红外光谱法研究苯胺和环氧丙烷的共聚机理及共聚物的表征  

Studies on the Mechanism of Copolymerization of Aniline and Propylene Oxide and Characterization of Copolymer via FTIR Technique

作　　者：李美超[1] 胡佳琦[2] 刘艳娜[2] 马淳安[2] 

机构地区：[1]浙江工业大学分析测试中心,杭州310032 [2]浙江工业大学化学工程与材料学院,绿色化学合成技术国家重点实验室培育基地,杭州310032

出　　处：《高等学校化学学报》2008年第8期1544-1548,共5页Chemical Journal of Chinese Universities

基　　金：国家'九七三'计划(批准号:2003CCA01300);国家自然科学基金(批准号:20376074);浙江省自然科学基金(批准号:Y406381)资助

摘　　要：采用原位红外光谱技术对苯胺和环氧丙烷的电化学共聚机理进行了研究,研究结果表明,环氧丙烷能在苯胺及其低聚物阳离子自由基的催化作用下发生α位开环,与苯胺发生电化学共聚,生成了含有芳香-脂肪醚结构的共聚物.采用显微红外成像技术研究苯胺和环氧丙烷共聚物在电极表面的生长特点发现,该共聚物能在电极表面从中间向两侧有规律地生长.Copolymerization is often used as one of the most important method to improve the physical and chemical properties of a polymer. Propylene oxide is often added to the electrolyte during electrochemical polymerization to improve some properties of the polymer. Therefore, polyaniline-poly （ propylene oxide ） （ PAN- PPO） was synthesized in aqueous solution containing aniline and propylene oxide by electrochemical method in this paper. In situ FTIR spectroscopy was used to investigate its electrochemical copolymerization mechanism. It showed that α-ring-opening reaction of propylene oxide might be initiated by radical catalyst from aniline and its oligomer, and then copolymerization of aniline and propylene oxide took place to form structures with aliphatic-aromatic ether. In addition, the PAN-PPO film formation was regular from the middle to two sides on the platinum surface, which was characterized by FTIR microscopic image technique.

关 键 词：苯胺 环氧丙烷 原位红外光谱技术 显微红外成像技术 

分 类 号：O657.33[理学—分析化学] O621.25[理学—化学]