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Nano bacterial cellulose superfine fiber processing method

A bacterial cellulose and microfiber technology, applied in fiber processing, complete sets of equipment for producing artificial threads, filament/thread forming, etc., can solve the problem of single product structure, low added value of products, insufficient investment in deep processing and application research, etc. problems, to achieve the effect of clean processing method, wide range of application fields and high efficiency

Inactive Publication Date: 2016-02-10
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, the processing of ultra-fine and ultra-long bacterial cellulose fibers has great technical difficulties. First, there is no simple, convenient, and high-yield physical processing method; the second is to further study and utilize the molding and molding process of bacterial cellulose The technology has not yet been resolved; the third is as a biomedical material, its long-term effect on organisms, in vivo degradability, compatibility with host tissues and cells, and changes in the mechanical, physical and chemical properties of bacterial cellulose in vivo, etc. A series of issues still need further research
Fourth, there are problems such as single product structure, insufficient investment in product deep processing and applied research, and low product added value.

Method used

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  • Nano bacterial cellulose superfine fiber processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The bacterial cellulose wet film 1 is gripped and fed by a gripping roller 2 with a diameter of 20 mm, and the feeding speed is 10 mm / min.

[0023] At a diameter of 300mm, a rotational speed of 400 rpm, and a planting density of 2 roots / cm 2 Under the action of needle-punched licker-in rollers, the bacterial cellulose wet film is carded and divided to obtain ultrafine bacterial cellulose fibers with a fiber diameter of 450nm and a length of 5-100mm. The acupuncture length is 0.1cm, the diameter of the acupuncture shaft is 0.001mm, the diameter of the acupuncture tip is 1um, and the length of the acupuncture tip is 1mm.

[0024] Put the obtained bacterial cellulose fibers in a refiner to refine pulp to form bacterial cellulose superfine fibers, and then filter them through a filter press to prepare bacterial cellulose superfine fibers with a moisture content of 20,000%. The fiber diameter is 450nm, and the ultrafine fiber length is 5~100mm.

Embodiment 2

[0026] Use a holding roller with a diameter of 30mm to hold and feed the bacterial cellulose wet film, and the feeding speed is 20mm / min.

[0027] At a diameter of 300mm, a rotational speed of 400 rpm, and a planting density of 20 roots / cm 2 Under the action of needle-punched licker-in rollers, the bacterial cellulose wet film is carded and divided to obtain ultrafine bacterial cellulose fibers with a fiber diameter of 450nm and a length of 5-100mm. The acupuncture length is 1cm, the diameter of the acupuncture shaft is 0.1mm, the diameter of the acupuncture tip is 10um, and the length of the acupuncture tip is 2mm.

[0028] Put the obtained bacterial cellulose fibers in a refiner to refine the pulp to form bacterial cellulose ultrafine fibers, and then filter them through a filter press to prepare bacterial cellulose ultrafine fibers with a moisture content of 20,000%. The fiber diameter is 350nm, and the ultrafine fiber length is 5~100mm.

Embodiment 3

[0030] Use a holding roller with a diameter of 40mm to hold and feed the bacterial cellulose wet film, and the feeding speed is 40mm / min.

[0031] At a diameter of 300mm, a rotational speed of 400 rpm, and a planting density of 100 roots / cm 2 Under the action of needle-punched licker-in rollers, the bacterial cellulose wet film is carded and divided to obtain ultrafine bacterial cellulose fibers with a fiber diameter of 450nm and a length of 5-100mm. The acupuncture length is 2cm, the diameter of the acupuncture shaft is 2mm, the diameter of the acupuncture tip is 20um, and the length of the acupuncture tip is 5mm.

[0032] Put the obtained bacterial cellulose fibers in a refiner to refine the pulp to form bacterial cellulose ultrafine fibers, and then filter them through a filter press to prepare bacterial cellulose ultrafine fibers with a moisture content of 20,000%. The fiber diameter is 250nm, and the ultrafine fiber length is 5~100mm.

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Abstract

The invention discloses a nanometer bacterial cellulose ultrafine fiber processing method. A bacterial cellulose wet film is used as a base raw material. After being subjected to high-speed puncture, separation through cutting, and carding, the bacterial cellulose wet film is changed into bacterial cellulose fibers. The obtained bacterial cellulose fibers are placed in a grinding machine for being ground to form bacterial cellulose ultrafine fibers. The bacterial cellulose ultrafine fibers are subjected to filter pressing processing in a filter press, and then the ultrafine cellulose ultrafine fibers with certain moisture content, certain diameters and certain lengths are prepared. The nanometer bacterial cellulose ultrafine fiber processing method has the advantages that the ultrafine cellulose ultrafine fibers are long, thin and non-toxic, the processing method is clean, simple, economical and high in efficiency, the fibers obtained through the processing method are wide in application field, the obtained ground solution can be used repeatedly, and the concept of recycling economy is met.

Description

technical field [0001] The invention relates to a method for processing superfine fibers, in particular to a method for processing nano-bacteria cellulose superfine fibers. Background technique [0002] The molecular structure of bacterial cellulose (BC) is basically the same as that of plant cellulose, but its important structural features and properties make its practical application significance far greater than that of plant cellulose. It not only has good mechanical properties, gas permeability, bioaffinity, biocompatibility, biocompatibility and good biodegradability, but also has high purity, high degree of polymerization, high crystallinity, high water content The physical and chemical properties such as high mechanical stability and high mechanical stability are superior to plant cellulose, and these properties are all caused by the specific network nano-supramolecular structure formed in the aqueous medium. Therefore, it is recognized as a new type of natural bio-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/42D01D13/02C08J7/00C08L1/02
Inventor 张迎晨吴红艳
Owner ZHONGYUAN ENGINEERING COLLEGE
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