Method for preparing nanocellulose microfibrils through pretreatment of ternary eutectic solvent

A low eutectic solvent and nanocellulose technology, which is applied in fiber raw material processing, textile and papermaking, etc., can solve problems such as poor effect, and achieve the effects of simple operation, shortened pretreatment time, and small particle size.
CN112853794AActive Publication Date: 2021-05-28JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2021-05-28

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Abstract

The invention discloses a method for preparing nanocellulose microfibrils through pretreatment of a ternary eutectic solvent, which belongs to the technical field of biomass nanocellulose preparation. The method comprises the following steps of firstly, pretreating lignocellulose biomass by using a ternary eutectic solvent, and separating to obtain a component rich in cellulose, preparing a 1wt% solution from a cellulose-rich component, centrifuging to obtain a nanocellulose suspension, carrying out high-strength ultrasonic treatment to fibrillate nanofibers, and freeze-drying to obtain the nanocellulose microfibril. The particle size range of the prepared nanocellulose microfibril is 26.84-61.26 nm, the removal rate of lignin reaches 56.28%, the effect is remarkable, operation is easy, the condition is mild, the cost is low, and pollution is small; and meanwhile, the used eutectic solvent is very environment-friendly, meets the standard of green chemical production, and has a relatively good practical application value.
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Description

technical field

[0001] The invention belongs to the technical field of biomass nanocellulose preparation, and in particular relates to a method for preparing nanocellulose microfibrils by pretreatment of a ternary deep eutectic solvent. Background technique

[0002] Energy is the basis for human survival and an important pillar for the development of modern society. At present, the excessive development and use of traditional fossil fuels such as coal, oil, and natural gas have caused resource scarcity and also brought a series of environmental problems. Therefore, the sustainable development of new energy has become the top priority of energy work in the new era. Cellulose is one of the most widely distributed and abundant renewable resources in nature. It not only has the advantages required for biomaterials such as renewability, biocompatibility, degradability and non-toxicity, but also has good mechanical properties. Based on this, cellulose has become an important raw...

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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