有机硅席夫碱聚氨酯液晶色谱固定液的合成及性能研究  

Synthesis and performance study of organic silicon schiff base polyurethane liquid crystal stationary liquid

作　　者：王利鸿[1] 申书昌[1] 

机构地区：[1]齐齐哈尔大学分析测试中心,齐齐哈尔161006

出　　处：《分析试验室》2016年第1期69-72,共4页Chinese Journal of Analysis Laboratory

基　　金：黑龙江省自然科学基金项目(B201101)资助

摘　　要：以对羟基苯甲醛、3-氯-1-丙醇、对苯二胺合成液晶基元—1,4-二(4-丙氧基醇苯亚胺基)苯,液晶基元与对苯二异氰酸酯和1,3-双(3-氨基丙基)四甲基二硅氧烷反应合成有机硅席夫碱聚氨酯液晶聚合物。采用红外光谱、X射线衍射、差式扫描量热分析、偏光显微镜、X射线能谱等手段对液晶聚合物的结构、热稳定性、液晶性能、元素组成及分布进行了测试与表征。用此液晶聚合物作为气相色谱固定液,制备成气相色谱填充柱,测定了该色谱柱的相对极性,苯取代物及二氯苯的同分体异构体的分离性能。该液晶聚合物作为色谱固定液具有较强的分离能力。A new kind of Schiff base liquid crystal unit which was called 1,4-two （4-oxypropyl group acohol phenylimino） benzene was synthesized using hydroxy-benzaldehyde, 3-chloropropanol, and p-phenylenediamine as raw materials. Organic silicon Schiff base polyurethane liquid crystal polymer was synthesized by p-phenylene diisocyanate, 1, 4-two （4-oxypropyl group acohol phenylimino ） benzene and 1, 3-bis （3-aminopropyl） tetramethyldisiloxane as raw materials. The structure, thermal stability, liquid crystal property, element composition and distribution of liquid crystal polymer were characterized and tested by infrared spectroscopy, X ray diffraction, differential scanning calorimetry, polarizing optical microscope and X ray energy spectroscopy. The gas chromatographic column was made by liquid crystal polymer as chromatography stationary phase. The relative polarity of the column and the separation property of benzene substituents and dichlorobenzene isomers were determined. The experiment results showed that the liquid crystal polymer had strong separation ability as chromatography stationary liquid.

关 键 词：有机硅席夫碱聚氨酯液晶 气相色谱固定液 取代苯异构体分离 

分 类 号：O657.7[理学—分析化学]