METHOD OF PRODUCING NANOFIBRES FROM ALIPHATIC COPOLYAMIDES Russian patent published in 2012 - IPC D01F6/80 B82B3/00 D01F6/60 B82B1/00 D01F6/78 C08L77/02 

FIELD: chemistry.

SUBSTANCE: solution with 15-30 wt % concentration of polyhexamethylene adipine amide and polyhexamethylene sebacinamide copolymer with ratio 60:40 wt % in an alcohol-water mixture with 45-97 vol. % ethanol content is obtained. The solution is filtered and deaerated. The solution is fed through a die hole-electrode in an electric field with strength E=1.5 10⁴-4.0 10⁵ V/m and distance between electrodes of 0.1-0.5 m. Nanofibres are deposited on an oppositely charged electrode with diameter d=50-4500 nm. The fibres form material having high porosity, vapour- and water-permeability, high hydrophilic behaviour and bioinertness.

EFFECT: obtained material can be used to make wound covers, filters for cleaning liquid and gaseous media, matrices for proliferation of stem cells.

11 dwg, 3 ex