Pickering emulsion gel based on mutual attraction of liquid drops and preparation method of Pickering emulsion gel

A technology of mutual attraction and emulsion gel, which is applied in the field of new materials, can solve problems such as the inability to form a three-dimensional cross-linked network and the instability of the oil-gel system, and achieve the effects of strong versatility, strong stability, and good stability
CN111116975AActive Publication Date: 2020-05-08ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2020-05-08

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Abstract

The invention discloses a Pickering emulsion gel based on mutual attraction of liquid drops and a preparation method of the Pickering emulsion gel. According to the method, nanoparticles with negativeelectricity are dispersed in water to serve as a water phase, a double-ammonia-terminal polymer with positive electricity is dissolved in oil to serve as an oil phase, and the water phase is emulsified in the oil phase through methods such as shaking, oscillating or homogenizing. In the emulsification process, the nanoparticles are adsorbed to a water-oil interface to form a Pickering emulsion; meanwhile, the double-ammonia-terminal polymer is also adsorbed to a water-oil interface; amino groups at the two ends of part of the polymer can be adsorbed to water-oil interfaces of two adjacent liquid drops respectively and attract nano-particles with negative electricity through electrostatic interaction, so that the two adjacent liquid drops are connected together, and the Pickering emulsiongel with the cross-linked liquid drops is formed. The novel emulsion gel is good in stability and high in universality, can be used as a template for developing novel materials such as porous materials and 3D printing materials, and has a wide application prospect.
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Description

technical field

[0001] The invention relates to the field of new materials, in particular to a Pickering emulsion gel based on mutual attraction of droplets and a preparation method thereof. Background technique

[0002] Gel is usually composed of polymer or colloidal particles in the medium connected to each other under certain conditions to form a three-dimensional space network structure, so that the system cannot flow freely and becomes a semi-solid state, so it has certain viscoelasticity and mechanical strength. The emulsion gel is a special gel system, and the gel medium usually contains dispersed water droplets or dispersed oil droplets. Because of its special structure and properties, emulsion gel has a wide range of applications in biomedicine, new materials and other fields.

[0003] Existing emulsion gels are mainly hydrogel systems containing dispersed oil droplets. For example, cosmetic creams use emulsification methods such as ultrasound and homogenization t...

Claims

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