Experimental and Theoretical Studies of Hydrolytic Stability of Transparent Polyimide Films

I. A. Novakov,B. S. Orlinson,D. V. Zav’yalov,E. N. Savel’ev,E. A. Alykova,A. M. Pichugin,M. A. Nakhod,A. O. Panov,M. N. Kovaleva, A. D. Dubinina, I. A. Slobodkin

Russian chemical bulletin（2023）

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Abstract
The hydrolytic stability of polyimide films (PI) in a 0.9% sodium chloride solution in the temperature range of existing biological objects was studied. The kinetic parameters of hydrolysis of PI films were calculated. It was established that the hydrolysis rate constant of an adamantane-containing film was significantly lower than that of an industrial Kapton film. The dielectric constant after hydrolysis was determined. It was shown that the dielectric properties of the adamantane-containing polymer remained unchanged under the hydrolysis conditions.
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Key words
polyimides,biosensors,Kapton,IR-FT spectroscopy,polyimide films,hydrolytic stability,adamantane-containing polyimides
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