and contents of plasticizers in a medical PVC sample were determined by gel permeation chromatography （GPC） with refractive index （RI） and ultraviolet （UV） detectors. The contents of PVC resin and two kinds of plasticizers [i. e. di （isononyl） cyclohexane- 1, 2 - dicarboxylate （DINCH） and epoxidized soybean oil （ESO） ]in the PVC sample determined by the RI detector were about 70 wt%, 22.6 wt% and 7.3 wt%, respectively; while the content of di （2 - ethylhexyl） phthalate （DEHP）, which could not be detected by RI detector due to its low content, determined by UV detector was 0.2 wt%. By this method, the composition of the medical PVC sample was determined accurately and rapidly without the pretreatment process of sample, which was complicated to operate and would consume a large amount of solvent and bring bigger errors.

关 键 词：聚氯乙烯 凝胶渗透色谱 增塑剂 邻苯二甲酸酯 环氧大豆油 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ014