monomers tula russia poly n vinyl pyrrolidone with an average molecular weight of 30000 dal was purchased from a russian enterprise poly d l lactide co glycolide plga was dissolved in ethyl acetate to make a 20 w w solution with solution viscosity 1 2 poise solution a or a 10 w w solution with solution viscosity 0 5 poise solution b poly n vinyl pyrrolidone pvp was dissolved in ethanol making a 20 w w solution and mixed with the plga solution in ethyl acetate at pvp plga ratio of 20 80 w w that was used for the electrohydrodynamic spinning the plga pvp solution was filtered to remove mechanical and gel like impurities and was placed into a container 2 fig1 and spun into wound dressing materials in the form of microfiber mats which were collected on the surface of a rotating drum 5 or on a film positioned on the surface of a rotating drum 5 that is used as a substrate after the completion of the process the microfiber unwoven material was cut into squares and vacuum dried to remove the solvent residue the finished product was packed into a polyethylene laminated aluminum foil and sterilized by 2 5 mrad u03b3 radiation using a conventional procedure to measure the degree of absorbency 2 cm 2 strips 0 5 u00d7 4 cm of the microfiber mat were cut and weighed dry weight or dw the end of the narrow side 0 5 cm side of the strip was immersed in water or blood and soaked for 10 15 min the liquid was drained and the strip was weighed wet weight or.