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Production method of biodegradable composite fiber

A composite fiber, production method technology, applied in fiber processing, conjugated synthetic polymer rayon, medical science and other directions, can solve the problems of slow degradation rate and high crystallinity, achieve low cost, increase specific surface area and porosity , good biocompatibility

Active Publication Date: 2012-04-18
扬州森斯伯特保健用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although its hydrophilicity is stronger than that of PLA, its degradation rate is slower in vivo and in vitro, and its crystallinity is higher

Method used

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  • Production method of biodegradable composite fiber
  • Production method of biodegradable composite fiber
  • Production method of biodegradable composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Mix polycaprolactone and polylactic acid at a mass ratio of 50:50, dissolve in chloroform solvent, and disperse ultrasonically; then add two Methyl sulfoxide solvent is formulated into a solution with a mass concentration of solute (polycaprolactone+polylactic acid) of 8%, and then ultrasonically dispersed to prepare a transparent and uniform spinning solution.

[0030] (2) The spinning solution prepared in step (1) was introduced into the electrospinning device, the distance between the spinneret and the receiving plate was set to 15 cm, the power was turned on, and the voltage was adjusted to 20 kV to start spraying to prepare composite fibers.

[0031] Such as figure 1 As shown, the prepared fiber morphology under the optical microscope is relatively uniform, and there is no bead string defect.

Embodiment 2

[0033] (1) According to polycaprolactone: polylactic acid (mass ratio) = 100:0, 90:10, 70:30, 50:50, 30:70, 10:90, 0:100 mixed, respectively dissolved in trichloro In methane solvent, ultrasonic dispersion; Add dimethyl sulfoxide solvent according to dimethyl sulfoxide: chloroform=1: 4 (mass ratio) subsequently, make a series of solutes (polycaprolactone+polylactic acid) mass concentration be 8 % solution, ultrasonically dispersed to make a transparent and uniform spinning solution with seven ratios;

[0034] (2) Introduce each spinning solution prepared in step (1) into the electrospinning device, set the distance between the spinneret and the receiving plate to be 15cm, turn on the power, adjust the voltage to 24kV to start spraying, and prepare Seven kinds of composite fibers were produced.

[0035] figure 2 , 3 Field emission scanning electron micrographs of the as-prepared fibers, figure 2 Among them, from a to g, the mass ratios of polycaprolactone and polylactic a...

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Abstract

The invention discloses a biodegradable composite fiber and a production method thereof, and relates to the technical field of production of the composite fiber. Microfiber / nanofiber is prepared by the following steps of: dissolving polycaprolactone and polylactic acid in a complex solvent formed by trichloromethane and dimethyl sulfoxide; preparing transparent uniform spinning solution by ultrasonic dispersion; leading the spinning solution into an electrostatic spinning device; and preparing the microfiber / nanofiber with diameter of between 200 and 1,100nm by jetting. Because the polycaprolactone / polylactic acid microfiber / nanofiber prepared by a simple, convenient, direct and low-cost method has high complementarity in aspects such as mechanical property, degradation rate and the like,the method for compounding the microfiber and the nanofiber is an effective method for obtaining a novel biological material which has the degradation rate and the mechanical property between those of the two fibers.

Description

technical field [0001] The invention relates to the technical field of composite fiber production, in particular to a method for preparing composite fibers with good biocompatibility and biodegradability. Background technique [0002] The traditional fiber preparation technology can only prepare fibers with a diameter ranging from 5 to 500 μm. However, with the development of nanotechnology today, people have begun to pay attention to making fibers into nanoscale sizes. At present, electrospinning is the only technology that can directly and continuously prepare polymer micro / nanofibers, so it has received extensive attention from researchers. So far, nanofibers have been successfully prepared from a variety of polymers by electrospinning technology, such as polyvinyl alcohol, polyacrylonitrile, polyimide, nylon, etc. The relevant research has been deepening, but most of these materials are difficult to degrade or Recycling is difficult, and the environmental protection pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01D1/02D01D5/00A61L27/26A61L27/50A61L27/56
Inventor 吴德峰陆靓靓张明
Owner 扬州森斯伯特保健用品有限公司
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