Preparation device of porous microspheres and method thereof

A technology for porous microspheres and preparation devices, which is applied in the fields of microsphere preparation, microcapsule preparations, chemical instruments and methods, etc., can solve the problem of increasing the surface roughness of microspheres, reducing the oil-water interfacial tension, and weakening the driving force of droplet sphericity, etc. problems, to achieve the effect of improving the generation rate and pass rate, easy control, and enhancing thermal stability and controllability

Inactive Publication Date: 2019-02-01
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The addition of surfactants reduces the interfacial tension of oil and water and weakens the driving force to maintain the sphericity of droplets. At the same time, the Marangoni convection caused by the tension gradient may cause the increase of the surface roughness of the microspheres.

Method used

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  • Preparation device of porous microspheres and method thereof
  • Preparation device of porous microspheres and method thereof
  • Preparation device of porous microspheres and method thereof

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Embodiment Construction

[0030] A further detailed description is carried out below in conjunction with the description of the accompanying drawings:

[0031] figure 1 The system diagram of the present invention is given, and the specific structure includes an intermediate fluid injection pump and a syringe 1, an internal phase fluid injection pump and a syringe 2, an intermediate phase input channel 3, an internal phase input channel 4, an external phase fluid injection pump and a syringe 5, External phase input channel 6, microfluidic chip 7, main flow channel 8, ultraviolet irradiation chamber 9, porous microsphere collector 10 and other main components. Intermediate phase fluid injection pump and syringe 1, internal phase fluid injection pump and syringe 2, external phase fluid injection pump and syringe 5 respectively drive the intermediate phase fluid, internal phase fluid, and external phase fluid from the intermediate phase input channel 3, internal phase input channel 4, The external phase i...

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Abstract

The invention discloses a preparation device and a preparation method of porous microspheres. The preparation device comprises an external phase fluid injector, an intermediate phase fluid injector, an internal phase fluid injector and a microfluidic chip unit, wherein the microfluidic chip unit comprises an external phase input channel, an intermediate phase input channel, an internal phase inputchannel, a multinuclear double emulsion generating microstructure and a mainstream channel; the multinuclear double emulsion generating microstructure comprises a dual concentric glass capillary; a flow velocity controllable gas is introduced into the internal phase channel through the internal phase fluid injector; and a liquid containing nanoparticles is introduced into the external phase channel through the external phase fluid injector. Convenient control of the size and porous parameters of the porous microspheres is realized, and the nanoparticles help enhance the emulsion stability andcontrollability of the interfacial tension. According to the prepared porous microspheres, no components will be remained in the microspheres, thus not affecting the subsequent application. In addition, the porous microspheres for storing specific gases can be applied to chemical reactions.

Description

technical field [0001] The present invention relates to a method for preparing porous microspheres, in particular to a porous microsphere with the characteristics of controlled wettability by nanoparticles and adjustable gas transmission volume, which is designed to obtain porous microspheres with a certain size and porous parameters and no component residues. A method for preparing porous microspheres by gas-liquid-liquid microfluidic technology. Background technique [0002] Porous microspheres can be used in processes such as ion exchange, catalysis, solid phase extraction, chromatographic analysis, and solid support synthesis due to their excellent properties such as low density, high surface area, good stability and permeability, and the ability to adsorb various chemical substances. , has been widely used in energy, biology, chemical and other fields. The main process of preparing porous microspheres is to produce emulsion first, and then polymerize. Traditional emul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/00B01J13/02
CPCB01J13/02B01L3/50273B01L3/502784
Inventor 刘向东徐路遥曹祥吴梁玉陈永平
Owner YANGZHOU UNIV
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