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Preparation method for polymer microcapsule

A technology of microcapsules and polymers, applied in the field of preparation of polymer microcapsules, can solve the problems of a large number of surfactant initiators, complex systems, etc., and achieve the effects of low cost, simple system and preparation process, and strong versatility

Inactive Publication Date: 2017-05-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it needs to use a large amount of surfactant and initiator, and the system is relatively complicated.

Method used

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  • Preparation method for polymer microcapsule
  • Preparation method for polymer microcapsule

Examples

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Effect test

Embodiment 1

[0018] Embodiment 1: Polyglycidyl methacrylate triggers styrene polymerization to prepare polymer microcapsules

[0019] Mix 6g of polyglycidyl methacrylate, 40g of styrene monomer, and 100g of water, stir and emulsify at room temperature for 10 minutes, heat to 60°C, and react for 12 hours, then fully wash with water to remove unpolymerized styrene and dissolved in Polyglycidyl methacrylate in water to obtain polystyrene microcapsules.

Embodiment 2

[0020] Example 2: Polyglycidyl methacrylate initiates divinylbenzene polymerization to prepare polymer microcapsules

[0021] Mix 4g of polyglycidyl methacrylate, 40g of divinylbenzene monomer, and 100g of water, stir and emulsify at room temperature for 10 minutes, heat to 70°C, and react for 12 hours, then fully wash with water to remove unpolymerized divinyl Benzene and polyglycidyl methacrylate dissolved in water to obtain polydivinylbenzene microcapsules.

Embodiment 3

[0022] Embodiment 3: Polyglycidyl methacrylate initiates the polymerization of 4-hydroxymethylstyrene to prepare polymer microcapsules

[0023] After mixing 4g polyglycidyl methacrylate, 40g 4-hydroxymethyl styrene monomer, and 100g water, stir and emulsify at room temperature for 30 minutes, heat to 70°C, and react for 12 hours, then fully wash with water to remove unpolymerized 4-hydroxymethylstyrene and polyglycidyl methacrylate dissolved in water to obtain poly(4-hydroxymethylstyrene) microcapsules.

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Abstract

The invention relates to a preparation method for a polymer microcapsule. The preparation method comprises the steps of using polyglycidyl methacrylate with surface activity and monomer polymerization function as a macromolecule emulgator and an initiator, triggering the polymerization of hydrophobe monomer under the condition of heating to obtain the polymer microcapsule. Compared with the current preparation method for the polymer microcapsule, the micromolecule emulgator and the initiator do not need to be added additionally, the system and the preparation process are simple, the post-treatment is simple and convenient, the universality is strong, and the cost is lower. The preparation method is suitable for the industrial large-scale production.

Description

technical field [0001] The invention relates to a method for preparing polymer microcapsules, in particular to using polyglycidyl methacrylate which has both surface activity and the function of initiating monomer polymerization as a macromolecular emulsifier and initiator, without adding additional small molecule emulsifiers. Under the condition of the agent and the initiator, the polymerization of the hydrophobic monomer is initiated to obtain the polymer microcapsule. Background technique [0002] Polymer microcapsules can protect substances from environmental influences, change the surface properties of substances, isolate active ingredients, reduce volatility and toxicity, and control sustainable release. They are widely used in medicine, food, cosmetics, coatings, pesticides, additives, etc. There is a wide range of applications in this field. According to the encapsulation mechanism and conditions, the preparation methods of polymer microcapsules can be divided into ...

Claims

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Application Information

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IPC IPC(8): C08F265/04C08F212/08C08F212/36C08F212/14C08F220/14C08F220/18C08F222/14B01J13/18
CPCB01J13/18C08F265/04C08F212/08
Inventor 张秋禹刘锦范新龙张宝亮张和鹏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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