- Influence of the molecular structure of H complexes of dialkyl dihydrogen benzophenonetetracarboxylates with aromatic diamines on the viscosity of their melts
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The possibility of preparing from dialkyl dihydrogen 3,3′,4,4′- benzophenonetetracarboxylates and 4,4′-diaminodiphenylmethane or 4,4′-diaminodiphenyl ether H complexes of both amorphous and crystalline structures was elucidated. Methods were proposed for disordering the supramolecular structure of the H complexes, which is technologically essential for reducing the melt viscosity when preparing polyimide carbon-filled plastics and foamed composites.
- Artem'eva,Baklagina,Kukarkina,Kostereva,Samarin,Lavrent'ev,Panov,Kudryavtsev
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- STUDY OF THE STRUCTURE OF SOLUTIONS OF THE H-COMPLEXES OF DIESTERS OF TETRACARBOXYLIC ACIDS WITH DIAMINES BY THE LIGHT SCATTERING METHOD. 1. H-COMPLEX OF THE DIMETHYL ESTER OF BENZOPHENONETETRACARBOXYLIC ACID WITH HEXAMETHYLENEDIAMINE
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Conclusions about structure formation in solutions of the H-complexes of benzophenonetetracarboxylic acid with hexamethylenediamine have been drawn from the angular dependence of the intensity of scattered polarized light.The calculated statistical structural parameters show that the H-complexes form dipentameric associations.At high concentrations of the complexes in aqueous-methanolic solution the supermolecular structure is disrupted, while in the pure alcohol the reverse process is observed.
- Chupans, P. I.,Kallistov, O. V.,Artem'eva, V. N.,Silinskaya, I. G.,Mel'nikova, G. G.,et. al.
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p. 1180 - 1184
(2007/10/02)
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