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High-elasticity PHA porous fiber material and preparing method thereof

A polyhydroxyalkanoate and porous fiber technology, applied in fiber treatment, spinning solution preparation, non-woven fabrics, etc., can solve the problems of low tensile strength and elongation rate, and no research on the influence of tensile mechanical properties , to achieve the effect of fine fiber diameter, improved electrospinning yield, and high electrospinning yield

Inactive Publication Date: 2015-03-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these research results show that the tensile strength and elongation ratio are relatively low, and there is no systematic investigation of the effect of solvent on the tensile mechanical properties of the prepared materials.

Method used

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  • High-elasticity PHA porous fiber material and preparing method thereof
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  • High-elasticity PHA porous fiber material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 4g of P3HB4HB, slowly add the weighed P3HB4HB into 46g of mixed solvent of chloroform and chloroform, the mass fraction of acetone is 1%, under the condition of magnetic stirring for about 4 hours, the polymer concentration can be obtained as 8wt %The solution. Then transfer the polymer solution to a 10ml glass syringe and place it in an electrospinning device. By adjusting the voltage to 10kV, the extrusion rate is 3ml / h, and the distance from the needle to the receiving device is 14cm, fibers can be obtained under this condition Fiber membrane with uniform diameter distribution and good shape.

[0026] See attached figure 1 (a), the results of the scanning electron microscope (SEM) of the sample prepared by the technical scheme of this embodiment show that the prepared fibrous scaffold has a good shape and a uniform diameter distribution (5.4±0.5 μm).

Embodiment 2

[0028] Weigh 4g of P3HB4HB, and slowly add the weighed P3HB4HB into the mixed solvent prepared in advance, and the mass fractions of acetone are 25%, 35% and 50% respectively. Under the condition of magnetic stirring for about 4 hours, a solution with a polymer concentration of 8wt% can be obtained. Then transfer the polymer solution to a 10ml glass syringe and place it in an electrospinning device. By adjusting the voltage to 10kV, the extrusion rate is 3ml / h, and the distance from the needle to the receiving device is 14cm, fibers can be obtained under this condition Fiber membrane with uniform diameter distribution and good shape.

[0029] See attached figure 1 (b-d), the scanning electron microscope (SEM) results of the sample prepared by the technical scheme of this embodiment show that the prepared fiber scaffold has a good shape and a uniform diameter distribution, and the fiber diameter decreases with the increase of the mass fraction of acetone. When the mass fracti...

Embodiment 3

[0033] Weigh 4g of P3HB4HB, slowly add the weighed P3HB4HB into 46g of acetone solvent, and under the condition of magnetic stirring for about 4 hours, a solution with a polymer concentration of 8wt% can be obtained. Then transfer the polymer solution to a 10ml glass syringe and place it in an electrospinning device. By adjusting the voltage to 10kV, the extrusion rate is 3ml / h, and the distance from the needle to the receiving device is 14cm. Under this condition, the morphology cannot be obtained. good fiber.

[0034] See attached figure 1 (e), the result of the scanning electron microscope (SEM) of the sample prepared by the technical scheme of this embodiment shows that the prepared fiber contains a large number of beads and has poor fiber formation.

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Abstract

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.

Description

technical field [0001] The invention relates to a highly elastic polyhydroxyalkanoate porous fiber material and a preparation method thereof, and belongs to the technical field of functional fiber materials and its preparation. Background technique [0002] Polyhydroxyalkanoate (PHAs) is a general term for a class of energy and carbon source storage substances synthesized by microorganisms under the conditions of excess carbon source and lack of certain nutrients such as nitrogen or phosphorus. Since PHAs have different monomer structures, there are many types, including poly-3-hydroxybutyrate (PHB), poly-3-hydroxybutyric acid and 3-hydroxyvaleric acid copolymer (PHBV), poly-3-hydroxybutyrate Acid and 4-hydroxybutyric acid copolymer (P3HB4HB), poly 3-hydroxybutyric acid and 3-hydroxyhexanoic acid copolymer (PHBHHx), etc. Because of their diversity and good degradability and biocompatibility, PHAs are used as medical materials in sutures, bandages, cardiovascular patches, or...

Claims

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Application Information

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IPC IPC(8): D04H1/728D01D5/00D01D1/02
CPCD04H1/435D04H1/728D10B2401/061D10B2401/063D10B2509/00
Inventor 高强高春霞葛明桥
Owner JIANGNAN UNIV
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