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Method for controlling particle size of Pickering emulsion by using cellulose derivative

A technology of cellulose derivatives and emulsion particle size, applied in the field of cellulose derivatives to control the particle size of Pickering emulsions, can solve the problems of poor stability of Pickering emulsions, and achieve good stabilization effect, reduced droplet particle size, and strong interaction. Effect

Inactive Publication Date: 2019-11-26
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of poor stability of Pickering emulsion, a method for controlling the particle size of Pickering emulsion by cellulose derivatives is provided

Method used

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  • Method for controlling particle size of Pickering emulsion by using cellulose derivative
  • Method for controlling particle size of Pickering emulsion by using cellulose derivative
  • Method for controlling particle size of Pickering emulsion by using cellulose derivative

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Prepare an aqueous solution of ethyl cellulose with a mass fraction of 0.5%, mix it with edible oil at a volume ratio of 9:1, and ultrasonicate for 60 seconds to obtain a Pickering emulsion. After standing for 30 minutes, take a sample and examine it under a microscope with a 40x objective lens Observe the particle size of the Pickering emulsion, and the data are shown in Table 1.

Embodiment 2

[0026] Prepare an aqueous solution of cellulose acetate with a mass fraction of 0.5%, mix it with edible oil at a volume ratio of 9:1, and ultrasonicate for 60 seconds to obtain a Pickering emulsion. After standing for 30 minutes, take a sample and observe it under a microscope with a 40x objective lens The particle size of the Pickering emulsion is shown in Table 1 for the data.

Embodiment 3

[0028] Prepare an aqueous solution of cellulose acetate propionate with a mass fraction of 0.5%, mix it with edible oil at a volume ratio of 9:1, and ultrasonicate for 60 seconds to obtain a Pickering emulsion. After standing for 30 minutes, take a sample and examine it under a microscope with a 40 times objective lens. The particle size of the Pickering emulsion was observed below, and the data are shown in Table 1.

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Abstract

A Pickering emulsion is prepared by using a cellulose derivative which is one of ethyl cellulose, cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate and acetylated nanocrystalline cellulose a solid emulsifier and using pollution-free edible oil as an oil phase, and the cellulose derivative has hydrophobic groups, so that the stability of the oil-in-water Pickering emulsionis facilitated. The acetylated modified nanocrystalline cellulose has strong interaction with an oil phase, so the stabilizing effect is good, the droplet size of the Pickering emulsion is significantly reduced, and the particle size distribution of the emulsion is uniform.

Description

technical field [0001] The invention relates to the field of preparation of Pickering emulsions, in particular to a method for controlling the particle size of Pickering emulsions by cellulose derivatives. Background technique [0002] Emulsion refers to a homogeneous system formed by mixing and emulsifying two or more immiscible liquids. It is widely used in production and life. Most of the traditional emulsifiers are polymers and surfactants with surface activity, but for this emulsion system, there are many shortcomings in the process of preparation and use, such as multiple foams, high toxicity, and large environmental pollution, and poor stability. Phase separation occurs under the influence of heat or gravity. In addition to small molecular weight surfactants, soluble proteins, polymer emulsifiers, and solid particles can also stabilize emulsions. Among them, the stable emulsion prepared by solid particles instead of emulsifier is called Pickering emulsion. This new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L1/28C08L1/12C08L1/14
CPCC08J3/03C08J2301/12C08J2301/14C08J2301/28
Inventor 陈建香杜鹏程向萌
Owner JIANGSU UNIV OF TECH
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