超高效聚合物色谱法检测环氧树脂的分子量  

Molecular Weight Determination of Epoxy Resin by Advanced Polymer Chromatography System

作　　者：崔朋[1,2] 方红霞[1] 吴强林[1] 钱晨[1] 

机构地区：[1]黄山学院应用化学研究所,安徽黄山245041 [2]黄山学院分析测试中心,安徽黄山245041

出　　处：《化学试剂》2016年第6期539-542,共4页Chemical Reagents

基　　金：安徽省自然科学基金资助项目(1208085MB33);黄山学院自然科学基金资助项目(2015xkj012)

摘　　要：超高效聚合物色谱法(APC)是一种高效率、高分辨的聚合物表征技术,该技术可在10 min内实现聚合物的高效分离,同时获得其平均分子量及其分布参数。以典型油溶性低聚物环氧树脂为研究对象,探索APC测试油溶性低聚物分子量及其分布参数的方法和条件。与传统的凝胶渗透色谱(GPC)相比,采用APC方法分辨率高、重现性强,相对标准偏差(RSD)均低于0.5%。实验还考察了不同进样体积对测试结果的影响。结果表明,在样品浓度为0.1%时,随着进样体积的增大,在保持优异的分辨率的同时,色谱峰增强更为显著。获得高分辨率的APC图谱具有独特的组成峰型,有望作为"指纹图谱",用于油溶性低聚物的合成和组成分析。Advanced polymer chromatography（APC） is a newly developed high-resolution polymer characterization technique.Within 10 min,it can separate polymers with high resolution and obtain the relative average molecular mass（Mr） distribution of the polymers.Compared with traditional gel permeation chromatography（GPC）,APC system had the advantages of high sensitivity,good reproducibility and low relative standard deviation（RSD less than 0.5%）.Impact of injection volume on peak shape was also investigated,the result showed that the peak shapes raised significantly with larger injection volumes while the resolution maintained at the sample concentration of 0.1 mg/m L.In addition,the high resolution APC chromatograms show each resin has unique peak shape and oligomer component peaks,which can be used as a ＂fingerprint＂to trace back to the synthesis condition and methodology of resin.

关 键 词：超高效聚合物色谱 低聚物 环氧树脂 平均分子量分布 

分 类 号：O65[理学—分析化学]