Abstract
The objective of this thesis is to improve the atomic oxygen resistance of polyimide Kapton by incorporating zirconium components. Toward this end, zirconium complexes/polyimide "composites",. zirconium-containing poly(maleimide)/ polyimide "blends" and polyimide polymers with zirconium complexes as "pendants" have been investigated. Tetra(acetylacetonato)zirconium(IV), Zr(acac)4_ has been identified as the best zirconium-containing atomic oxygen resistance component for polyimide composites with good film uniformity, flexibility and tensile strength. A 24-layer 10% Zr(acac)4/PI (mol/mol) composite film shows a 20 fold improvement of atomic oxygen resistance over pure polyimide. However, a 10% by mole upper limit of Zr(acac)4 in PI was encountered, above which films become brittle and crack upon imidization. Some initial phase separation in the 10% by mole film was revealed by Scanning Electronic Microscopy (SEM). In order to increase the upper limit of inorganic component, (4-amino-N,N'- disalicylidene- 1,2-1 phenylenediaminato)(,2-phenylenediaminato) zirconium(IV), Zr(adsp)(dsp), was synthesized and bonded to poly(maleic anhydride). The pendant polymer was then mixed with polyamic acid of Kapton. The upper limit was moved up to 8% by mole from 4% by mole for Zr(dsp)2. To further increase the zirconium incorporation ratio, Zr(adsp)(dsp) was directly bonded to a Kapton-like terpolymer and 30% by mole has been achieved. Further research needs to be done to improve the film quality made from this terpolymer. *For correct numerical representations, refer to file
Library of Congress Subject Headings
Kapton (Trademark)--Effect of space environment on; Polyimides--Additives--Research; Polyimides--Effect of space environment on
Publication Date
6-1-1996
Document Type
Thesis
Department, Program, or Center
School of Chemistry and Materials Science (COS)
Advisor
Illingsworth, M.
Recommended Citation
He, Liling, "Atomic oxygen resitant zirconium containing polyimides" (1996). Thesis. Rochester Institute of Technology. Accessed from
https://repository.rit.edu/theses/3725
Campus
RIT – Main Campus
Comments
Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: TP1180.P66 H4 1996