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Hydrophilic treatment process of pet precision infusion filtration nuclear pore membrane

A treatment process and technology of nuclear pore membrane, which is applied in the field of infusion precision filtration, can solve the problems such as the inability to directly apply PET precision infusion filtration nuclear pore membrane, and achieve the effect of improving surface hydrophilicity, simple operation and good durability

Active Publication Date: 2021-01-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some reports have been made on the modification treatment technology of PET membrane materials, they cannot be directly applied to the treatment of nuclear pore membranes for precision infusion filtration of PET, because the treatment technology of nuclear pore membranes for precision infusion filtration not only improves hydrophilicity, but also Need to meet multiple requirements at the same time, such as maintenance or improvement of flux, low toxicity in line with medical standards, low residue, improvement of hemostatic effect, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A process for hydrophilizing the nuclear pore membrane of PET precision infusion filtration, the specific steps are: preparing 1wt.% ammonium persulfate solution, polyethylene terephthalate precision infusion nuclear pore membrane with a solid-liquid ratio of 1:60 Immerse in the ammonium persulfate solution, add 0.5wt.% sodium bisulfite, add copper nitrate with 1.5% ammonium persulfate mass as a catalyst, and react at 50°C for 1 hour. After the reaction is complete, take out the nuclear pore membrane and wash it with water for 3 times. Then put the nuclear pore membrane into 0.1wt.% acrylic acid solution, the solid-to-liquid ratio is 1:50, graft at 70°C for 4 hours, take out the nuclear pore membrane and wash it with water for 3 times to remove the unreacted acrylic acid on the surface of the nuclear pore membrane and self-polymerized polyacrylic acid, and dried at 50°C for 30min. After treatment, the contact angle of PET nuclear pore membrane decreased from 85.9° to 68...

Embodiment 2

[0026] A PET precision infusion filtration nuclear pore membrane hydrophilization process, the specific steps are: prepare 1wt.% potassium persulfate solution, polyethylene terephthalate precision infusion nuclear pore membrane with 1:50 solid-liquid Than immersed in potassium persulfate solution, add 0.5wt.% sodium bisulfite, add ferrous chloride with 1% of potassium persulfate mass as catalyst, react at 60°C for 30min, take out the nuclear pore membrane after the reaction is completed, wash with water for 3 %, then put the nuclear pore membrane into 4wt.% acrylic acid solution, the solid-to-liquid ratio was 1:100, grafted at 50°C for 1h, took out the nuclear pore membrane and washed it with water for 3 times to remove the unreacted surface of the nuclear pore membrane Acrylic acid and self-polymerized polyacrylic acid were dried at 50°C for 30 minutes. After treatment, the contact angle of PET nuclear pore membrane decreased from 85.9° to 52.9°.

Embodiment 3

[0028] A PET precision infusion filtration nuclear pore membrane hydrophilization process, the specific steps are: prepare 5wt.% ammonium persulfate solution, polyethylene terephthalate precision infusion nuclear pore membrane with 1:100 solid-liquid Than immerse in ammonium persulfate solution, add 2wt.% sodium bisulfite, add copper nitrate and 0.5% ferric chloride of 1% ammonium persulfate mass as a catalyst, react at 60°C for 30min, and take out the nuclear pore membrane after the reaction is completed , washed 3 times with water, then put the nuclear pore membrane into 1wt.% acrylic acid solution with a solid-to-liquid ratio of 1:50, grafted at 70°C for 1 hour, took out the nuclear pore membrane and washed 3 times with water to remove the surface of the nuclear pore membrane Unreacted acrylic acid and self-polymerized polyacrylic acid were dried at 50°C for 30 minutes. After treatment, the contact angle of PET nuclear pore membrane decreased from 85.9° to 64.0°.

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PUM

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Abstract

The invention discloses a PET (polyethylene terephthalate) precision infusion filtering nuclear pore membrane hydrophilization treatment process. The process is characterized by including steps of aninitiator bath preparation, initiating treatment, grafting bath preparation, grafting treatment and the like. The process is simple, safe and low in equipment requirement, membrane intrinsic mechanical performances and nuclear pore membrane structures are unchanged after treatment, membrane surface hydrophilicity can be remarkably enhanced, and accordingly air interception capacity, liquid retaining height, liquid flux of membranes can be increased, and low toxicity and high durability are realized. By adoption of the process, infusion functions of PET precision infusion filtering nuclear poremembranes can be improved, and infusion safety is improved.

Description

technical field [0001] The invention relates to a polyethylene terephthalate precision infusion filtration nuclear pore membrane acrylic acid chemical grafting hydrophilic treatment process, which belongs to the technical field of infusion precision filtration. Background technique [0002] Polyethylene terephthalate (PET) precision infusion filtration nuclear pore membrane has high physical and mechanical properties, and at the same time has excellent chemical stability and thermal stability, low gas and water vapor permeability, non-toxic, and good biological safety. However, the PET molecular chain does not contain active groups and is naturally hydrophobic. Precision infusion filtration nuclear pore membrane needs to have automatic liquid stop function, but the hydrophobic material will increase the time for the nuclear pore membrane to be wetted by the drug solution, delay the infusion preparation time, and the unwetted part of the membrane will also guide air in, thus ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D67/00B01D69/02B01D71/78
CPCB01D67/0093B01D69/02B01D71/78B01D2323/02B01D2323/38B01D2325/36
Inventor 蒋秋冉吴逸昌李海迪朱泉沈丽邱夷平
Owner DONGHUA UNIV
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