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Synthesis and characterization of polyurethane/polythiophene conducting copolymer by electrochemical method

机译：聚氨酯/聚噻吩导电共聚物的电化学合成与表征

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In the first step of this study, conducting homopolymers of thiophene were synthesized by electrochemical method using three different supporting electrolytes (LiClO4, Et4NBF4, Bt(4)NPF(6)) and two different solvents (acetonitrile and benzonitrile) in anhydrous medium. Polythiophene (PT) (LiClO4) was shown the highest conductivity with 0.35 S cm(-1) in the acetonitrile solvent medium, PT (Et4NBF4) was shown the highest conductivity with 0.54 S cm(-1) in the benzonitrile solvent medium. Then, polyurethane/polythiophene (PU/PT) conducting copolymers were prepared using PU as an insulating matrix, their structures and properties were analyzed. The electrochemical properties of polymers were investigated by cyclic voltammetry (CV). The conductivities of polymers were measured by four probe technique. It was found that all homopolymers and bipolymers which were of conducting mechanism from the Gouy balance magnetic measurements. FTIR spectra were taken to analyze the structural properties of polymers. Surface analyses of polymers were clarified by scanning electron microscopy (SEM). Thermal analyses of the polymer films was done by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). From thermal analyses, it was found that among the PTs, PT (Et4NBF4) and among the copolymers PU/PT (Et4NBF4) were shown the highest thermal stability as 191 and 210 degreesC, respectively. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 23]
机译：在这项研究的第一步中，采用无水介质中的三种不同的支持电解质（LiClO4，Et4NBF4，Bt（4）NPF（6））和两种不同的溶剂（乙腈和苄腈）通过电化学方法合成了噻吩的导电均聚物。在乙腈溶剂介质中，聚噻吩（PT）（LiClO4）的电导率最高，为0.35 S cm（-1），在苯甲腈溶剂介质中，PT（Et4NBF4）的导电率最高，为0.54 S cm（-1）。然后，以聚氨酯为绝缘基体制备了聚氨酯/聚噻吩（PU / PT）导电共聚物，并对其结构和性能进行了分析。通过循环伏安法（CV）研究了聚合物的电化学性能。通过四探针技术测量聚合物的电导率。从Gouy平衡磁性测量结果中发现所有具有导电机理的均聚物和二聚物。用FTIR光谱分析聚合物的结构性质。聚合物的表面分析通过扫描电子显微镜（SEM）得到澄清。聚合物膜的热分析通过差示扫描量热法（DSC）和热重分析（TGA）进行。从热分析中发现，在PT中，PT（Et4NBF4）和在共聚物PU / PT（Et4NBF4）中显示出最高的热稳定性，分别为191℃和210℃。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：23]

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