Super liquid-absorbent medical cotton swab containing graphene oxide

A graphene, high-absorbent technology, applied in applications, absorbent pads, medical science, etc., can solve the problems of water absorption gap, inconvenient large-scale production, etc., to improve water absorption, simple and efficient production process, and promote wound healing. Effect

Inactive Publication Date: 2017-04-26
阜阳市汇康医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the article "Polylactic acid fiber modification by grafting polyvinylpyrrolidone on the surface", polyvinylpyrrolidone was grafted on the surface of partially hydrolyzed polylactic acid fiber to obtain a modified polylactic acid fiber with certain water absorption, but this method is not convenient for large-scale production. Large-scale production, and there is still a big gap in the water absorption of fibers compared with absorbent cotton, and further modification is required

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A highly liquid-absorbent medical cotton swab containing graphene oxide is composed of a cotton swab and composite fiber cotton wrapped around the end of the cotton swab. The composite fiber cotton is made of the following raw materials in parts by weight: polylactic acid particles 15, Nano activated carbon 3, polyaspartic acid 2, graphene oxide 0.1, dopamine hydrochloride 5, Tris-HCl buffer solution, deionized water 200.

[0016] Wherein the preparation method of composite fiber cotton is:

[0017] (1) Stir and mix the polylactic acid particles with nano-activated carbon and graphene oxide evenly before melt spinning, the spinning temperature is 230°C, the spinning speed is 3000 m / min, and the composite polylactic acid fibers with an average diameter of 10 μm are made spare;

[0018] (2) First take 100 parts by weight of deionized water and put it into the reaction container, then add dopamine hydrochloride, stir until it is completely dissolved, then add Tris-HCl buf...

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PUM

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Abstract

The invention discloses super liquid-absorbent medical cotton swab containing graphene oxide. The medical cotton swab is composed of a cotton stick and composite fiber cotton covering the end of the cotton stick. According to the cotton swab provided by the invention, a conventional degreased cotton ball is replaced by regenerative and degradable composite polylactic acid fiber cotton, wherein with the adoption of such ingredients as the graphene oxide, nano activated carbon and the like, the composite fiber cotton has certain hydrophilicity, air permeability and adsorbability, and a polydopamine-polyaspartic acid film layer is attached to and grated on the surface of the composite fiber cotton, so that water-absorbing performance of fibers is further enhanced, and a function of promoting healing of wound surfaces is achieved; the cotton swab is simple and efficient in production process, materials in various links can be recycled, and adverse influence on environment is avoided.

Description

technical field [0001] The invention relates to the technical field of medical cotton swabs, in particular to a highly liquid-absorbent medical cotton swab containing graphene oxide. Background technique [0002] Medical cotton swab is a very common medical care product. It is obtained by rolling absorbent cotton on sticks made of plastic sticks, paper sticks, and wooden sticks. Its main functions are disinfection, sampling, etc., and its use is very wide. Because the cotton swab is in direct contact with the wound, it has high requirements on the quality of the absorbent cotton. The absorbent cotton used in traditional medical cotton swabs is mostly obtained from cotton after degreasing with lye. Although it has good skin affinity and water absorption, due to the use of It is natural cotton, easy to breed bacteria, and the production cost is high, resulting in the emergence of many sterile cotton swab products made of inferior absorbent cotton on the market, which directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M35/00A61B10/00A61L15/26A61L15/18
CPCA61B10/00A61L15/18A61L15/26A61M35/006C08L67/04C08L79/04C08L79/08
Inventor 李慧康
Owner 阜阳市汇康医疗器械有限公司
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