Preparation method for micro-nano-cellulose

A technology of micro-nano cellulose and cellulose, applied in fermentation and other directions, can solve the problems of poor uniformity of micro-nano cellulose, achieve uniform size and reduce the effect of acid-base neutralization treatment
CN106367455APending Publication Date: 2017-02-01SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-02-01

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Abstract

The invention discloses a preparation method for micro-nano-fibers. The method comprises the steps of (1) mixing a cellulose raw material with a buffer solution, adding a bio-enzyme, shaking to obtain a cellulose suspension liquid, and after filtering and washing, performing high-temperature inactivation on a filter liquor; (2) performing micro-fine pulp grinding on the processed cellulose to obtain a micron cellulose pulp liquid; and (3) performing low-temperature high-intensity micro-jet homogenization processing on the micron cellulose pulp liquid, and performing freeze-drying to obtain micro-nano-cellulose. According to the preparation method, a bio-enzyme pretreatment method is adopted for replacing a conventional acid or alkali treatment method, so that the problem of acid and alkali neutralization treatment in wastewater discharge is reduced; the micro-fine pulp grinding and the high-intensity micro-jet homogenization treatment of the cellulose are adopted, so that the obtained micro-nano-cellulose is uniform in size; and the prepared micro-nano-cellulose is uniform in dispersion and can be applied to products including food additives and military protection articles.
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Description

technical field

[0001] The invention belongs to the field of plant fiber materials, and in particular relates to a preparation method of micro-nano cellulose. Background technique

[0002] Plant cellulose is one of the most abundant natural polymer materials in nature. Due to its renewability and non-polluting properties, it has received more and more attention. After plant cellulose is prepared into micro-nano cellulose, it has the basic structure and properties of plant cellulose, and also has the characteristics of micro-nano cellulose itself, such as large specific surface area, super strong adsorption capacity and high strength.

[0003] At present, there are mechanical methods, chemical methods, and biological methods to prepare plant micro-nanocellulose. The document with the patent number 2010102139025 discloses a method for preparing nanocellulose fibers by combining ultrasonic treatment with high-pressure homogeneous treatment. Through ultrasonic treatment, the pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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