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Method for improving bamboo pulp fiber softness

A bamboo pulp fiber and softness technology, applied in pulp beating method, fiber raw material treatment, cellulose treatment with microorganisms/enzymes, etc., can solve the problems of cumbersome operation, high cost, harmful to human body and environment, etc., and improve the softness performance. , Easy to operate, and the effect of reducing pollution

Inactive Publication Date: 2018-05-25
TIANJIN UNIV OF SCI & TECH
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  • Summary
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AI Technical Summary

Problems solved by technology

The traditional method of improving softness has disadvantages such as high cost, cumbersome operation, harmful to human body and environment, and the use of ultrasonic pretreatment of pulp fibers can well avoid these disadvantages

Method used

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  • Method for improving bamboo pulp fiber softness
  • Method for improving bamboo pulp fiber softness
  • Method for improving bamboo pulp fiber softness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of method utilizing ultrasonic action to improve the softness of bamboo pulp fiber, comprises the steps:

[0017] Step 1: beating the high-yield bamboo pulp to a beating degree of 32°SR; obtaining fiber pulp;

[0018] Step 2: Take six fiber slurries of equal quality, add water to adjust the mass concentration of the fiber slurries to 0.05%, put these six slurries into the ultrasonic instrument for 0min, 10min, 20min, 30min, 40min, 50min, ultrasonic During the action, the slurry is treated with an ice-water bath to absorb the heat emitted by the ultrasonic wave.

[0019] Step 3: Squeeze out the moisture from the material obtained in step 2, and measure the softness of a single fiber by measuring the bending degree of the fiber with the glass-wire method to quantitatively analyze the softness of the fiber. See Tables 1 and 2.

[0020] Table 1 The effect of ultrasonic action time on the softness of high-yield bamboo pulp fibers when the ultrasonic power is 500W

...

Embodiment 2

[0026] Ultrasonic action and enzyme treatment combine the method for improving the softness of bamboo pulp fiber, comprising the steps:

[0027] Step 1: beating the high-yield bamboo pulp to a beating degree of 32°SR; obtaining fiber pulp;

[0028] Step 2: Take six fiber slurries of equal quality, add water to adjust the mass concentration of the fiber slurries to 0.05%, put these six slurries into the ultrasonic instrument for 0min, 10min, 20min, 30min, 40min, 50min, ultrasonic During the action, the slurry is treated with an ice-water bath to absorb the heat emitted by the ultrasonic wave.

[0029] Step 3: heat up the material obtained in step 2 to 50°C, add cellulase so that the mass fraction of cellulase is 0.01%, and act on cellulase for 50 minutes.

[0030] Step 4: The material obtained in step 3 is squeezed out of water, and the softness of a single fiber is measured by the method of quantitatively analyzing the softness of the fiber by measuring the degree of bending ...

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Abstract

The invention discloses a method for improving bamboo pulp fiber softness and belongs to the pulping and papermaking field. The method is mainly characterized by the following steps that (1) the fibrous raw material is pulped until the pulping degree is 25 degree SR-35 degree SR; (2) water is added to adjust the mass concentration of the fibrous raw material to be 0.01%-0.03%, the diluted pulp isplaced into an ultrasonic generator, the temperature is kept by ice-water bath, and the ultrasonic wave acts for 10 min-70 min; (3) the material obtained in the step (2) is heated to the temperature of 40 DEG C-60 DEG C, cellulase is added, and the cellulase acts for 30 min-120 min; (4) the softness of single fiber obtained in the step (3) is subjected to quantitative analysis with the same method. According to the method for improving the bamboo pulp fiber softness, the ultrasonic wave is combined with enzyme to process the pulp, the softness of single fiber is improved by the aid of the acoustic cavitation effect of the ultrasonic wave, and favorable conditions are provided for subsequent enzyme treatment.

Description

technical field [0001] The invention belongs to the field of pulp and papermaking, and in particular relates to a method for improving the softness of bamboo pulp fibers. Background technique [0002] With the continuous and stable development of my country's paper industry, the output of paper and cardboard has leapt to the first place in the world, and the paper industry has become one of the symbolic industries of my country's economic development. The raw materials of my country's paper industry mainly come from waste paper pulp, wood fiber raw materials, and non-wood fiber raw materials. Due to the defects of its secondary fibers, waste paper pulp has limited its use as medium and high-end paper. In recent years, with the gradual reduction of wood resources, the simple use of wood fiber as a raw material can no longer meet the demand, and it is urgent to develop non-wood fiber raw materials as a supplement . Among non-wood fiber plants, bamboo fiber belongs to the cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21C5/00D21H11/12
CPCD21D1/02D21C5/005D21H11/12
Inventor 刘洪斌刘晶李晨曦
Owner TIANJIN UNIV OF SCI & TECH
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