Characterization of cobalt(II) chloride-modified condensation polyimide filmsThe effect of solvent extraction on the properties of cobalt(II) chloride-modified polyimide films was investigated. Solvent-cast films were prepared from solutions of cobalt chloride in poly(amide acid)/N,N-dimethylacetamide (DMAc) and were subsequently dried and cured in static air, forced air, or inert gas ovens with controlled humidity. The films were extracted by either of the three processes (1) soaking in a tray with distilled water at room temperature, (2) soxhlett extraction with distilled water, or (3) soxhell extraction with DMAc. Extraction with DMAc was found to remove both cobalt and chlorine from the films and to slightly increase bulk thermal stability and both surface resistivity and electrical resistivity.
Document ID
19890023970
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rancourt, J. D. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Taylor, L. T. (Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Chemistry And Materials (General)
Meeting Information
Meeting: Cross-Linked Polymers: Chemistry, Properties, and Applications