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A kind of preparation method of core-shell type nano essence capsule

The technology of essence capsule and core-shell type is applied in the field of preparation of core-shell type nano-flavor capsules, which can solve the problems of unstable composition, deterioration and volatile, and achieve the effect of improving aroma, high encapsulation rate and lasting aroma. Effect

Active Publication Date: 2019-02-01
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flavors are composed of a variety of volatile small molecular compounds, the main components of which are unstable and volatile, and are easily affected by external conditions and deteriorate during use.

Method used

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  • A kind of preparation method of core-shell type nano essence capsule
  • A kind of preparation method of core-shell type nano essence capsule
  • A kind of preparation method of core-shell type nano essence capsule

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preparation example Construction

[0038] The preparation method of the described core-shell nano-essence capsules comprises the following steps:

[0039] 1) Mix methyl methacrylate, styrene, flavor and emulsifier to make an emulsion, after emulsification, add an initiator to react to obtain the core layer flavor capsule emulsion;

[0040] 2) Mix butyl acrylate, coupling agent and emulsifier to prepare an emulsion, and after emulsification, a shell pre-emulsion is obtained;

[0041] 3) Add the shell pre-emulsion and initiator to the core essence capsule emulsion, and obtain the core shell capsule emulsion after reaction;

[0042] 4) Mix organosilicon, catalyst and dispersant to make an emulsion, add it to the core-shell capsule emulsion for reaction, adjust the pH value of the emulsion to neutral with alkali, and obtain a silicone-modified essence core-shell capsule emulsion. After washing and drying, the core-shell nano essence capsules are obtained.

[0043] Preferably, the emulsifier is at least one of non...

Embodiment

[0063] A silicone-modified core-shell nano-essence capsule, which is specifically prepared by the following reaction steps:

[0064] 1. First prepare the core layer emulsion of the fragrance capsule: 2g methyl methacrylate, 2g styrene, 0.36g emulsifier OP-10 and 0.12g sodium lauryl sulfate, 4g lemon oil essence, 0.08g acrylic acid and 1g 5 % sodium bicarbonate solution was mixed, and 80 g of deionized water was added, homogenized at 12000 r / min for 20 min under the T-25 digital high-speed electric emulsifier, then transferred to a 500 ml four-necked flask under the protection of an argon atmosphere and Place it in a water bath at 80°C, slowly add 0.08 g of initiator ammonium persulfate dropwise within 20 minutes, stir and react at a constant temperature for 3.5 hours, and prepare the core layer fragrance capsule emulsion.

[0065] 2. Prepare the shell emulsion of the essence capsule: 3.2g butyl acrylate and 0.2g silane coupling agent vinyltriethoxysilane, 0.36g OP-10 and 0.12g...

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Abstract

The invention discloses a preparation method of a core-shell nano essence capsule. The essence capsule is a nano essence capsule with a core-shell structure composed of essence as a core material, methyl methacrylate and styrene as core wall material monomers, and butyl acrylate and organic silicon as shell wall material monomers. The preparation method is as follows: 1) Methyl methacrylate, styrene and essence are made into core layer fragrance capsule emulsion; 2) Shell layer pre-emulsion is made with butyl acrylate etc.; 3) Into the core layer fragrance capsule emulsion Add shell pre-emulsion and initiator to obtain core-shell capsule emulsion; 4) Add silicone, catalyst and dispersant to core-shell capsule emulsion to obtain silicone-modified flavor core-shell capsule emulsion, after washing and drying, Obtain the core-shell nano essence capsule. The prepared essence capsule has excellent mechanical properties, stable chemical properties, an average particle size of about 100nm, uniform particle size distribution, long-lasting fragrance and good water resistance, and can be used in fields such as textiles, cosmetics and clothing.

Description

technical field [0001] The invention relates to a preparation method of a core-shell nano essence capsule. Background technique [0002] With the improvement of people's living standards, aromatization has become an important method to improve the function and added value of fabrics. However, essence is composed of various volatile small molecular compounds, and its main components are unstable and volatile, and are easily affected by external conditions and deteriorate during use. Encapsulation can increase the fragrance retention time of the fragrance in the fabric and improve the stability of the fragrance of the fragrance. [0003] Many materials can be used to prepare flavor capsules, among which core-shell polymers have attracted widespread attention. Core-shell polymers usually have two polymers, one with a low glass transition temperature and one with a high glass transition temperature, called hard-core-soft-shell or soft-core-hard-shell polymers. The essence cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/04C08F220/18C08F220/14C08F212/08C08F220/06C08F230/08C08F2/30C08F2/26B01J13/14D06M23/12D06M15/356D06M101/06
CPCB01J13/14C08F2/26C08F2/30C08F212/08C08F220/14C08F265/04D06M15/3568D06M23/12D06M2101/06C08F220/06C08F220/1804
Inventor 刘聪石光梁柏俊
Owner SOUTH CHINA NORMAL UNIVERSITY