Abstract:

In order to develop a copper ion nanlfiber membrane used for dressings, polyacrylonitrile (PAN) with anhydrous copper sulfate (CuSO4) composite nanofiberus membrane was prepared by electrospinning. The influence of spinning solution mass fraction, viscosity and conductivity on the spinning process and fiber appearance morphology were discussed. The elements and particle size distribution test were carried out. The results show that copper ion exists in the nanofiber membrane. With the set spinning parameters, when the amount of polyacrylonitrile in the spinning solution increases, the solution viscosity increases and the diameter of the fiber becomesat thicker. When the amount of anhydrous copper sulfate in the spinning solution increases, the solution conductivity increases, the diameter of the fiber increases, and the fiber fineness and beading tend to appear. When the spinning solution mass ratio of PAN to CuSO4 is 8：3, the appearance of the fiber is the best, and the diameter is about 300 nm.

Key words: electrostatic spinning, polyacrylonitrile, copper sulfate, nanofiber membrane, medical dressing