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Chain Conformations Of Aromatic Polvimides And Their Ordering In Thin Films.

  • D. Y. Yoon (a1), W. Parrish (a1), L. E. Depero (a1) and M. Ree (a1)

Abstract

We have investigated the conformation – order relationships of four aromatic polyimides prepared by thermal imidization of the precursor poly(amic acids) in thin films. They are: (i) PMDA-4,4′-ODA polyimide from pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA) monomers; (ii) PMDA-PDA polyimide from PMDA and p-phenylene diamine (PDA); (iii) PMDA-Benzidine polyimide from PMDA and benzidine and (iv) BPDA-PDA polyirnide from biphenylene tetracarboxylicdianhydride (BPDA) and PDA. X-ray diffraction results and their analyses by molecular modeling show that all the four polyimides exhibit extended chain conformations in various smectic-type ordered structures that form monomer repeat layers but differ in the details of interchain packing. Furthermore, the polyimide chains are highly aligned along the film plane.

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1. Mittal, K.L., Polyirnides: Synthesis. Characterization, and Applications., Vol. I & II, Plenum, New York, 1984.
2. Flory, P.J., Advances in Polymer Science 59, 1 (1984).
3. Maier, W. and Saupe, A., Z. Naturforschg. 14a, 882 (1959); Z. Naturforschg. 15a, 287 (1960).
4. Yoon, D.Y. and Flory, P.J., Mat. Res. Soc. Syrnp. Proc. 134, 11 (1989).
5. Takahashi, N., Yoon, D.Y., and Parrish, W., Macromolecules 17, 2584 (1984).
6. Parrish, W., X-Ray Analvsis Papers, Centrex Publ. Co., Eindhaven, 1965.
7. Sherrer, P., Nachr. Göttinger Gesell., 98 (1918).
8. Ree, M., Yoon, D.Y., Depero, L.E., and Parrish, W., .J. Polym. Sci., Polym. Phys. Ed.. submitted.

Chain Conformations Of Aromatic Polvimides And Their Ordering In Thin Films.

  • D. Y. Yoon (a1), W. Parrish (a1), L. E. Depero (a1) and M. Ree (a1)

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