Kurganov Alexander, Kanateva Anastasiya, Shiryaeva Valeriya, Popova Tamara, Korolev Alexander
Topchiev institute of petrochemical synthesis RAS, Moscow, Russian Federation.
J Sep Sci. 2017 Sep;40(18):3675-3681. doi: 10.1002/jssc.201700413. Epub 2017 Jul 31.
Poly[oligo(ethylene glycol)diacrylate]s were investigated as potential candidates for application as stationary phases in capillary gas chromatography. Depending on the molar mass of the monomer, up to three different phase transitions were observed in calorimetric scans of the polymers. Two transitions have been identified as the glass transition and melting of crystallites while the nature of the third effect remains unknown. The new stationary phases demonstrate a good separating ability and selectivity in the viscous-elastic state, i.e. at temperatures above the glass transition and melting points. The new polymeric stationary phases possess selectivity similar to conventional PEG columns but provide better thermal stability than conventional PEG stationary phases.
聚[低聚(乙二醇)二丙烯酸酯]被研究作为毛细管气相色谱固定相的潜在候选物。根据单体的摩尔质量，在聚合物的量热扫描中观察到多达三种不同的相变。其中两种转变已被确定为玻璃化转变和微晶的熔化，而第三种效应的性质仍然未知。新型固定相在粘弹性状态下，即在高于玻璃化转变温度和熔点的温度下，表现出良好的分离能力和选择性。新型聚合物固定相具有与传统聚乙二醇柱相似的选择性，但比传统聚乙二醇固定相具有更好的热稳定性。
