Correlation of chain configurations, structure and mechanical properties of fibres of polypyromellitimide series

Results are given of investigating the structure and mechanical properties of a polyimide series prepared using the dianhydride of pyromellitic acid and diamines characterized by chemical structure. It was found that mechanical properties of fibres of this series depend on the ability of macromolecu...

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Bibliographic Details
Published in:Polymer science USSR 1976, Vol.18 (3), p.807-814
Main Authors: Korzhavin, L.N., Prokopchuk, N.R., Baklagina, Yu.G., Florinskii, F.S., Yefanova, N.V., Dubnova, A.M., Frenkel', S.Ya, Koton, M.M.
Format: Article
Language:English
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Summary:Results are given of investigating the structure and mechanical properties of a polyimide series prepared using the dianhydride of pyromellitic acid and diamines characterized by chemical structure. It was found that mechanical properties of fibres of this series depend on the ability of macromolecules to form ordered structures. Polyimides with low elasticity moduli do not crystallize during heat treatment of fibres. It was shown that to obtain ordered structures in the fibre, it is essential to consider the ratio of the form and cross sectional dimension of diamine and dianhydride components of the chain and bear in mind that the pyromellitimide fragment is the “initiator” of intermolecular packing of macromolecules of this series.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(76)90286-0