Method for preparing graphene/nutshell fiber

A technology of graphene and graphene dispersion, which is applied in the field of pulping and papermaking, can solve the problems of insufficient pulping technology, low pulping yield, and low kappa value, and achieve simple pulping process and high fiber yield , the effect of low Kappa value

Inactive Publication Date: 2018-06-12
林荣铨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of graphene / husk fiber, which can not only solve the problem of low pulping yield, but also effectively improve the whiteness of the pulp. , the prepared fiber products have good hygienic properties, high whiteness and low kappa value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the graphene / husk fiber provided by the present embodiment comprises the following steps:

[0023] S1. Carry out deslagging treatment on the fruit shell, remove the silt and dust therein, dry until the water content is 20%, carry out the screw extrusion process on the above fruit shell, and set aside;

[0024] S2. the fruit shell of step S1 is placed in the ultrasonic reactor, add catalase, laccase and water, the consumption of catalase is 1.5 kilograms / ton material, and the consumption of laccase is 3 kilograms / ton material, water and The mass ratio of the fruit shell is 8:1, fully mixed, and fermented for 2 hours at a temperature of 70°C, and filtered after the fermentation to obtain filtrate and filtrate;

[0025] S3. add graphene dispersion liquid in the filtrate that step S2 obtains, after mixing uniformly, carry out decompression filtration 40min, dry 60min at 50 ℃, obtain the fruit shell fiber containing graphene; Fruit shell fiber and g...

Embodiment 2

[0029] The preparation method of the graphene / husk fiber provided by the present embodiment comprises the following steps:

[0030] S1. Carry out deslagging treatment to the fruit shell, remove the silt and dust therein, dry until the water content is 30%, carry out the screw extrusion process on the above fruit shell, and set aside;

[0031] S2. the fruit shell of step S1 is placed in the ultrasonic reaction kettle, add catalase, laccase and water, the consumption of catalase is 3 kilograms / ton material, and the consumption of laccase is 5 kilograms / ton material, water and The mass ratio of the fruit shell is 4:1, fully mixed, and fermented, the fermentation time is 4 hours, the temperature is 80°C, and the filtrate and the filtrate are obtained by filtering after the fermentation is completed;

[0032] S3. add graphene dispersion liquid in the filtrate that step S2 obtains, after mixing uniformly, carry out decompression filtration 60min, dry 120min at 80 ℃, obtain the fruit...

Embodiment 3

[0036] The preparation method of the graphene / husk fiber provided by the present embodiment comprises the following steps:

[0037] S1. Carry out deslagging treatment on the fruit shell, remove the silt and dust therein, dry until the water content is 25%, carry out the screw extrusion process on the above fruit shell, and set aside;

[0038] S2. the fruit shell of step S1 is placed in the ultrasonic reactor, add catalase, laccase and water, the consumption of catalase is 2 kilograms / ton material, and the consumption of laccase is 4 kilograms / ton material, water and The mass ratio of the fruit shell is 5:1, fully mixed, and fermented, the fermentation time is 4 hours, the temperature is 75°C, and after the fermentation is completed, it is filtered to obtain the filtrate and the filtrate;

[0039] S3. add graphene dispersion liquid in the filtrate that step S2 obtains, after mixing uniformly, carry out decompression filtration 50min, dry 80min at 60 ℃, obtain the fruit shell fi...

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Abstract

The invention relates to a method for preparing a graphene/nutshell fiber. The process for preparing the fiber by nutshells comprises spiral extrusion treatment, biological enzyme fermentation and graphene dispersion liquid modification. The nutshells are used as a raw material for preparing the fiber, and cooperate with the ultrasonic wave and the biological enzyme, and the fiber prepared by themethod has high fiber yield, high whiteness and low Kappa number, and no harmful chemicals are introduced in the whole process, thereby ensuring the sanitary characteristics of the fiber. Due to the addition of a graphene dispersion liquid during the pulping process, the obtained product has good electrical conductivity and antibacterial properties, and plays effective inhibiting and killing rolesespecially in staphylococcus aureus, escherichia coli, and hemolytic streptococcus.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to a preparation method of graphene / husk fiber. Background technique [0002] Graphene is a new type of two-dimensional ultra-thin nanomaterial, because of its unique structure, mechanical and electronic properties, it has broad application prospects in the field of bio-nanotechnology such as drug delivery and tumor treatment. Studies have shown that graphene can not only cut the bacterial cell membrane, but also induce the detachment of phospholipid molecules on the bacterial cell membrane, so as to realize the large-scale direct extraction of phospholipid molecules on the cell membrane by graphene. The physical action of cutting and extracting can cause the bacterial cell membrane to lose its integrity and the intracellular material to flow out, thereby achieving the effect of killing the bacteria. At the same time, graphene is a new type of nanomateri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21H17/00D21H17/06D21H21/08D21H21/36D21C5/00D21B1/02
CPCD21B1/02D21C5/005D21H11/12D21H17/00D21H17/06D21H21/08D21H21/36
Inventor 林荣铨
Owner 林荣铨
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