Rigid-Rod Polyimides Based on Noncoplanar 4,4‘-Biphenyldiamines: A Review of Polymer Properties vs Configuration of Diamines
X-ray crystal structures of three substituted 4,4‘-biphenyldiamines, namely, 2,2‘,6,6‘-tetramethylbenzidine (TMBZ), 2,2‘-dimethylbenzidine (DMBZ) and 2,2‘-bis(trifluoromethyl)benzidine (BFBZ), were determined. The torsional angles between the two phenyl rings for TMBZ, DMBZ, and BFBZ are φ = 83°, 75...
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Veröffentlicht in: | Macromolecules 1997-11, Vol.30 (23), p.7183-7190 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | X-ray crystal structures of three substituted 4,4‘-biphenyldiamines, namely, 2,2‘,6,6‘-tetramethylbenzidine (TMBZ), 2,2‘-dimethylbenzidine (DMBZ) and 2,2‘-bis(trifluoromethyl)benzidine (BFBZ), were determined. The torsional angles between the two phenyl rings for TMBZ, DMBZ, and BFBZ are φ = 83°, 75°, and 59°, respectively. A structure−property relationship between the three-dimensional configuration of diamine monomers and the corresponding polyimides is discussed. |
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ISSN: | 0024-9297 1520-5835 |
DOI: | 10.1021/ma970309b |