Structural transformations in fibers of low-crystalline poly(hydroxyalkanoates) upon their deformation

Fibers of random poly(hydroxyalkanoate)-based copolymers with a low crystallinity are characterized by a low elastic modulus, high elongation at break (greater than 2500%), and excellent strain recovery. Fiber drawing is accompanied by formation of a pseudohexagonal mesophase and a nonmonotonic variation in the degree of crystallite orientation.