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Biological cellulose micro powder and application thereof

A technology of biological cellulose and micropowder, which is applied in the direction of microsphere preparation, microcapsule preparation, mixing method, etc., to achieve the effect of reducing usage and good stability

Active Publication Date: 2012-07-11
HAINAN GUANGYU BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on making biocellulose into nanopowder and applying it to the preparation of solid particle stable emulsion (Pickering emulsion)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Preparation of biocellulose micropowder

[0032] Take the biological cellulose membrane cultured statically, break it into small particles, grind it into a slurry with a colloid mill, and separate the solid particles by centrifugal filtration; then the solid particles are immersed in 2mol / L hydrochloric acid solution and reacted at 70°C for 2 Hours, after removing the acid, wash repeatedly with deionized water until the pH value is greater than or equal to 5; disperse the above-mentioned acid-hydrolyzed solid matter in deionized water, homogenize for 2 hours with ultrasonic waves with a frequency of 60KHz and a power of 400W, and centrifuge to separate The jelly is dried under reduced pressure at 30°C to constant weight to obtain biocellulose micropowder.

[0033]

Embodiment 2

[0034] Embodiment 2: the preparation of biological cellulose micropowder

[0035] Take the static cultured biological cellulose membrane, break it into small particles, grind it into a slurry with a colloid mill, and separate the solid particles by centrifugal filtration for later use; then immerse the solid particles in a 1.5mol / L sulfuric acid solution and react at 50°C After 4 hours, remove the acid and wash repeatedly with deionized water until the pH value is greater than or equal to 5; disperse the above-mentioned acid-hydrolyzed solid matter in deionized water, homogenize with ultrasonic waves with a frequency of 50KHz and a power of 600W for 4 hours, and centrifuge The jelly was obtained and dried under reduced pressure at 20°C to constant weight to obtain biocellulose micropowder.

[0036]

Embodiment 3

[0037] Embodiment 3: the preparation of biological cellulose micropowder

[0038] Take the dynamically cultured biocellulose particles, crush them into small particles, grind them into a slurry with a colloid mill, and separate the solid particles by centrifugal filtration; then immerse the solid particles in a 4mol / L hydrochloric acid solution and react at 80°C for 1 After removing the acid, wash repeatedly with deionized water until the pH value is greater than or equal to 5; disperse the above-mentioned acid-hydrolyzed solid matter in deionized water, homogenize it with an ultrasonic wave with a frequency of 80KHz and a power of 350W for 1 hour, and centrifuge to separate The jelly is dried under reduced pressure at 40°C to constant weight to obtain biocellulose micropowder.

[0039]

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PUM

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Abstract

The invention relates to biological cellulose micro powder, and an oil-in-water solid particle stable emulsion (Pickering emulsion) and a water-in-oil solid particle stable emulsion (Pickering emulsion) which are prepared from the biological cellulose micro powder. The biological cellulose micro powder is prepared by crushing and pulping a biological cellulose serving as a raw material, hydrolyzing the slurry with acid, removing acid liquid, dispersing the hydrolysate into an aqueous solution, homogenizing through ultrasonic wave, performing centrifugal separation to obtain a solid matter, and drying the solid matter at low temperature under reduced pressure. After the biological cellulose micro powder is dissolved in a certain amount of aqueous solution or an oily solution, an oily solution or an aqueous solution is added into the solution according to certain proportion, and the mixture is stirred at high speed to form stable emulsion, namely the oil-in-water or water-in-oil solid particle stable emulsion (Pickering emulsion). The prepared solid particle stable emulsion is safer and more economic.

Description

technical field [0001] The invention relates to a biological cellulose micropowder and its application in preparing solid particle emulsion. Background technique [0002] Emulsion is a dispersion system composed of two immiscible liquid phases (such as oil phase and water phase). In order to obtain a stable system, an emulsifier is usually required. Traditional emulsifiers are generally surfactants or polymers with surface activity. Through emulsifiers and mechanical mixing, one kind of liquid that is insoluble in another is dispersed into small droplets and exists stably in another continuous phase. . [0003] At the beginning of the 20th century, Ramsden discovered that colloid-sized solid particles can also form stable emulsions. After that, Pickering conducted systematic research on this emulsion, so the emulsion was named Pickering emulsion (solid particle stable emulsion). At present, the generally recognized stabilization mechanism of Pichering emulsions is that sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/12B01J13/02C08B15/02C08J3/16
Inventor 钟春燕钟宇光
Owner HAINAN GUANGYU BIOTECH