Preparation method and device for preparing microspheres through gas

A preparation device and gas preparation technology, applied in the polymer field, can solve the problems of complex separation steps, complex preparation process, not green enough, etc., and achieve the effects of rapid preparation, simple method and uniform particle size

Inactive Publication Date: 2017-06-20
NANJING FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional method is slightly complicated in the preparation process, and due to the use of continuous phases or organic solvents, impurities will be introduced, which is not green enough, and the steps of post-treatment, curing, and separation are more complicated, which limits its application in biology, etc. Therefore, it is imperative to establish a simple and green new method. At the same time, the development of new methods and the synthesis of multifaceted microspheres are still a challenging task.

Method used

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  • Preparation method and device for preparing microspheres through gas
  • Preparation method and device for preparing microspheres through gas
  • Preparation method and device for preparing microspheres through gas

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preparation example Construction

[0038] Such as Figure 14 and see Figure 1-13 , the invention provides a preparation method utilizing gas to prepare microspheres, which comprises three steps:

[0039] The first step is to push the protective gas into the preparation device;

[0040] In the second step, the solution is dripped into the preparation device;

[0041] In the third step, the dripped solution is solidified into balls in the solution of the receiving device, and the target microspheres are obtained.

[0042] The first step is to introduce protective gas into the preparation device, where the protective gas can be nitrogen, and the protective gas is transferred from the third one-way pipe 103 of the preparation device to the reducing pipe part 200, and the flow rate of the protective gas is 0.2-0.8 L / min.

[0043] Said solution in the second step can be the mixed solution of pure sodium alginate and 0.2% ferric oxide solution and 2% sodium alginate solution, here in 2% sodium alginate solution, ...

Embodiment 1

[0048] In the first embodiment of the present invention, the method for preparing sodium alginate homogeneous microspheres using gas comprises three steps,

[0049] First, prepare sodium alginate microspheres. The preparation of sodium alginate microspheres includes preparing sodium alginate solution, preparing calcium chloride solution, and preparing the sodium alginate microspheres with a device for preparing sodium alginate homogeneous microspheres.

[0050] When preparing the sodium alginate solution, first prepare sodium alginate solutions of different concentrations. The specific operation is to weigh 0.1g, 0.5g, 1g, 2g, and 3g of sodium alginate, respectively, and dissolve them in 50ml of distilled water to obtain different concentrations. concentration of sodium alginate solution, and then add ferric oxide (made into 0.2% ferric oxide solution), the significance of adding ferric oxide here is: in order to characterize the successful preparation of microspheres. By obs...

Embodiment 2

[0056] Second embodiment of the present invention, utilize gas to prepare the method for chitosan homogeneous microsphere, comprise three steps:

[0057] First, chitosan microspheres were prepared. The preparation of chitosan microspheres includes preparing chitosan solution, preparing sodium hydroxide solution, and preparing the chitosan microspheres with a device for preparing chitosan homogeneous microspheres.

[0058] When configuring the chitosan solution, first configure chitosan solutions with different concentrations. The specific operation is to weigh 0.1g, 0.5g, 1g, 2g, and 3g of sodium alginate, respectively, and dissolve them in 60ml of 2% acetic acid aqueous solution. Promptly obtain the chitosan solution of different concentrations, then respectively add ferric oxide nano-microspheres (being made into 0.2% ferric oxide nano-microspheres solution), the meaning of adding nanometer ferric oxide microspheres here is: for Characterize the successful preparation of mi...

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Abstract

The invention provides a preparation method and device for preparing microspheres through gas. The preparation method comprises the steps of pushing protection gas into a preparation device, dropping solution into the preparation device and curing the added solution into spheres in solution in a receiving device to obtain target microspheres. The invention creatively provides the preparation method for preparing microspheres through gas, especially multi-surface incongruous microspheres; experiment equipment is simple and easy to assemble; utilized materials are all degradable materials with no pollution; the utilized method is simple and green and achieves quick preparation and uniform particle size; based on the advantages, all incongruous microspheres prepared through the method has wider potential application.

Description

technical field [0001] The invention belongs to the field of macromolecules, and in particular relates to a preparation method and device for preparing microspheres by using gas. Background technique [0002] Janus is a god with two faces (two-faced god) in ancient Roman mythology. It is a term used to indicate that particles have two different characteristics at the same time. It was first proposed by Degennes in his Nobel Prize-winning speech in 1991. This term was later visualized to represent non-centrosymmetric particles with different properties, namely Janus Particles. In fact, this kind of asymmetric or non-uniform sphere is not completely asymmetric in shape and shape, but also includes the asymmetry of the chemical composition and performance of the two sides of the microsphere. The special structure and surface chemical composition of Janus microspheres have Anisotropy makes it unique in terms of physical and chemical properties. For example, Janus microspheres c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/04
Inventor 黄超伯唐国胜郭中富许芊芊
Owner NANJING FORESTRY UNIV
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