Abstract
Novel polyimides based on aromatic dianhyride and various hexahydrotriazine monomers were synthesized via two-stage solution polycondensation method. The resulting polyimides were characterized by solubility, viscosity, density, spectroscopic and thermal analysis methods. The results showed that polyimides soluble in polar solvents and had inherent viscosities ranging from 1.92 to 2.32 dL/g. The glass transition temperatures were 315 and 344 ○C, and the 10% weight loss temperatures were above 604 and 628 ○C. Then, polyimide-modified electrodes were prepared for the selective determination of hydrogen peroxide. The electrochemical behavior of the resulting polyimide film electrodes to the electroactive and non-electroactive species such as ascorbic acid, oxalic acid, hydrogen peroxide, lactose, sucrose and urea was examined by CV, DPV and TB techniques. From the obtained findings, it was shown that polyimide-coated electrode (PI-2) was only permitted to hydrogen peroxide among the species examined. As a result, it is claimed that polyimide electrode could be used as a selective membrane for hydrogen peroxide.
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Ekinci, E., Emre, F.B., Köytepe, S. et al. Preparation, Characterization and H2O2 Selectivity of Hyperbranched Polyimides Containing Triazine. J Polym Res 12, 205–210 (2005). https://doi.org/10.1007/s10965-004-1869-8
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DOI: https://doi.org/10.1007/s10965-004-1869-8