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Method used for enhancing mechanical properties of nanofiber membrane

A nanofiber membrane and mechanics technology, applied in fiber processing, textile and papermaking, single-component polyester rayon, etc., can solve the problems of low mechanical properties of electrospinning nanofiber membrane, achieve cell non-toxicity, preparation Simple method, convenient operation effect

Inactive Publication Date: 2015-09-09
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the above-mentioned electrospun nanofibrous membranes are still relatively low.

Method used

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  • Method used for enhancing mechanical properties of nanofiber membrane
  • Method used for enhancing mechanical properties of nanofiber membrane
  • Method used for enhancing mechanical properties of nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare a mixed cross-linking solvent of chloroform and ethanol with a volume ratio of 1:6, place the nanofiber membrane in a closed glass tube with an air inlet and outlet, and carry the mixed vaporized solvent into the cross-linking from port B when nitrogen passes through the cross-linking solvent Device, discharge from port C, flow rate 100ml / min, time 10s. The tensile strength is 4.36±0.52MPa, and the elongation at break is 91.5±20.31%.

Embodiment 2

[0025] Prepare a mixed cross-linking solvent of chloroform and ethanol with a volume ratio of 1:1, place the nanofiber membrane in a closed glass tube with an air inlet and outlet, and carry the mixed vaporized solvent into the cross-linking from port B when nitrogen passes through the cross-linking solvent device, discharge from port C. The flow rate is 100ml / min, and the time is 15s. The tensile strength is 3.98±0.68MPa, and the elongation at break is 96.0±19.78%.

Embodiment 3

[0027] Prepare a mixed cross-linking solvent of chloroform and ethanol with a volume ratio of 6:1, place the nanofiber membrane in a closed glass tube with an air inlet and outlet, and carry the mixed vaporized solvent into the cross-linking from port B when nitrogen passes through the cross-linking solvent device, discharge from port C. The flow rate is 100ml / min, and the time is 20s. The tensile strength is 3.92±0.77MPa, and the elongation at break is 115.0±21.21%.

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Abstract

The invention relates to a method used for enhancing mechanical properties of electrospun poly lactic-glycolic acid (PLGA) copolymer nanofiber membrane via solvent evaporation crosslinking. PLGA nanofiber membrane is an important bioresorbable guided bone regeneration material, and mechanical properties of the PLGA nanofiber membrane are poor. According to solvent evaporation crosslinking, flow gas is taken as a carrier gas to carry a vaporized mixed crosslinking solvent to pass through nanofiber membrane; the solvent is absorbed by PLGA nanofiber membrane; and dissolving crosslinking is induced at fiber intersection points, so that fiber membrane mechanical properties are improved. The method is simple; operation is convenient; the mechanical properties of nanofiber membrane can be enhanced effectively; and the obtained nanofiber membrane is non-toxic to cells.

Description

technical field [0001] The invention relates to a method for enhancing the mechanical properties of nanofiber membranes by solvent vaporization and crosslinking. Background technique [0002] Electrospinning is fast and efficient, and the equipment is simple and easy to operate. It can be used to prepare complex, suture-free scaffolds, and it is easy to control the chemical composition and physical properties. It is suitable for mixed spinning of various polymer materials, and soluble particles such as drugs and bacteria can also be mixed into it for electrospinning, thus endowing the fiber scaffold with different characteristics, such as strength, porosity, surface function, etc. The scaffold prepared by electrospinning has the advantages of high porosity, high fineness, large specific surface area, and good uniformity. It can imitate the natural extracellular matrix at the nanoscale and promote cell migration and proliferation. A study compared the proliferation of cells ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/08D06M13/144D01F6/92D06M101/32
Inventor 宋晓峰李浩天宋平
Owner CHANGCHUN UNIV OF TECH