Characterization of polyimide films exposed at the mir orbital space station

Polyimide films remained unchanged upon an exposure at the Mir orbital space station under quartz plates, which protected them from bombardment by atomic oxygen with an energy of ∼5 eV and transmitted solar radiation with λ ≥ 200 nm. The films underwent considerable degradation under the simultaneou...

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Bibliographic Details
Published in:High energy chemistry 2014, Vol.48 (1), p.1-4
Main Authors: Milinchuk, V. K., Klinshpont, E. R., Anan’eva, O. A., Pasevich, O. F.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Radiation Chemistry
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Summary:Polyimide films remained unchanged upon an exposure at the Mir orbital space station under quartz plates, which protected them from bombardment by atomic oxygen with an energy of ∼5 eV and transmitted solar radiation with λ ≥ 200 nm. The films underwent considerable degradation under the simultaneous action of atomic oxygen and solar radiation. The large weight loss and the mechanical destruction of one-sidedly aluminized polyimide films were caused by the participation of an aluminum coating in the polyimide destruction process. The accelerated degradation of the aluminum-polyimide composition can be explained by the photoeffect mechanism, the scavenging of photoelectrons emitted from aluminum by imide and benzene groups, and the formation and photochemical conversion of light-sensitive centers.
ISSN:0018-1439
1608-3148
DOI:10.1134/S001814391401010X