Graft copolymers of polycaproamide with polyimide based on fluorene dianiline and 3,3′,4,4′-tetracarboxydiphenyloxide: Microstructure and properties

It is established that graft copolymers of polycaproamide with 3–5 wt % of polyimide exhibit a rubber-like elasticity region above the polycaproamide melting temperature. Polycaproamide modification with polyimide increases the polymer thermal resistance, glass-transition temperature, and impact strength. Scanning electron microscopy revealed that the supramolecular organization of polycaproamide is similar to that of its copolymers with polyimide but differs in the spherulite size.