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Antibacterial nanofiber and preparation method thereof

A nanofiber and cellulose technology, applied in fiber treatment, plant fiber, biochemical fiber treatment, etc., can solve the problems of bacterial growth and poor antibacterial ability, and achieve the effect of simple operation, elimination of poor antibacterial ability, and reasonable preparation process design

Active Publication Date: 2018-12-07
ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of poor antibacterial ability of nanofibers in the use process and easy to cause bacterial growth in the prior art, the present invention provides an antibacterial nanofiber and its preparation method

Method used

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  • Antibacterial nanofiber and preparation method thereof

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Embodiment 1

[0027] An antibacterial nanofiber and a preparation method thereof. Firstly, the biomass lignocellulosic material is prepared by physical and chemical treatment methods to prepare cellulose nanofibers, and then the cellulose nanofibers are placed in an oxidizing agent solution for oxidation treatment to obtain oxidized nanofibers, and then Place the oxidized nanofibers in silver ammonia solution for ion exchange and dry to obtain antibacterial nanofibers;

[0028] A kind of preparation method of antibacterial nanofiber comprises the following steps:

[0029] Step 1: First, the biomass lignocellulosic material is pulverized by a pulverizer, and then passed through an 80-mesh sieve to obtain fiber powder;

[0030] Step 2: Use the chemical extraction method to process the powder obtained in Step 1, and then carry out alkali treatment under stirring conditions. The alkali treatment temperature is 65 ° C, and the reaction time is 2.5 hours; after the reaction is completed, filter a...

Embodiment 2

[0037] An antibacterial nanofiber and a preparation method thereof. Firstly, the biomass lignocellulosic material is prepared by physical and chemical treatment methods to prepare cellulose nanofibers, and then the cellulose nanofibers are placed in an oxidizing agent solution for oxidation treatment to obtain oxidized nanofibers, and then Place the oxidized nanofibers in silver ammonia solution for ion exchange and dry to obtain antibacterial nanofibers;

[0038] A kind of preparation method of antibacterial nanofiber comprises the following steps:

[0039] Step 1: First, the biomass lignocellulosic material is pulverized by a pulverizer, and then passed through a 80-100 mesh sieve to obtain a fiber powder;

[0040] Step 2: Use the method of chemical extraction to process the powder obtained in Step 1, and then carry out alkali treatment under stirring conditions. The temperature of alkali treatment is 90°C, and the reaction time is 1.5h; after the reaction is completed, filt...

Embodiment 3

[0047] An antibacterial nanofiber and a preparation method thereof. Firstly, the biomass lignocellulosic material is prepared by physical and chemical treatment methods to prepare cellulose nanofibers, and then the cellulose nanofibers are placed in an oxidizing agent solution for oxidation treatment to obtain oxidized nanofibers, and then Place the oxidized nanofibers in silver ammonia solution for ion exchange and dry to obtain antibacterial nanofibers;

[0048] A kind of preparation method of antibacterial nanofiber comprises the following steps:

[0049] Step 1: First, the biomass lignocellulosic material is pulverized by a pulverizer, and then passed through a 80-100 mesh sieve to obtain a fiber powder;

[0050] Step 2, use the chemical extraction method to process the powder obtained in step 1, and then carry out alkali treatment under stirring conditions, the alkali treatment temperature is 80 ° C, and the reaction time is 2 hours; after the reaction is completed, filte...

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Abstract

The invention discloses an antibacterial nanofiber and a preparation method thereof. The preparation method comprises: preparing cellulose nanofibers from biomass wood fibers through physical and chemical treatment, oxidizing the cellulose nanofibers through an oxidant solution to obtain oxidized nanofibers, putting the oxidized nanofibers in a silver-ammonia solution for a reaction and drying thefibers to obtain antibacterial nanofibers. The preparation method has a reasonable design, is easy to operate and prepares compact porous nanofibers with a high length-diameter ratio. The nanofiber can adsorb external bacteria and has antibacterial and antiseptic effects.

Description

technical field [0001] The invention relates to a preparation method of nanofibers, in particular to an antibacterial nanofiber and a preparation method thereof. Background technique [0002] Cellulose is a polysaccharide macromolecule composed of glucose and is an important component of cell walls in biomass materials. Cellulose is composed of thousands of D-glucan unit chains connected by β-1-4 bonds, and is the largest and most widely distributed natural renewable polymer on earth. Compared with synthetic polymers, cellulose has the advantages of environmental friendliness, biocompatibility, biodegradation and wide range of sources. Cellulose nanofiber is a new type of biomass nanomaterial with extremely high aspect ratio and large specific surface area. It not only has the excellent properties of cellulose itself, but also has excellent mechanical properties. It is the current leader in the field of biomass nanomaterials Research hotspots. Cellulose nanofibers are wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/30D06M11/65D01F2/02D06M101/06
CPCD01F2/02D06M11/30D06M11/65D06M16/00D06M2101/06
Inventor 蒋国军倪冬蒋一波
Owner ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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