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Molecular parameters, polyimide

Tager, A. A. Kolmakova, L. K. Solubility parameter, its evaluation methods, connection with polymers solubility. High-Molecular Compounds. A, 1980, 22(3), 483 96. Lee, H. -R. Lee, Y. -D. Solubility behavior of an organic soluble polyimide. J. Appl. [Pg.240]

In a previous paper (18), we discussed the relationships between the NMR chemical shifts and the rate constants of acylation (k) as well as such electronic-property-related parameters as ionization potential (IP), electronic affinity (EA), and molecular orbital energy for a series of aromatic diamines and aromatic tetracarboxylic dianhydrides. The usefulness of NMR chemical shifts for estimating the reactivity of polyimide monomers was first reported by Okude et al. (19). We have revealed that the chemical shifts of the amino group of diamines (d ) depend monotonically on the logarithm of k (log k) and on IP. [Pg.307]

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Molecular parameters

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