Preparation method of cellulose-based composite material

A composite material, cellulose-based technology, which is applied in the field of polymer material preparation, can solve the problems of easy coagulation, poor performance of straw fiber/montmorillonite nanocomposite materials, etc., and achieves uniform structure improvement and good practical application. Value, effect of improving tensile properties

Inactive Publication Date: 2014-03-05
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to modify the montmorillonite, and the montmorillonite nanoparticles are easy to coagulate and settle in the water system, and the prepared straw fiber / montmorillonite nanocomposite has poor performance.

Method used

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  • Preparation method of cellulose-based composite material
  • Preparation method of cellulose-based composite material
  • Preparation method of cellulose-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]A preparation method of cellulose-based composite material, the steps are as follows:

[0034] (1) Freeze the sodium hydroxide / urea aqueous solution to -14°C, add cellulose according to the cellulose concentration of 3wt%, and stir until the cellulose is completely dissolved to obtain the sodium hydroxide / urea aqueous solution of cellulose; the hydroxide In the sodium / urea aqueous solution, the concentration of sodium hydroxide is 7wt%, and the concentration of urea is 12wt%;

[0035] (2) Disperse lithium magnesium silicate in water at a concentration of lithium magnesium silicate of 0.1wt%, add sodium hydroxide at a concentration of 7wt% of sodium hydroxide, and disperse evenly to obtain a lithium magnesium silicate dispersion;

[0036] (3) Mix the sodium hydroxide / urea aqueous solution of cellulose obtained in step (1) and the lithium magnesium silicate dispersion liquid obtained in step (2) in a weight ratio of 2:1 to obtain cellulose / lithium magnesium silicate Compo...

Embodiment 2

[0039] A preparation method of cellulose-based composite material, the steps are the same as in Example 1, except that:

[0040] In step (2), lithium magnesium silicate is dispersed in water according to the lithium magnesium silicate concentration of 0.2 wt%.

Embodiment 3

[0042] A preparation method of cellulose-based composite material, the steps are the same as in Example 1, except that:

[0043] In step (2), lithium magnesium silicate is dispersed in water according to the lithium magnesium silicate concentration of 0.3 wt%.

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Abstract

The invention relates to a preparation method of a cellulose-based composite material. The method comprises the following steps: preparing a cellulose solution and a lithium magnesium silicate solution; mixing the cellulose solution with the lithium magnesium silicate solution; coagulating and regenerating in a coagulating bath; washing and drying to obtain the cellulose-based composite material. According to the preparation method, lithium magnesium silicate can form a stable nanometer flake structure in a water system, so that ultra-fine dispersion of lithium magnesium silicate nano particles in the cellulose solution is realized, and the cellulose-based composite material, which is compact and even in structure, and is significantly improved in the tensile property, is prepared; dispersing is carried out in absence of any surfactant. Therefore, the preparation method is simple in steps, and has good practical application value.

Description

technical field [0001] The invention relates to a preparation method of a cellulose-based composite material, in particular to the use of lithium magnesium silicate to form ultrafine dispersion in a cellulose network structure to improve and strengthen cellulose materials, and belongs to the field of polymer material preparation. Background technique [0002] Based on the needs of environmental protection and sustainable development, the development of bio-based materials represented by cellulose is the focus of current polymer research. As the most abundant natural polymer in nature, cellulose is cheap, environmentally friendly, especially has high biocompatibility and biodegradability, and is expected to replace petroleum in many fields such as daily life, food, medicine, and materials. Chemical Products. On the one hand, cellulose can be chemically modified to generate cellulose derivatives, such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08K9/02C08K9/04C08K3/34
Inventor 苑再武秦梦华
Owner QILU UNIV OF TECH
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