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Preparation method of macromolecular semipermeable material

A technology of semi-permeable materials and polymers, applied in the field of polymer semi-permeable materials, can solve the problems of high cost of use, short service life, easy damage, etc., and achieve the effect of long service life, difficult processing and preventing collapse

Inactive Publication Date: 2019-03-01
CHONGQING RUNZE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relationship between structure and performance has not been thoroughly studied at present, such as the contradiction between capture rate, interception rate and permeability treatment speed; polymer separation materials have a precise microstructure, are easy to be damaged, have a short service life, and are expensive to use

Method used

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  • Preparation method of macromolecular semipermeable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A PTFE material with a three-dimensional penetrating pore structure. There are stem holes on the stems surrounding the pores. The pore diameter is 100-1000nm; the stem diameter is 50-600nm, and the stem pore diameter is 30-200nm; the porosity of the pores is 50%- 90%, the porosity of the stem hole is 15-65%; the total surface area of ​​the stem, stem area:stem hole area=1-30:1.

[0028] Stem surface area image analysis: photographs of the material were taken with a scanning electron microscope (SEM photographs, magnified 10000-50000 times). Scan this photo with image processing equipment (the television image processor TVIP-4100II that Japan Avionics company produces, the television image processor that Latock system engineering company provides) stem and stem hole are separated to obtain stem and stem hole image, The image is processed by software to obtain the respective areas, and the ratio of the stem area to the total image area of ​​the stem hole area can be calcu...

Embodiment 2

[0040] The PTFE material of this embodiment has a three-dimensional penetrating pore structure. There are stem holes on the stems surrounding the pores. The pore diameter is 200±100 nm, the stem diameter is 125±75 nm, and the stem hole diameter is 50±20 nm.

[0041] The preparation method of described PTFE material, comprises the following steps:

[0042] (1) Preparation of spinning solution: dissolve polyvinyl alcohol in water to obtain a uniform solution with a concentration of 14-15%, add polytetrafluoroethylene (PTFE) emulsion (55-60%), so that the mass ratio of PTFE to polyvinyl alcohol is 2 -3:1; the preparation of the emulsion is to prepare high molecular polymer particles by emulsion polymerization, and the average particle diameter of the high molecular polymer particles is 15-40nm;

[0043] (2) Spinning: use high-voltage electrospinning equipment for electrospinning to obtain a uniform nanofiber precursor film; spinning voltage 15~20kV, distance 12~30cm;

[0044] (3...

Embodiment 3

[0051] The PTFE material of this embodiment has a three-dimensional penetrating pore structure, and there are stem holes on the stems surrounding the pores, 300nm

[0052] Wherein (I) the porosity of the pores is 60±10%, the porosity of the stem pores is 55±10%; the total surface area of ​​the stems, stem area:stem hole area=1-15:1.

[0053] Or (II) the porosity of the pores is 60±10%, and the porosity of the stem pores is 55±10%; the total surface area of ​​the stem, stem area:stem hole area=16-30:1.

[0054] Or (Ⅲ) the porosity of the pores is 80±10%, and the porosity of the stem pores is 30±15%; the total surface area of ​​the stem, stem area:stem hole area=1-15:1.

[0055] Or (IV) The porosity of the pores is 80±10%, and the porosity of the stem pores is 30±15%; the total surface area of ​​the stem, stem area:stem hole area=16-30:1.

[0056] The preparation method of described PTFE material, co...

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Abstract

The invention provides a preparation method of a macromolecular semipermeable material. An electrostatic spinning is adopted and comprises steps of preparation of spinning emulsion, spinning and sintering, wherein continuous sintering under controlled temperature and controlled pressure is adopted. The preparation method of the macromolecular semipermeable material with a novel structure is provided.

Description

technical field [0001] The invention relates to a preparation method of a polymer semipermeable material. Background technique [0002] Macromolecular material is a material based on polymer compounds. Polymer materials are materials composed of compounds with relatively high molecular weights, including rubber, plastics, fibers, coatings, adhesives, and polymer-based composite materials. The unique structure of polymer materials and the characteristics of being able to be modified and processed make them have incomparable and irreplaceable excellent properties of other materials, so they are widely used in various fields of science and technology, national defense construction and national economy, and have become a modern society. Indispensable materials in all aspects of daily necessities of life. [0003] Polymer separation material is a separation material made of polymer material with selective permeation function. Using such a semi-permeable material, it is driven ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/36B01D69/08B01D69/06B01D69/04B01D69/02B01D67/00B01D61/36
CPCB01D61/364B01D67/0004B01D69/02B01D69/04B01D69/06B01D69/08B01D71/36B01D2323/39B01D2325/02B01D2325/38
Inventor 周涛孙琦叶雷
Owner CHONGQING RUNZE PHARM CO LTD
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