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Preparation method and product of polymer microsphere with core-shell structure and hollow structure

A core-shell structure and hollow structure technology, applied in the field of material science, can solve the problems of difficult to control the size of polymer microspheres, many kinds of preparation raw materials, complicated process control, etc. Effect

Inactive Publication Date: 2012-06-20
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of core-shell structure polymers involved in the above literature has many types of raw materials, cumbersome steps, complicated process control, and difficult operation, while the preparation of hollow structure polymer microspheres requires high temperature and long-term heat treatment, which makes the preparation cost high. Moreover, polymer microspheres have disadvantages such as difficult size control and poor uniformity.

Method used

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  • Preparation method and product of polymer microsphere with core-shell structure and hollow structure
  • Preparation method and product of polymer microsphere with core-shell structure and hollow structure
  • Preparation method and product of polymer microsphere with core-shell structure and hollow structure

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Experimental program
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Effect test

Embodiment 1

[0033] The raw material ratio that present embodiment adopts is as follows:

[0034]

[0035] Put 2,4-dihydroxybenzoic acid, formaldehyde, L-lysine and absolute ethanol into the reactor with condensing reflux device according to the above ratio and mix evenly; raise the temperature to 80°C under normal pressure, and react for 48 hours Discharge and filter at normal temperature to obtain the crude product of core-shell polymer microspheres. After washing 3 times with absolute ethanol at normal temperature and pressure, the product was dried in an oven at 60°C for 2 hours to obtain core-shell polymer microspheres Microsphere products, the diameter of microspheres is 500nm ~ 800nm, figure 1 Transmission electron micrographs of the prepared core-shell polymer microspheres.

Embodiment 2

[0037] The raw material ratio that present embodiment adopts is as follows:

[0038]

[0039] Put 2,4-dihydroxybenzoic acid, formaldehyde, L-lysine and absolute ethanol into the reactor with condensing reflux device according to the above ratio and mix evenly; raise the temperature to 80°C under normal pressure, and react for 48 hours Discharge and filter at room temperature to obtain the crude product of core-shell polymer microspheres, wash with water for 6 times at room temperature, place the product in an oven and dry at 50°C for 2 hours to obtain hollow polymer microspheres with a diameter of 500nm to 800nm , figure 2 Transmission electron micrographs of the prepared hollow polymer microspheres.

Embodiment 3

[0041] The raw material ratio that present embodiment adopts is as follows:

[0042]

[0043]

[0044] Put 2,4-dihydroxybenzoic acid, formaldehyde, L-lysine and absolute ethanol into the reactor with condensing reflux device according to the above ratio and mix evenly; raise the temperature to 80°C under normal pressure, and react for 48 hours Discharge and filter at normal temperature to obtain the crude product of polymer microspheres with core-shell structure, wash with water for 6 times at normal temperature, put the product in an oven and dry at 60°C for 2 hours, and obtain hollow structure polymer microspheres with a diameter of 800nm ​​to 1000nm. ball, image 3 Transmission electron micrographs of the prepared hollow polymer microspheres.

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Abstract

The invention belongs to the field of material science, and discloses a preparation method and a product of polymer microspheres with a core-shell structure and a hollow structure; the method comprises the following steps: adding 2,4-dihydroxy benzoic acid, aldehyde, L-lysine and a fatty alcohol organic solvent in a reaction container according to a certain ratio, well mixing, heating to 60 DEG C-80 DEG C, reacting for 12 h-48 h, filtering to obtain polymer microspheres crude product with a core-shell structure, washing with an organic solvent and water respectively, filtering and drying to obtain polymer microspheres with a core-shell structure and polymer microspheres with a hollow structure which have a diameter of 500 nm-1500 nm. The method has few raw material types, low cost, few preparation steps, simple equipment; polymer microspheres with a core-shell structure and a hollow structure can be prepared simultaneously by using same raw materials; the types and yield of the product can be adjusted as required; the prepared polymer microspheres has the advantages of good homogeneity and dimension controllability, and can meet application requirements for various fields.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a method for preparing polymer microspheres with a core-shell structure and a hollow structure and products thereof. Background technique [0002] 1. Core-shell polymer microspheres [0003] Core-shell polymer microspheres combine the characteristics of core-shell composite materials that contain two or more materials inside and outside, and can realize the multifunctionality of materials, and polymer microspheres have the characteristics of large surface area and controllable size. It has become a special functional material widely used in the fields of medicine, biochemistry, coatings and electronic information materials. In addition, in previous literature reports, polymer microspheres with core-shell structure are often used as precursors for the preparation of hollow polymer microspheres. [0004] 2. Hollow structure polymer microspheres [0005] Hollow-structured polymer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14
Inventor 刘应亮靳权郑明涛
Owner JINAN UNIVERSITY