ABSTRACT
Abstract Contamination is a constant concern for many space-grade materials. Therefore, the ability for materials to sense and absorb molecular contamination is greatly needed. A polyimide has been created that both senses and absorbs moisture, a contaminant detrimental to optical space systems. The material was prepared by incorporating cobalt(II) chloride, a well-known moisture absorber and sensor, into polyimide, with the intent of retaining the original properties of both the metal and the polymer. The final material was found to be fully cured, retain the metal without any leeching, and was thermally stable. Further, the material underwent a visible color change when exposed to moisture. The moisture absorption could also be observed through infrared spectroscopy. Finally, the material could be easily regenerated through drying, such as exposing it to nitrogen.
