Homogeneous polyimide films with increased bis(N,N'-disalicylidene-1,2-phenylenediaminato)zirconium(IV) content

Show full item record

Title: Homogeneous polyimide films with increased bis(N,N'-disalicylidene-1,2-phenylenediaminato)zirconium(IV) content
Author: He, Liling; Wagner, Shawn; Illingsworth, Marvin; Jensen, Andrew; Yap, Glenn; Rheingold, Arnold
Abstract: To increase the concentration of inorganic component in polyimide films and enhance the materials' resistance to atomic oxygen, the complex (4-amino-N,N'-disalicylidene-1,2-phenylenediaminato)(N,N'-disalicylidene-1,2-phenylenediaminato)zirconium(IV), Zr(adsp)(dsp), was synthesized and allowed to react with poly(maleic anhydride) (PMA). The resulting Zr-PMA pendent polymer was mixed with a commercially available polyamic acid of pyromellitic dianhydride and 4,4'-oxydianiline (PMDA-ODA) in various proportions in NMP. Films were then cast onto glass substrates, and thermally imidized. The new mixed ligand complex and the Zr-PMA polymer were characterized by TLC, IR, 1H NMR, and elemental analysis, along with X-ray crystallography for the former and TGA for the latter. The imidized films of the Zr-PMA polymer blended with PMDA-ODA polyimide were studied by optical examination of multilayer film samples for crack formation, and SEM photography before and after atomic oxygen erosion in a plasma asher. The upper limit of Zr complex incorporation onto prebaked poly(maleic anhydride) was approximately 24% (mol of Zr/mol of repeat units). The upper limit of zirconium complex concentration for the Zr-PMA/PMDA-ODA blends, above which films crack upon imidization, was 8 mol %, compared to 4 mol % for mixtures of Zr(dsp)2 in PMDA-ODA polyimide.
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/2166
Publishers URL: http://dx.doi.org/10.1021/cm970356i
Date: 1997-12

Files in this item

Files Size Format View

An open access version of this file is not available. Check "Publisher URL" field for access

This item appears in the following Collection(s)

Show full item record

Search RIT DML

Advanced Search