ИСТИНА

In the last decade, the special interest in biodegradable polymers has increased significantly due to the possibility of their production from renewable resources, for example, plant raw materials. One of the promising applications of biodegradable polyesters is the possibility of their use as the fibers and threads for suture materials, and also as the basis for the production of functional textile and nonwoven materials. Structural-mechanical modification by the mechanism of solvent crazing (or envinronmental) is one of the effective methods for obtaining functional fibrous materials. Plastic deformation of polymer fibers in the presence of liquid adsorption active media (AAM) leads to the formation of oriented and dispersed polymer fibrils separated by nanovoids. During crazing the pores of 5–30 nm in size develops, and they are filled with the surrounding medium. If AAM contains nonvolatile additives, they are imbibed and remain inside the fiber after evaporation of the solvent. So, solvent crazing leads to a modification of the fiber bulk, and the porosity generated by fibrillation of the polymer during the uniaxial deformation provides easy access to the additives.