Polymer hollow nano microspheres and preparation method thereof

A nano-microsphere and polymer technology, which is applied in the fields of microsphere preparation, microcapsule preparation, chemical instruments and methods, etc. Stability needs to be improved, practical application limitations, etc., to achieve the effects of excellent solvent resistance, low environmental dependence, and simple equipment

Inactive Publication Date: 2011-07-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-assembly method and the template method have strict requirements on the system, so their practical application is greatly limited, and the thermal and chemical stability of the emulsion polymerization method needs to be improved.
With the develop

Method used

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  • Polymer hollow nano microspheres and preparation method thereof
  • Polymer hollow nano microspheres and preparation method thereof
  • Polymer hollow nano microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Preparation of polyethersulfone hollow nanospheres:

[0045] Add 60g of polyethersulfone and 300g of dimethyl sulfoxide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 60°C, defoam at a vacuum degree of -0.08MPa for 1 hour, and mature for 12 hours to produce an EFI shell solution. Add 20g of polyvinyl alcohol and 200g of dimethyl sulfoxide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 90°C, defoam at a vacuum degree of -0.08MPa for 1 hour, and mature for 12 hours to produce an EFI core solution. A coaxial static spraying device is adopted, wherein the inner diameter of the core needle is 0.6mm, the solution flow rate is 5ml / h, the inner diameter of the shell needle is 1.2mm, the solution flow rate is 8ml / h, the spraying voltage is adjusted to 15kv, and the spraying distance is 10cm. The bath temperature is 30°C, the electrostatic spraying...

Embodiment 2

[0046] Embodiment 2: Preparation of polyphenylene sulfide sulfone amide hollow nanospheres:

[0047]Add 100g of polyphenylene sulfide sulfoneamide, 15g of sodium chloride, and 1000g of N-methylpyrrolidone into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 30°C, and defoam at a vacuum of -0.095MPa for 2 hours. Aging for 12 hours to make electrospray shell solution. Add 400g of polyethylene glycol, 600g of N-N dimethylformamide, and 400g of N,N-dimethylacetamide into a dissolving device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 30°C, and dissolve at a vacuum degree of -0.095MPa Degassing for 2 hours and aging for 12 hours to prepare the electrospray core layer solution. A coaxial static spraying device is adopted, in which the inner diameter of the core layer needle is 0.4mm, the solution flow rate is 3ml / h, the shell layer needle inner diameter is 0.9mm, the solution flow rate is 5ml / ...

Embodiment 3

[0048] Embodiment 3: Preparation of polyphenylene sulfide sulfone amide hollow nanospheres:

[0049] Add 200g of polyphenylene sulfide sulfone amide, 15g of calcium chloride, and 900g of N,N-dimethylacetamide into a dissolution device equipped with a stirrer and a thermometer, stir and dissolve at a temperature of 100°C, and dissolve at a vacuum degree of -0.085MPa Degassing for 2 hours and aging for 12 hours to prepare the EFI shell solution. Add 20g of chitosan and 300g of acetic acid into a dissolving device equipped with a stirrer and a thermometer, stir and swell at a temperature of 30°C until dissolved, defoam in a vacuum of -0.085MPa for 2 hours, and mature for 12 hours to make an EFI core layer solution. A coaxial static spraying device is adopted, wherein the inner diameter of the core needle is 0.4mm, the solution flow rate is 2ml / h, the inner diameter of the shell needle is 1.1mm, the solution flow rate is 9ml / h, the spraying voltage is adjusted to 25kv, and the sp...

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Abstract

The invention discloses polymer hollow nano microspheres and a preparation method thereof. The preparation method is characterized by comprising the following steps: adding 10-200 parts by weight of polymer A, 0-200 parts by weight of additive and 100-1000 parts by weight of solvent A into a dissolving kettle provided with a stirrer and a thermometer, dissolving by stirring at 30-100 DEG C, debubbling, and aging to obtain a polymer shell solution; adding 0-400 parts by weight of polymer B and 100-1000 parts by weight of solvent B into a dissolving kettle provided with a stirrer and a thermometer, dissolving by stirring at 30-100 DEG C, debubbling and aging to obtain a core solution; putting the polymer shell solution and the core solution in a high-voltage electrostatic field, and carrying out electrostatic spraying by a coaxial electrostatic sprayer to obtain polymer microspheres, wherein the inner diameter of the needle head of the core is 0.4-0.6mm, the solution flow rate is 1-5ml/h, the inner diameter of the needle head of the shell is 0.9-1.2mm, the solution flow rate is 5-10ml/h, the spraying voltage is adjusted to 5-25kV, the spraying distance is 1-10cm, and the temperature of the receiving bath is 10-50 DEG C; and removing core substances of the microspheres to obtain the polymer hollow nano microspheres.

Description

Technical field: [0001] The invention relates to a polymer hollow nano-microsphere and a preparation method thereof, belonging to the field of preparation of polymer hollow nano-microsphere materials. Background technique: [0002] Polymer hollow microspheres are a type of polymer material or polymer composite material with a unique structure and function, a diameter ranging from nanometer to micrometer, and a spherical or other geometric shape. The internal hollow part can be gas, liquid , drugs, catalysts and other compounds with special functions, while the outer layer is a shell formed by polymer materials. Due to its small size, hollow structure, good deformability and the ability to load various required substances inside, the polymer hollow microsphere material has a wide range of applications in the fields of biology, catalysis, electronics, optics, magnetism and coatings. prospect. [0003] There are many methods for preparing polymer hollow microspheres, which ca...

Claims

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Application Information

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IPC IPC(8): C08L81/06C08L81/00C08L79/04C08L5/08C08L5/04C08J9/28C08J9/26B01J13/02C09D181/06C09D181/00C09D179/04C09D105/08C09D105/04A61K47/34A61K47/36B01J32/00B01J31/06D21H19/00C14C11/00A61K8/84A61K8/73A61K47/10
Inventor 杨杰张全超王孝军王礼华刘静龙盛如
Owner SICHUAN UNIV
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