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Composite fiber of polyglycolide and polydioxanone, its preparation method, application and surgical suture

A technology of polydioxanone and polyglycolide, which is applied in the directions of surgery, fiber treatment, and conjugated synthetic polymer artificial filaments, etc., can solve the problems of restricting wide application and expensive fiber, and achieve the goal of operation Good resistance, good hand feeling, smooth surface effect

Active Publication Date: 2021-04-02
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the polyethylene lactide used in surgical sutures is difficult to be accepted by ordinary consumers clinically due to the high price of fibers, thus limiting its wide application

Method used

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  • Composite fiber of polyglycolide and polydioxanone, its preparation method, application and surgical suture
  • Composite fiber of polyglycolide and polydioxanone, its preparation method, application and surgical suture
  • Composite fiber of polyglycolide and polydioxanone, its preparation method, application and surgical suture

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preparation example Construction

[0059] See attached figure 2 , the preparation method of polyethylene lactide and polydioxanone composite fiber provided by the invention comprises the following steps:

[0060] Step 1: Obtain poly(ethylene-lactide) slices and polydioxanone slices respectively;

[0061] Step 2: Composite spinning for poly(ethylene lactide) slices and polydioxanone sheets, so that poly(lactide) is in the core layer of the composite fiber, and polydioxanone wraps polyethylene glycol The lactide forms the skin layer of the composite fiber, and the composite fiber of polyglycolide and polydioxanone is obtained.

[0062] Among them, the process of composite spinning for polyethylene lactide chips and polydioxanone chips includes:

[0063] Vacuum drying is carried out at 80° C. to 100° C., the vacuum degree of vacuum drying ranges from -0.08 MPa to 0.09 MPa, and the duration of vacuum drying ranges from 12 h to 16 h.

[0064] Wherein, in step 1, the method for obtaining polydioxanone slices comp...

Embodiment 1

[0094] The cross-sectional area ratio of the skin layer and the core layer (with PGLA as the core of the composite fiber and polydioxanone as the skin of the composite fiber) is 20:80, and the spare PGLA / polydioxanone are respectively Carry out vacuum drying, the drying temperature is 80° C., and the vacuum degree is −0.09 MPa. The value range of the vacuum drying duration is 12 hours. The composite fiber adopts a spinning-drawing one-step method, and the drawing ratio is 5 times. The monofilament fineness is 2.2dtex (50D / 24f). The spinning process conditions are: the temperature range of the core layer component is 220-240°C, the screw pressure is 9.8MPa, the spinning speed is 240m / min, the temperature range of the skin layer component is 140-170°C, the screw pressure is 8.0MPa, and the spinning The yarn speed is 240m / min, air cooling, and the side blowing rate is 3m / min, and the PGLA / polydioxanone composite fiber can be obtained.

[0095] The performance parameters of PGLA...

Embodiment 2～20

[0097]

[0098]

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Abstract

The invention discloses a PLGA and polydioxanone compound fiber, a preparation method, an application and a surgical suture. In the compound fiber, the PLGA fiber is a core layer of the compound fiber, and the polydioxanone is a surface layer of the compound fiber. The preparation method comprises the following steps: respectively obtaining slices of PLGA and slices of polydioxanone; carrying outcompound spinning on the slices of PLGA and the slices of polydioxanone, so that the PLGA is in the core layer of the compound fiber, and the polydioxanone wraps the PLGA to form the surface layer ofthe compound fiber to obtain the PLGA and polydioxanone compound fiber. The compound fiber can be used for the surgical suture. The surgical suture is prepared from the compound fiber. The tensile strength of the compound fiber ranges from 4.6 CN / dtex-5.0 CN / dtex, the elongation at break is 30%-40%, the requirements of surgical sutures can be met, and meanwhile, the cost is low.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a composite fiber of polyethylene lactide and polydioxanone, its preparation method, application and surgical suture. Background technique [0002] Polylactide, also known as polylactic acid, has a hydroxyl group and a carboxyl group in a single lactic acid molecule, multiple lactic acid molecules are together, -OH is dehydrated and condensed with -COOH of other molecules, and -COOH is dehydrated with -OH of other molecules Condensation, and just like that, they go hand in hand to form a polymer called polylactic acid, or polylactide. Polylactide is a polymer obtained by polymerization of lactic acid as the main raw material. The raw material source is sufficient and can be regenerated. The production process of polylactide is non-polluting, and the product can be biodegraded to realize the cycle in nature, so it is an ideal green polymer material. Polyethylene lactide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14C08G63/08C08G63/85D01D5/34A61L17/12A61L17/10
CPCA61L17/10A61L17/12C08G63/08C08G63/823D01D5/34D01F8/14
Inventor 刘伯林黄庆金剑
Owner CHINESE TEXTILE ACAD
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