Method for preparation of nano-cellulose whiskers from garlic skins

A nanocellulose and whisker technology, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve the problems of time-consuming and labor-intensive, limiting the application and development of nano-cellulose whiskers with high aspect ratio, and cumbersome processes, etc. Achieve the effect of avoiding influence and harm, easy to implement, and simple process
CN103643577AActive Publication Date: 2014-03-19SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2014-03-19

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Abstract

The invention relates to a method for preparation of nano-cellulose whiskers from garlic skins. Taking garlic skins as raw materials, the method includes the steps of: 1) conducting dipping swelling in a sodium carbonate solution; 2) performing cooking degumming by an alkali solution; 3) carrying out polysaccharide extraction; 4) implementing bleaching treatment; 5) conducting sanding treatment; 6) performing acidification hydrolysis; and 7) carrying out washing dialysis and freeze drying, etc. The garlic skin raw materials undergo component separation and conversion to be made into a nano-cellulose dispersion liquid with certain concentration, and the dispersion liquid is subjected to freeze drying to remove water, thus obtaining the nano-cellulose whiskers. The nano-cellulose whiskers prepared by the method provided by the invention is needle-shaped, presents good dispersion, and has a high length-diameter ratio, a diameter of 20nm-30nm, and a length of 300nm-2micrometers. The method provided by the invention adopts garlic skins as the raw materials to remove pectin and other impurities. After functional compounding, the prepared nano-cellulose whiskers have wide application value in the fields of optics, electrics, magnetics, biology and semiconductors, etc.
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Description

technical field

[0001] The invention relates to a method for preparing nanocellulose, in particular to a method for preparing nanocellulose whiskers by using garlic peels. Background technique

[0002] In recent years, non-renewable energy sources such as natural gas, coal, and oil are facing shortages. Along with the rapid economic development, the huge demand for energy is having a huge impact on the world economy. While exports are growing, the development model of high energy consumption and high pollution is increasingly becoming the subject of concern. In order to solve this problem, it is necessary to increase the development and use of new energy, so as to better protect the environment under the premise of satisfying the development of circular economy.

[0003] Cellulose is one of the most abundant natural polymers in nature, the main chemical component of plant fiber raw materials, and the most important and basic component for pulp and papermaking. Excellent a...

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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