Preparation method and product of hollow polymer nanospheres with mesoporous

A technology of nano-microspheres and polymers, which is applied in the preparation of microspheres and microcapsule preparations. It can solve the problems of destroying the active sites on the surface of microspheres, unfavorable preparation of high molecular polymers, and reducing the application range of microspheres. The effect of simple method

Active Publication Date: 2020-06-02
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because it uses high-temperature calcination to remove the core and hole template, it is not conducive to the preparation of high molecular polymers, and it will destroy the active sites on the surface of the microspheres, which greatly reduces the scope of application of the microspheres.

Method used

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  • Preparation method and product of hollow polymer nanospheres with mesoporous
  • Preparation method and product of hollow polymer nanospheres with mesoporous
  • Preparation method and product of hollow polymer nanospheres with mesoporous

Examples

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Effect test

Embodiment 1

[0031] The preparation method of the hollow polymer nanosphere with mesoporous, its process schematic diagram is as figure 1 As shown, the specific steps are as follows: take polystyrene nanospheres (100mg) and add them to 5mL ethanol / 0.5% polyvinyl alcohol aqueous solution (v / v=1 / 10), stir to obtain polystyrene nanosphere suspension, The suspension was added to N with a syringe 2 In a 200 mL double-neck round bottom flask protected and filled with acrylamide (142 mg, 2.0 mmol), stir evenly, add 10 mL of polyvinyl alcohol aqueous solution with a mass fraction of 0.5%, and stir evenly. St was added sequentially with a syringe (to a final concentration of 64mmol L -1 ), 6mL ethylene glycol dimethacrylate ethanol solution (the final concentration of ethylene glycol dimethacrylate after adding is 20mmol·L -1 ), 4mL KPS aqueous solution (the final concentration of KPS after adding is 3·2mmol·L -1 ) and Zn(OAC) 2 2H 2 O aqueous solution (after adding Zn(OAC) 2 2H 2 The final ...

Embodiment 2-6

[0035] Implementation method and synthesis condition are all identical with embodiment 1, difference is to weigh Zn (OAC) respectively 2 2H 2 O, control the final concentration to 0.08mmol L -1 , 0.16mmol·L -1 , 0.32mmol·L -1 , 0.64mmol·L -1 , 1.28mmol·L -1 A core-shell structure wrapped with different zinc ion concentrations was obtained.

Embodiment 7-9

[0037] Implementation method and synthesis condition are all identical with embodiment 1, difference is to weigh Zn (OAC) respectively 2 2H 2 O, Mn(OAC) 2 4H 2 O and Co(OAC) 2 4H 2 O, so that the final concentration is 0.04mmol L -1 , to obtain core-shell structures wrapping different metal ions, respectively.

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Abstract

The invention relates to a preparation method and a product of mesoporous hollow polymer nanoparticles, and belongs to the field of functional polymer materials. The mesoporous hollow particles are prepared by adopting a hard template method and a hole template growth method; the sizes of the prepared polymer nanoparticles are 150 to 200 nm, the hollow diameters of the interiors are 90 to 110 nm, and a large number of mesoporous with the diameter of 2 to 60 nm exist in hole walls; the mesoporous hollow polymer nanoparticles prepared in the invention are stable in chemical property and are uniformly dispersed inside a water solution and an organic solvent; and the mesoporous hollow polymer nanoparticles can be of important application in the aspects of drug sustained release, food storage, fragrance release, pigment adsorption, self-healing and loading catalysis.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a method for preparing hollow polymer nanospheres with mesoporous pores, and also relates to a product prepared by the method. Background technique [0002] Hollow microspheres have received increasing attention and research due to their unique properties such as low density, large specific surface area, good thermal stability and surface permeability, and large internal space. Many materials such as inorganic materials (zeolite, hydroxyapatite, titanium dioxide, alumina, gallium oxide, gallium nitride, etc.), organic polymer materials (polystyrene, etc.), have been made into hollow spherical structures and present conventional The special functions that materials do not have, are widely used in many fields such as drug sustained / controlled release systems, chromatographic separation, catalysts, coatings, microreactors, and optoelectronic materials. In addition, the polymer hollow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/26C08F257/02C08F220/56B01J13/02
CPCB01J13/02C08F257/02C08J9/26C08J2201/0442C08J2201/0444C08F220/56
Inventor 马学兵谢广新
Owner SOUTHWEST UNIV
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