The invention relates to a high-elasticity PHA
porous fiber material and a preparing method of the high-elasticity PHA
porous fiber material. The method is characterized by comprising the steps that (1), PHA (P3HB4HB, 10-18 mol%4HB) is added into a mixed
solvent of
chloroform and
acetone under the condition of stirring, and a
mixed solution is obtained through stirring; (2), the temperature of the
mixed solution is risen to 50 DEG C-80 DEG C under the condition of stirring, and through sufficiently stirring the
mixed solution for 5-8 minutes, a P3HB4HB electrostatic
spinning solution evenly dissolved is obtained, wherein the concentration of
polymer is 6 wt%-12 wt%; (3), the P3HB4HB
spinning solution is transferred into a
glass syringe, then the
glass syringe where the P3HB4HB
spinning solution is contained is fixed to an electrostatic spinning device for electrostatic spinning, collected fibrous membranes are dried for 6-12 hours under a vacuum condition at the temperature of 40 DEG C-60 DEG C, and the high-elasticity P3HB4HB
porous fiber membrane is obtained through preparation, wherein the elongation at break can reach above 500%. The preparing process is simple, controllable and efficient, biological degradability and biological compatibility are good, the
diameter and elongation
mechanical property of fibers are adjustable within a certain range, and the high-elasticity PHA porous
fiber material has the good elasticity and the high elongation at break.