Polyamide-alginate fiber dialysis membrane and preparation method thereof

A technology of dialysis membrane and polyamide, which is applied in semipermeable membrane separation, chemical instruments and methods, membranes, etc. Effect

Inactive Publication Date: 2018-11-16
SUZHOU BEC BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of the above-mentioned unsatisfactory biocompatibility and inability to remove middle molecular substances such as β2-microglobulin, the present invention provides a polyamide-seaweed fiber dialysis membrane and a preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 10kg of polyethyleneimine of 1 times the quality, 1kg of 0.1 times the quality of L-diethyl tartrate and 1kg of 0.1 times the quality of triethylamine in ethanol, and stir at 20-30°C for 3-10 days to obtain L-diethyl tartrate Copolymer of ethyl ester and polyethyleneimine 8.5kg. The K value of the copolymer of L-diethyl tartrate and polyethyleneimine is measured to be 110.

Embodiment 2

[0032] Preparation of poly‐2‐methyl‐2,3‐glycidyl methacrylate

[0033] Dissolve 1eq of ethylene glycol dimethacrylate 20kg in anhydrous dichloromethane, add 1.2eq of m-chloroperoxybenzoic acid 20.8kg in batches, heat at 42-45°C for 18 hours, and use 5% Sodium sulfite solution, 10% sodium bicarbonate solution, washed twice with distilled water, dried by adding anhydrous sodium sulfate to the organic phase, concentrated to obtain 18.2kg of oily substance 2‐methyl‐2,3‐epoxypropionic acid methacrylate ; 18.2kg of oily matter 2-methyl-2,3-glycidyl methacrylate methacrylate 18.2kg, 0.01eq dibenzoyl peroxide 0.19kg are added in dehydrated alcohol, 30 ℃ of reaction 60 Hour, suction filtration obtains white solid poly-2-methyl-2,3-glycidyl methacrylate 14.5kg. The K value of poly‐2‐methyl‐2,3‐glycidyl methacrylate was measured to be 75.

Embodiment 3

[0035] A polyamide-seaweed fiber dialysis membrane, the dialysis membrane is a hollow fiber membrane, comprising the following components by weight:

[0036] 25 parts polyamide,

[0037] 12 parts of seaweed fiber,

[0038] 5 parts of copolymers of L-diethyl tartrate and polyethyleneimine,

[0039] Poly-2-methyl-2,3-glycidyl methacrylate 5 parts,

[0040] 2 parts polylactic acid,

[0041] 1 part diatomaceous earth,

[0042] 1 part polyethylene glycol,

[0043] 1 part of hexanol or heptanol,

[0044] 0.5 parts of zinc oxide,

[0045] 40 parts of dimethyl sulfoxide.

[0046] The preparation method of the polyamide-seaweed fiber dialysis membrane adopts the dry and wet preparation process, and the steps are as follows:

[0047] (1) Prepare the spinning solution, mix each component together, filter after stirring evenly, remove impurities, place in the spinning solution tank for vacuum defoaming, and the time is 30 hours;

[0048] (2) Water is used as the core liquid and c...

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Abstract

The invention provides a polyamide-alginate fiber dialysis membrane and a preparation method thereof. The dialysis membrane is a hollow fiber membrane and is prepared from the following components inparts by weight: 25-30 parts of polyamide, 12-18 parts of alginate fibers, 5-10 parts of a copolymer of L-diethyl tartrate and polyethyleneimine, 5-10 parts of poly-2-methyl-2,3-epoxypropiorote ethylene glycol methacrylate, 2-8 parts of polylactic acid, 1-2 parts of diatomite, 1-5 parts of polyethylene glycol, 1-2 parts of hexanol or heptanol, 0.5-1 part of zinc oxide and 40-60 parts of dimethylsulfoxide, wherein for hollow fibers, the average inside diameter is 120-280 microns, and the wall thickness is 25-45 microns. The preparation method of the polyamide-alginate fiber dialysis membrane adopts a dry-wet method preparation process. The polyamide-alginate fiber dialysis membrane can effectively solve the technical problems that the biocompatibility is not ideal enough, and medium molecular substances such as beta 2-microglobulins cannot be eliminated and has an excellent application prospect.

Description

technical field [0001] The invention belongs to the field of materials, in particular to the technical field of polymer material dialysis membranes, in particular to a polyamide-seaweed fiber dialysis membrane and a preparation method of the dialysis membrane. Background technique [0002] In traditional chemical process separation methods, screening, filtration, centrifugation, concentration, distillation, evaporation, extraction, recrystallization, etc. are commonly used. However, it is difficult to realize the above-mentioned traditional separation methods for more demanding subdivision fields such as the separation of molecules, ions, and components in biological solutions. The emergence and application of polymer materials with selective separation function have solved the above separation problems. Membrane separation technology established since the 1960s has developed rapidly due to a series of advantages, and has been widely used in various fields of liquid and gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/56B01D67/00B01D69/02B01D69/08
CPCB01D67/0002B01D69/02B01D69/08B01D71/56B01D2325/24
Inventor 李苏杨徐勤霞成清明
Owner SUZHOU BEC BIOLOGICAL TECH
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