Heterochain polymers Communication 1. effect of n-substituents on the properties of polyamides derived from 4,4′-methylenedianiline View Full Text


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Article Info

DATE

1957-05

AUTHORS

V. V. Korshak, T. M. Frunze, E. A. Krasnyanskaya

ABSTRACT

Summary Polyamides were prepared by condensation of a mixture of 4,4'-methylenedianiline and 4,4'-methylenebis [N-alkylaniline], on the one hand, with adipic, azelaic, or sebacic acid, on the other, in order to give products in which amide hydrogen was replaced to various extents by methyl or ethyl radicals. It was shown that with increase in the extent of the replacement of Amide hydrogen by methyl or ethyl, the softening and melting points of the polymer fell. It was shown that the melting point fell also as the molecular weight of the dicarboxylic acid increased. In the case of azelaic acid the “odd-even” factor did not have its usual effect. It was shown that the properties of polyamides derived from aromatic diamines are determined primarily by the extent of hydrogen bonding between amide groupings, whereas interaction between aromatic nuclei is of secondary importance. More... »

PAGES

635-639

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf01169282

DOI

http://dx.doi.org/10.1007/bf01169282

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1015569732


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