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Biological filter paper and its preparation method and application

A biological filtration and formulation technology, applied in the field of filter paper, can solve the problems of not being suitable for biopharmaceutical filtration, easy to fall off of its own particles, and difficult to clean, and achieve the effects of being conducive to popularization and use, low resistance, and easy to clean

Active Publication Date: 2016-08-03
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional paper filter material has uneven mesh, its own particles are easy to fall off, it is not easy to clean, and it has no filtering effect on particles and pathogenic microorganisms with a particle size below 15um, so it is not suitable for biopharmaceutical filtration

Method used

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  • Biological filter paper and its preparation method and application
  • Biological filter paper and its preparation method and application
  • Biological filter paper and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A biological filter paper prepared from the following components:

[0027]

[0028] The acetyl group content in the cellulose acetate is 40% to 42%;

[0029] The acrylonitrile content in the polyacrylonitrile fiber is greater than 92%;

[0030] The quantification of described biological filter paper is 320g / m 2 , thickness 0.60mm, water absorption 900g / m 2 .

[0031] Its preparation method comprises the following steps:

[0032] (1) Soak the glass fiber with 8% HCl at room temperature, and wash with water until there is no to no Cl atom;

[0033] (2) preparing a solution, stirring the ethylenediaminetetraacetic acid, dimethylacetamide and distilled water of the formula quantity to obtain a mixed solution;

[0034] (3) Glass fiber, cellulose acetate, nitrocellulose, and polyacrylonitrile fiber of formula quantity are dissolved in the mixed solution of step (2), fully stirred to obtain pasty substance;

[0035] (4) add sulfolane to the pasty substance of step (3)...

Embodiment 2

[0039] A biological filter paper prepared from the following components:

[0040]

[0041] The acetyl group content in the cellulose acetate is 40%-42%.

[0042] The acrylonitrile content in the polyacrylonitrile fiber is greater than 92%.

[0043] The quantification of the biological filter paper is 290g / m 2 , thickness 0.55mm, water absorption 1000g / m 2 .

[0044] Its preparation method comprises the following steps:

[0045] (1) Soak the glass fiber with 8% HCl at room temperature, and wash with water until there is no to no Cl atom;

[0046] (2) preparing a solution, stirring the ethylenediaminetetraacetic acid, dimethylacetamide and distilled water of the formula quantity to obtain a mixed solution;

[0047] (3) Glass fiber, cellulose acetate, nitrocellulose, and polyacrylonitrile fiber of formula quantity are dissolved in the mixed solution of step (2), fully stirred to obtain pasty substance;

[0048] (4) add sulfolane to the pasty substance of step (3), stir; ...

Embodiment 3

[0052] A biological filter paper prepared from the following components:

[0053]

[0054] The acetyl group content in the cellulose acetate is 40%-42%.

[0055] The acrylonitrile content in the polyacrylonitrile fiber is greater than 92%.

[0056] The quantification of described biological filter paper is 312g / m 2 , thickness 0.59mm, water absorption 890g / m 2 .

[0057] Its preparation method comprises the following steps:

[0058] (1) Soak the glass fiber with 8% HCl at room temperature, and wash with water until there is no to no Cl atom;

[0059] (2) preparing a solution, stirring the ethylenediaminetetraacetic acid, dimethylacetamide and distilled water of the formula quantity to obtain a mixed solution;

[0060] (3) Glass fiber, cellulose acetate, nitrocellulose, and polyacrylonitrile fiber of formula quantity are dissolved in the mixed solution of step (2), fully stirred to obtain pasty substance;

[0061] (4) add sulfolane to the pasty substance of step (3), s...

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Abstract

The invention discloses biological filter paper. A plurality of composite fibers, i.e. a glass fiber, a cellulose acetate, a nitrocellulose and a polyacrylonitrile fiber serve as the main materials of the filter paper. The filter paper is uniform in meshes and easy to clean, particles of the filter paper do not easily fall off; the filter paper can filter out particles with the partical size of less than 15 microns and pathogenic microorganisms; the biological filter paper is not reacted with the microorganisms, so that the biological filter paper can be applied in the fields of bioengineering and medical science.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a biological filter paper and its preparation method and application. Background technique [0002] In recent years, with the development of biological science and technology, half of the world's drugs have been biosynthesized, especially those with complex molecular structures. Biosynthesis is not only simpler than chemical synthesis, but also has higher economic benefits. However, the traditional paper filter material has uneven mesh, its own particles are easy to fall off, it is not easy to clean, and it has no filtering effect on particles and pathogenic microorganisms with a particle size below 15um, so it is not suitable for biopharmaceutical filtration. Contents of the invention [0003] In view of the deficiencies in the prior art, the present invention provides a biological filter paper, which has uniform mesh, self-particles are not easy to fall off, easy to clea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/18
Inventor 吴安波
Owner 杭州特种纸业有限公司
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