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Composite fiber of polyethylene lactide and polycaprolactone, its preparation method, use and surgical suture

A technology of polylactide and polycaprolactone, which is applied in the direction of surgery, fiber treatment, conjugated synthetic polymer artificial filament, etc., can solve the problems of restricting wide application and expensive microscopic price of polylactide , to achieve the effect of good hand feeling and increased flexibility

Active Publication Date: 2019-10-18
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 for biodegradable materials is difficult to be accepted by ordinary consumers clinically due to its expensive microscopic price. Therefore, its wide application is limited.

Method used

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  • Composite fiber of polyethylene lactide and polycaprolactone, its preparation method, use and surgical suture
  • Composite fiber of polyethylene lactide and polycaprolactone, its preparation method, use and surgical suture
  • Composite fiber of polyethylene lactide and polycaprolactone, its preparation method, use and surgical suture

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preparation example Construction

[0058] See attached figure 2 , the preparation method of polyethylene lactide and polycaprolactone composite fiber provided by the invention comprises the following steps:

[0059] Step 1: Obtain slices of polyethylene lactide and slices of polycaprolactone respectively;

[0060] Step 2: Carry out composite spinning for polylactide slices and polycaprolactone slices, so that polylactide is in the core layer of the composite fiber, and polycaprolactone wraps polylactide to form the core layer of the composite fiber Cortex, obtain polyethylene lactide and polycaprolactone composite fiber.

[0061] Among them, the process of composite spinning for polyethylene lactide chips and polycaprolactone chips includes:

[0062] Vacuum drying is carried out under the condition of 80° C. to 100° C., and the vacuum degree of vacuum drying ranges from -0.08 MPa to 0.09 MPa.

[0063] Wherein, in step 1, the method for obtaining polycaprolactone slices comprises the following steps:

[006...

Embodiment 1

[0093] The cross-sectional area ratio of the skin layer to the core layer (with PGLA as the core of the composite fiber and PCL as the skin of the composite fiber) is 20:80, and the spare PGLA / PCL are vacuum-dried separately at a drying temperature of 80°C. Vacuum degree-0.09MPa. The composite fiber described adopts spinning-stretching one-step method, and the draw 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 150-180°C, the screw pressure is 8.0MPa, the spinning The yarn speed is 240m / min, air cooling, and the side blowing rate is 3m / min, and the PGLA / PCL composite fiber can be obtained.

[0094] The performance parameters of PGLA / PCL composite fiber are: the tensile strength reaches 4.5CN / dtex, the elongation at break is 27%, the hand feeling...

Embodiment 2～20

[0096]

[0097]

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PUM

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Abstract

The invention discloses a poly lactate geycollic acid and polycaprolactone complex fiber, a preparation method and application thereof, and an operation suture line. The complex fiber comprises a poly lactate geycollic acid fiber and a polycaprolactone complex fiber, wherein the poly lactate geycollic acid fiber is used as a core layer of the complex fiber, and the polycaprolactone fiber is used as a skin layer of the complex fiber. The preparation method comprises the following steps: obtaining poly lactate geycollic acid slices and polycaprolactone slices respectively; and performing composite spinning on the poly lactate geycollic acid slices and the polycaprolactone slices, wherein the poly lactate geycollic acid is used as the core layer, and the polycaprolactone covers the poly lactate geycollic acid to form the skin layer of the complex fiber so as to obtain the poly lactate geycollic acid and polycaprolactone complex fiber. The composite fiber can be used for the operation suture line. The operation suture line is prepared from the complex fiber. The complex fiber can not only alleviate the characteristic of easy degradation of the poly lactate geycollic acid fiber, but also can enhance the flexibility of the poly lactate geycollic acid fiber.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a composite fiber of polyethylene lactide and polycaprolactone, its preparation method, application and surgical suture. Background technique [0002] 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 is obtained by copolymerization of glycolide and lactide in different proportions. It has good biocompatibility, no resistance to the human body and good degradability. The degradation product is CO 2 and H 2 O, it is especially suitable for suturing wounds in the body, such as liver, spleen, gastrointestinal anastomosis, obstetrics and gynecology, fascial suture and plastic surgery, ophthalmology, microsurgery and general surgery, etc. Polycaprolactone is formed by ring-opening polymerization of ε-caprolactone under the condition of meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14A61L17/06A61L17/10D01D5/34D02G3/44
Inventor 刘伯林黄庆金剑
Owner CHINESE TEXTILE ACAD
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