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Porous fiber, porous fiber structure and method for production thereof

A technology of porous fibers and structures, applied in the field of porous fibers, can solve the problems of inability to control the hydrophilicity of fiber structures and complicated operations.

Inactive Publication Date: 2008-06-11
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, this method requires water immersion treatment, and the operation is complicated
In addition, the finally obtained porous fiber substantially only contains a hydrophobic polymer, and the hydrophilicity of the fiber structure cannot be controlled.

Method used

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  • Porous fiber, porous fiber structure and method for production thereof
  • Porous fiber, porous fiber structure and method for production thereof
  • Porous fiber, porous fiber structure and method for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] 1 part by weight of polylactic acid (Shimadzu Corporation: trade name "Lacty 9031"), 1 part by weight of ethylene glycol (manufactured by Wako Pure Chemical Industries, Ltd., reagent special grade), 8 parts by weight of dichloromethane (Wako Pure Pharmaceutical Co., Ltd., reagent special grade) were mixed at room temperature (25° C.) to obtain a slightly cloudy solution.

[0101] use figure 2 In the apparatus shown, the solution was sprayed toward the fibrous material collecting electrode for 5 minutes. The inner diameter of the discharge nozzle was 0.8 mm, the voltage was 12 kV, and the distance from the discharge nozzle to the fibrous substance collecting electrode was 10 cm. The resulting fibrous structure was measured with a scanning electron microscope (“S-2400” manufactured by Hitachi, Ltd.), and the average fiber diameter was 3 μm, and fibers with a fiber diameter of 20 μm or more were not observed. Fibers with a fiber length of less than 20 μm were also not o...

Embodiment 2

[0104] The operation similar to Example 1 was performed except having used 1 weight part of diethylene glycol (Wako Pure Chemical Industries, Ltd. make, reagent special grade) instead of ethylene glycol. The average fiber diameter was 4 μm, and fibers with a fiber diameter of 20 μm or more were not observed. Fibers with a fiber length of less than 20 μm were also not observed. The porosity was about 15%, and the diethylene glycol content in the fibrous structure was 47.9% by weight. The scanning electron micrographs of the surface of the fiber structure and the fiber section are as follows: Figure 5 and Figure 6 shown.

Embodiment 3

[0106] In Example 1, except having used 1 weight part of triethylene glycol (made by Wako Pure Chemical Industries, Ltd., reagent grade 1) instead of ethylene glycol, the same operation was performed. The average fiber diameter was 3 μm, and fibers with a fiber diameter of 20 μm or more were not observed. Fibers with a fiber length of less than 20 μm were also not observed. The porosity is about 15%, and the triethylene glycol content in the fiber structure is 46.2% by weight. The scanning electron micrographs of the surface of the fiber structure and the fiber section are as follows: Figure 7 and Figure 8 shown.

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Abstract

The invention discloses porous fiber, a structural body of the porous fiber and a preparation method thereof. The invention provides porous fiber and a structural body of the fiber which are suitable for being taken as cell culture media in the regenerative medical field, have large surface areas and large pores, and can control the hydrophilicity thereof by a manufacturing method of the structural body of the fiber which comprises: a step of dissolving a polymer which can be dissolved in hydrophobic solvent and an organic compound provided with a plurality of hydroxide radicals into hydrophobic solvent to prepare solution; a step of spinning the solution through an electrostatic spinning method; and a step of obtaining the structural body of the fiber which is accumulated on a trapping plaque.

Description

technical field [0001] The present invention relates to a porous fiber which can be formed without a coagulation solution, a fiber structure containing the porous fiber and a preparation method thereof. [0002] More specifically, the present invention relates to a porous fiber, a fiber structure, and a method for preparing the same mainly composed of a polymer soluble in a hydrophobic solvent and an organic compound containing a plurality of hydroxyl groups. Background technique [0003] In the field of regenerative medicine, porous bodies are often used as substrates (scaffolds) for cell culture. As known porous materials, there are freeze-dried absorbent organic substances, foams, and fibrous structures (see, for example, Non-Patent Document 1). These porous bodies must have affinity with cells, biodegradability, and safety, and polyglycolic acid used as surgical sutures has excellent biocompatibility, biodegradability, and safety. , the feasibility of using a fiber str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/00D01F6/56D01F6/92D04H3/00D04H1/728
Inventor 三好孝则小村伸弥峰松宏昌
Owner TEIJIN LTD