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Essence microcapsule taking poly(n-butyl methacrylate) as capsule wall and preparation method thereof

A technology of poly-n-butyl methacrylate and n-butyl methacrylate, which is applied in the chemical field, can solve the problems of uncontrollable, irregular structure, uneven particle size distribution, etc., and achieves regular morphology, uniform particle size, Significant technological progress

Inactive Publication Date: 2018-10-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, β-cyclodextrin aromatic microcapsules use the special cavity structure of β-cyclodextrin to coat the essence. The method is simple, but it also leads to problems such as irregular structure, uneven particle size distribution and uncontrollable.

Method used

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  • Essence microcapsule taking poly(n-butyl methacrylate) as capsule wall and preparation method thereof
  • Essence microcapsule taking poly(n-butyl methacrylate) as capsule wall and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of water phase:

[0033] Weigh 1g of PVA and 181.7g of deionized water, put 1g of PVA powder and 181.7g of deionized water in a beaker, and stir at 80°C for 10min under the action of an electric stirrer to completely dissolve the PVA powder to obtain an aqueous phase;

[0034] (2) Preparation of oil phase:

[0035] Weigh 8g of n-butyl methacrylate in a 250ml beaker, then add 8g of apple essence and 1g of crosslinking agent and place it on an electric stirrer and stir for 10min to make it completely dissolve in each other to obtain an oil phase;

[0036] (3) Preparation of emulsion

[0037] The oil phase is added to the water phase, and the water and oil two-phase mixture is sheared at a high speed for 3 minutes under the action of a high-speed homogenizer at 6600 rpm to form a uniform emulsion;

[0038] (4) Preparation of microcapsules

[0039] Place the obtained emulsion in a water bath and heat it at a constant temperature, stir evenly in an electri...

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Abstract

The invention provides an essence microcapsule taking poly(n-butyl methacrylate) as a capsule wall. The essence microcapsule is composed of 2.0-5.0% of essence, 2.0-5.0% of n-butyl methacrylate, 0.5-1% of emulsifier, 88.0-95.0% of deionized water, 0.5-1.0% of crosslinking agent and 0.1-0.2% of catalyst. The invention further provides a preparation method of the essence microcapsule. Compared withconventional microcapsule shells, the essence microcapsule has the advantage that nontoxic n-butyl methacrylate monomer is used as a wall material, so that higher safety and environment-friendliness are realized. The preparation method is simple and easy to implement, and the microcapsule prepared by the method is regular in shape, uniform in particle size and easy for industrial production.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an essence microcapsule, in particular to an essence microcapsule with poly-n-butyl methacrylate as the capsule wall and a preparation method thereof. Background technique [0002] With the development of the flavor industry, research on flavor microcapsules is also increasing. Microcapsule technology is a microcapsule technology that uses polymer materials to embed active substances to form semi-permeable or sealed capsules. It can improve the physical properties of the encapsulated substance, isolate the active ingredient from the external environment, enhance stability, reduce volatility, extend shelf life, and also have a controlled release function. [0003] Among them, the most widely used preparation methods of flavor microcapsules include β-cyclodextrin fragrance microcapsules, gelatin-gum arabic fragrance microcapsules, melamine resin fragrance microcapsules, and polyurea f...

Claims

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Application Information

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IPC IPC(8): C11B9/00B01J13/14
CPCB01J13/14C11B9/0003C11B9/0015
Inventor 肖作兵刘思宏邓娟刘敏徐子淇陈佳莹
Owner SHANGHAI INST OF TECH
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