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Poly(4-methyl-1-pentene) hollow fiber membrane and preparation method thereof

A fiber membrane and hollow technology, which is applied in the field of poly-4-methyl-1-pentene hollow fiber membrane and its preparation, can solve the problems of tight production capacity, limited production capacity of downstream ECMO enterprises, high prices, etc., and achieve the expansion of scope , environmental protection and product safety advantages, the effect of enhancing gas permeability

Pending Publication Date: 2021-10-26
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the tight production capacity, the production capacity of downstream ECMO companies is limited and the price remains high

Method used

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  • Poly(4-methyl-1-pentene) hollow fiber membrane and preparation method thereof
  • Poly(4-methyl-1-pentene) hollow fiber membrane and preparation method thereof
  • Poly(4-methyl-1-pentene) hollow fiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Preparation of casting solution: mixing poly-4-methyl-1-pentene resin with poor solvent linseed oil and good solvent hydrogenated vegetable oil at 25°C to obtain spinning slurry;

[0027] The mass fraction of controlling poly-4-methyl-1-pentene is 40%, and the diluent mass fraction is 60%;

[0028] In the diluent, the mass fraction of good solvent is 95%, and the mass fraction of poor solvent is 5%;

[0029] Adjust the component content in the casting solution as follows: the mass fraction of poly-4-methyl-1-pentene resin is 40%, the mass fraction of linseed oil is 3%, and the mass fraction of hydrogenated vegetable oil is 57%;

[0030] 2) Preparation of nascent hollow fibers: Add the casting solution to a twin-screw extruder and extrude at 230°C;

[0031] 3) Condensation and solidification: through the spinning nozzle of the screw extruder, the nascent hollow fiber passes through the air section with a height of 0.3cm, and then enters the condensate at a temperatur...

Embodiment 2

[0035] 1) Preparation of casting solution: mix poly-4-methyl-1-pentene resin with dibutyl sebacate, behenic acid, and glycerin at 100°C to obtain spinning slurry, in which poly-4-methyl The mass fraction of 1-pentene resin is 35%, the mass fraction of dibutyl sebacate is 30%, the mass fraction of behenic acid is 30%, and the mass fraction of glycerin is 5%;

[0036] 2) Preparation of nascent hollow fibers: Add the casting liquid to a twin-screw extruder, extrude at 220°C, and the height of the air section is 0.8cm;

[0037] 3) Condensation and solidification: through the spinning nozzle of the screw extruder, the nascent hollow fiber passes through the air section with a height of 0.8cm, and then enters the condensate at a temperature of -2°C to solidify and form a film; the condensate is ethylene glycol and water 1:1 mixture;

[0038] 4) Extraction and washing: After the condensate is solidified to form a film, it is immersed in an ethanol extraction solution at a temperatur...

Embodiment 3

[0040] Change the mass fraction of poly-4-methyl-1-pentene resin in Step 1) of Example 1 to 20%, change the extrusion temperature in Step 2) to 260°C, and keep other conditions unchanged.

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PUM

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Abstract

The invention discloses a poly(4-methyl-1-pentene) hollow fiber membrane and a preparation method thereof, belonging to the technical field of polymer separation membranes. The hollow fiber membrane is prepared by adopting a thermally induced phase separation method, and a diluent used in the preparation process consists of a good solvent and a poor solvent of poly(4-methyl-1-pentene), wherein the good solvent is composed of one or more selected from dibutyl sebacate, behenic acid, hydrogenated vegetable oil and trioctyl trimellitate, and the poor solvent is composed of one or more selected from glycerin, linseed oil, tea oil and palm oil. According to the invention, a preparation process is simple, required equipment is simple, operability is high, large-scale production is easy, the prepared hollow fiber membrane is high in toughness, the pore structure, the inner diameter and the outer diameter of the prepared hollow fiber membrane can be adjusted, and the obtained hollow fiber membrane is particularly suitable for an oxygen neutralizer of ECMO.

Description

technical field [0001] The invention belongs to the technical field of polymer separation membranes, and in particular relates to a poly-4-methyl-1-pentene hollow fiber membrane and a preparation method thereof. Background technique [0002] Hollow fiber membrane is a new type of membrane technology product formed by the intersection of functional fiber material and separation membrane technology. It is a new type of membrane technology product with the fastest development, the largest scale and the highest output value in the field of separation membrane. It is one of the common key technologies to solve major problems such as water resource crisis, environmental pollution, and human organ diseases that the world is currently facing. [0003] Poly-4-methyl-1-pentene (PMP) hollow fiber membrane is a new type of fiber-type membrane with a tubular structure and self-supporting effect. It is used as a membrane lung material for extracorporeal membrane oxygenation (ECMO). ECMO ...

Claims

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Application Information

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IPC IPC(8): B01D69/08B01D67/00B01D69/02A61M1/18
CPCB01D69/088B01D67/0013B01D69/02A61M1/16B01D2325/021B01D2325/023B01D2325/24
Inventor 张琳孙戴鑫盛东海雒建斌
Owner TSINGHUA UNIV
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