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Preparation method of water-soluble polystyrene nanoparticles

A polystyrene nanometer and water-soluble technology, which is applied in the field of preparation of water-soluble polystyrene nanospheres, can solve the problems of cumbersome process, difficult post-processing, harsh reaction conditions of seed swelling method, etc.

Active Publication Date: 2016-03-16
美中嘉和医学技术发展集团股份有限公司
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Problems solved by technology

The particle size of monodisperse polymer microspheres prepared by soap-free or low-soap emulsion polymerization is close to 1 μm, but it is difficult to prepare polymer microspheres with a particle size larger than 1 μm
The dispersion polymerization method developed in the 1970s can prepare monodisperse microspheres with a particle size of 1-100 μm. The preparation method is relatively complicated, and a large amount of organic solvents (such as ethanol) and stabilizers (polyvinylpyrrolidone, etc.) are required. This not only affects the purity of the polymer, but also brings difficulties to post-processing
The reaction conditions of the seed swelling method are harsh and the process is cumbersome

Method used

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  • Preparation method of water-soluble polystyrene nanoparticles
  • Preparation method of water-soluble polystyrene nanoparticles
  • Preparation method of water-soluble polystyrene nanoparticles

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Dissolve 1 mL of styrene in 99 mL of deionized water, place it in an irradiation bottle, and blow it with nitrogen. Irradiate in a cobalt source with a radiation dose of 10KGy to obtain a 1% polystyrene nanoparticle solution with a particle size of about 500nm.

Embodiment 2

[0021] Dissolve 1 mL of styrene in 99 mL of deionized water, place it in an irradiation bottle, and blow it with nitrogen. Irradiate in a cobalt source with a radiation dose of 100KGy to obtain a 1% polystyrene nanoparticle solution with a particle size of about 10nm.

Embodiment 3

[0023] Dissolve 1 mL of styrene in 99 mL of deionized water, place it in an irradiation bottle, and blow it with nitrogen. Irradiate in a cobalt source with a radiation dose of 30KGy to obtain a 1% polystyrene nanoparticle solution with a particle size of about 20nm.

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Abstract

The invention belongs to the technical field of preparation of high polymer materials, particularly relates to a preparation method of water-soluble polystyrene nanoparticles. The preparation method comprises the following steps: (1) mixing styrene monomers and deionized water so as to obtain a mixed solution A; (2) sealing the mixed solution A in an irradiation vessel, feeding nitrogen, then carrying out irradiation crosslinking by using a cobalt source or an electron beam to obtain a product, and carrying out freeze-drying or vacuum drying on the product to obtain a final product. The water-soluble polystyrene nanoparticles are prepared by an irradiation one-step method, the synthesis method is quick, simple, low in cost and high in yield, and the synthesized polystyrene nanoparticles can be dissolved in water well.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of water-soluble polystyrene nano-microspheres. Background technique [0002] Polystyrene microspheres have the characteristics of large specific surface area, strong adsorption, strong agglutination, strong surface reaction ability and easy recovery. The small particle size and volume of polystyrene microspheres make the whole particle have the characteristics of fast response and high reaction rate to external stimuli when used as a microreactor, and the large specific surface area can be used as a substrate for adsorption, desorption, chemical reaction and light scattering. For the reaction site, usually 1 g of polystyrene microsphere particles with a size of 100 nm provides a surface area of ​​tens of square meters to hundreds of square meters. [0003] At present, there are mainly four ways to prepare polystyrene microsp...

Claims

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Application Information

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IPC IPC(8): C08F112/08C08F2/46C08F2/54
CPCC08F2/46C08F2/54C08F112/08
Inventor 刘汉洲文万信樊文慧闫思齐
Owner 美中嘉和医学技术发展集团股份有限公司
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