A kind of preparation method of functional nano-cellulose composite airgel

A technology of nano-cellulose and composite airgel, which is applied in the interdisciplinary fields of polymers, chemical engineering and nano-materials, can solve the problems of unstable cross-linked network structure, low mechanical properties, and unsatisfactory pore structure, and achieve easy control of the process , low production cost and simple method
CN107556495BInactive Publication Date: 2019-02-12NANJING FORESTRY UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING FORESTRY UNIV
Publication Date
2019-02-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of functional nano-cellulose composite aerogel and belongs to the cross technical field of high-polymer chemistry and chemical engineering and nanometer materials. Firstly, hydrogel is formed through gelation in a water solution under electrostatic interaction between nano-cellulose and a cationic polymer, functional additives are supported in a gelation process, hydrogel with the functional additives supported is obtained and added to a chemical crosslinking agent solution for chemical enhanced crosslinking, and finally, the nano-cellulose composite aerogel is obtained through drying. The method adopts a simple preparation process, adopted raw materials for preparation are environmentally friendly and economic, and the prepared functional nano-cellulose composite aerogel is of a nano-mesoporous three-dimensional network structure, has higher porosity and is stable in structure and excellent in mechanical property.
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Description

technical field

[0001] The invention discloses a preparation method of functional nano-cellulose composite airgel, in particular relates to a preparation method of airgel which is gelled by physical electrostatic action and combined with chemical cross-linking enhancement, which belongs to polymer, chemical Chemical industry and nanomaterials intersect technical field. Background technique

[0002] Airgel is a lightweight, porous, reticulated solid material, which is generally obtained by displacing the liquid in the wet gel with gas through a drying process (Du A, Zhou B, Zhang Z H, et al.Materials, 2013, 6:941-968.). Airgel materials have the characteristics of high specific surface area, high porosity, low density, and high adsorption. Nanocellulose is a cellulose aggregate array formed by separating microfibrils and extracting cellulose crystals, with a diameter of less than 100 nm and a length ranging from hundreds of nanometers to microns. Nanocellulose has the adva...

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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