Preparation method of super-hydrophobic magnetic nano-crystalline cellulose paper

A nano-cellulose and magnetic nano-technology, applied in the use of microorganisms/enzyme cellulose treatment, non-fibrous pulp addition, fiber raw material treatment, etc., can solve the problems of non-magnetic, poor hydrophobic effect of nano-paper, etc.
CN105672014AActive Publication Date: 2016-06-15SHANDONG AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG AGRICULTURAL UNIVERSITY
Publication Date
2016-06-15

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Abstract

The invention discloses a preparation method of super-hydrophobic magnetic nano-crystalline cellulose paper, relates to a preparation method of magnetic nano-crystalline cellulose paper, and aims to solve the technical problems of poor hydrophobic effect and no magnetism of nano paper prepared by an existing method. The method comprises the following steps: 1, preparation of nano-crystalline cellulose water liquid; 2, preparation of nano-crystalline cellulose-magnetic nanoparticle mixed liquor; 3, preparation of a hydrophobic substance; 4, suction filtration film-forming of magnetic nano-crystalline cellulose; 5, preparation of the super-hydrophobic magnetic nano-crystalline cellulose paper. The super-hydrophobic magnetic nano-crystalline cellulose paper prepared by the method has the characteristics that the hydrophobic contact angle can reach up to 150 degrees or more, the rolling angle is less than 10 degrees, the magnetic intensity can reach 60emu / g, the stretching stress can reach 90MPa, and the maximal pyrolysis temperature can reach 360 DEG C. The preparation method belongs to the field of nano-crystalline cellulose paper preparation.
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Description

technical field

[0001] The invention relates to a preparation method of magnetic nano cellulose paper. Background technique

[0002] Nanocellulose has the advantages of wide source of raw materials, high strength, large specific surface area, good biocompatibility, biodegradability, renewable recycling, etc. Micron-scale, small diameter, large aspect ratio, so that it shows high mechanical properties, Young's modulus and tensile strength are 13GPa and 223MPa respectively; in addition, it also has a low thermal expansion coefficient (CTE<8.5ppmK -1 ). These remarkable properties make it possible to make nanocellulose film paper for high-end fields such as packaging, electronic speakers, and microfluidic chips.

[0003] However, the surface of nanocellulose contains a large number of functional groups - hydroxyl groups, which are very easy to absorb water, resulting in high water absorption of nanocellulose paper, and nanocellulose paper itself has no magnetic function, s...

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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