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Processing technology and application of hydrophilic polylactic acid fibers

A polylactic acid fiber and processing technology technology, applied in fiber type, fiber processing, medical science and other directions, can solve the problems of complex cell affinity process, decreased mechanical strength, lack of comfort on the surface of PLA tissue engineering materials, etc., to improve Biocompatibility, Surface Contact Angle Reduction, Low Cost Effects

Active Publication Date: 2021-06-15
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But PLA fiber has two significant disadvantages: one is that it is not resistant to high temperature, and its mechanical strength drops sharply after high temperature treatment; , lack of comfort
[0005] In summary, there are bottlenecks such as complicated process and unsatisfactory effect in the existing technology in improving the surface cell affinity of PLA tissue engineering materials, which need to be solved urgently

Method used

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  • Processing technology and application of hydrophilic polylactic acid fibers
  • Processing technology and application of hydrophilic polylactic acid fibers
  • Processing technology and application of hydrophilic polylactic acid fibers

Examples

Experimental program
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preparation example Construction

[0031] Preparation of ChCl-OA deep eutectic solvent: Accurately weigh choline chloride and oxalic acid according to the ratio of substances to 1:1-1.5, add them to the Erlenmeyer flask in turn, put in a magnetic stirrer, and place in a constant temperature magnetic On a stirrer, stir and dissolve at 90-100°C until the system is completely dissolved to a transparent state, and then continue to stir for 0.5-1.5h to prepare ChCl-OA DES for later use.

[0032] Treatment of PLA fibers and fabrics with ChCl-OA deep eutectic solvent: PLA fibers are pre-deoiled with 0.3-0.8g / L sodium carbonate solution (at 38-45°C for 5-20min), and then impregnated in the pre-prepared In the completed ChCl-OA system (the mass ratio of polylactic acid fiber to the system is 1:20-30), treat it at 40-70°C for 5-180min, then take it out and wash it with distilled water, dry it at 100°C, and wait for the test .

[0033] The following is illustrated by specific examples:

Embodiment 1

[0035] 1. Preparation of ChCl-OA deep eutectic solvent: Accurately weigh choline chloride and oxalic acid according to the ratio of substances to 1:1. On a stirrer, stir at 95°C to aid dissolution until the system is completely dissolved to a transparent state, and then continue to stir for 1 hour to prepare ChCl-OA DES for later use.

[0036] 2. Treatment of PLA fibers and fabrics with ChCl-OA deep eutectic solvent: PLA fibers are pre-deoiled with 0.5g / L sodium carbonate solution (at 40°C for 10 minutes), and then impregnated in pre-prepared ChCl- In the OA system (the mass ratio of polylactic acid fiber to the system is 1:25), treat it at 55°C for 60 minutes, then take it out and wash it with distilled water, dry it at 100°C, and wait for the test.

Embodiment 2

[0038] 1. Preparation of ChCl-OA deep eutectic solvent: Accurately weigh choline chloride and oxalic acid according to the ratio of substances to 1:1.5. On a stirrer, stir at 100°C to aid in dissolution until the system is completely dissolved to a transparent state, and then continue to stir for 0.5h to prepare ChCl-OA DES for later use.

[0039] 2. Treatment of PLA fibers and fabrics with ChCl-OA deep eutectic solvent: PLA fibers are pre-deoiled with 0.5g / L sodium carbonate solution (at 40°C for 15 minutes), and then impregnated in pre-prepared ChCl- In the OA system (the mass ratio of polylactic acid fiber to the system is 1:30), treat it at 60°C for 60 minutes, then take it out and wash it with distilled water, dry it at 100°C, and wait for the test.

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Abstract

The invention provides a processing technology and application of hydrophilic polylactic acid fibers. The processing technology is characterized in that polylactic acid fibers are sequentially subjected to deoiling pretreatment, choline chloride / oxalic acid system treatment, washing and drying to obtain the hydrophilic polylactic acid fibers. The preparation method has the advantages of mild processing technology, no pollution, degradability, low cost and the like, is simple to operate and free of toxic and side residues, can effectively improve the biological cell compatibility of the PLA fibers, and has a wide application value in the biomedical field.

Description

technical field [0001] The invention relates to the technical field of fiber surface reconstruction, in particular to a processing technology and application of a hydrophilic polylactic acid fiber. Background technique [0002] Polylactic acid (PLA) fiber is a renewable and naturally degradable new type of sustainable ecological fiber. It has high crystallinity and transparency. It can be spun by conventional processing technology without special equipment and operation technology. . Yarns and textiles processed from PLA fibers have the hand and drapability of traditional polyester (PET) fabrics, are UV resistant, have low flammability and excellent processing performance, and are suitable for various fashion, casual wear, sporting goods and hygiene Supplies, etc., have broad application prospects, and PLA is also widely used in the field of tissue engineering materials and medical products. [0003] However, PLA fiber has two significant disadvantages: one is that it is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/463D06M13/188A61L27/18A61L15/26D06M101/32
CPCD06M13/463D06M13/188A61L27/18A61L15/26D06M2101/32C08L67/04
Inventor 王宗乾应丽丽李长龙王勇张艳艳许青波
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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