Effect of stiffness of symmetrical polyamidobenzimidazoles on their ability to undergo orientation stretch
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Fibre-forming polymers from a series of symmetrical polyamidobenzimidazoles having different equilibrium stiffnesses of the macromolecules have been synthesized; fibres based on them have been prepared.
It has been found that the effect of polymer stiffness on the properties of isotropic, unoriented films is slight.
The equilibrium stiffness of macromolecules considerably affects the ability of polymers to undergo orientation stretch, the mean-molecular orientation factor, and the elastic modulus of fibres.
KeywordsPolymer Organic Chemistry Elastic Modulus Macromolecule Orientation Factor
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