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Poly (4-methyl-1-pentene) hollow fiber alloy membrane as well as preparation method and application thereof

An alloy membrane and hollow technology, which is applied in the field of polyhollow fiber alloy membrane and its preparation, can solve the problems of oleophobicity and poor blood compatibility, etc., and achieve the goal of improving oleophobicity, improving blood compatibility, and the preparation method is simple and easy to control Effect

Active Publication Date: 2021-09-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a poly-4-methyl-1-pentene hollow fiber alloy membrane and its preparation method and application, so as to at least solve the problems of oleophobicity and poor blood compatibility in the prior art

Method used

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

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preparation example Construction

[0027] The preparation method of poly(4-methyl-1-pentene) hollow fiber alloy membrane provided by the invention comprises the following steps: (1) poly(4-methyl-1-pentene), fluoropolymer and The diluent is mixed uniformly to obtain the mixture; (2) the mixture is made into a hollow fiber; (3) the hollow fiber is solidified into a film to obtain a hollow fiber alloy membrane precursor; (4) the diluent in the hollow fiber alloy membrane precursor is removed, A poly(4-methyl-1-pentene) hollow fiber alloy membrane was obtained.

[0028] The diluent is a single-component solvent or a mixed solvent containing more than one component with a boiling point greater than 200°C, and the diluent meets the following conditions: the diluent can react with poly(4-methyl-1 -pentene) and the fluoropolymer form a homogeneous solution, and the homogeneous solution phase-separates in the temperature range of 15-50°C. Phase separation means that when the external conditions such as temperature cha...

Embodiment 1

[0038] Prepare poly(4-methyl-1-pentene) hollow fiber alloy membrane product by following method:

[0039] (1) Weigh poly(4-methyl-1-pentene) resin, ethylene-chlorotrifluoroethylene copolymer resin, hexacid and glycerol triacetate, add it into the mixer and mix uniformly to obtain the mixture, wherein The mass components in the mixture are as follows: 20wt% poly(4-methyl-1-pentene) resin, 10wt% ethylene-chlorotrifluoroethylene copolymer resin, 70wt% palmitic acid and triacetin , wherein the mass ratio of palmitic acid and glycerol triacetate is 3:1;

[0040] (2) Put the mixture in step (1) into a twin-screw extruder, melt and knead at 260°C, and extrude through a spinneret to form a hollow fiber to obtain a hollow fiber. The output speed is 80m / min;

[0041] (3) After the hollow fiber in step (2) passes through a room temperature of 25° C., it is directly cooled in a cooling bath of 40° C. for 2 seconds to realize solidification and film formation, and obtain a hollow fiber a...

Embodiment 2

[0044] Increase the mass component of poly(4-methyl-1-pentene) resin in the mixture in embodiment 1 to 29wt%, and the mass component of ethylene-chlorotrifluoroethylene copolymer resin in the mixture is reduced to 1wt% , other conditions remain unchanged.

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PUM

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Abstract

The invention provides a poly (4-methyl-1-pentene) hollow fiber alloy membrane as well as a preparation method and application thereof. The poly (4-methyl-1-pentene) hollow fiber alloy membrane comprises 100 parts by weight of poly (4-methyl-1-pentene) and 0.1-50 parts by weight of a fluorine-containing polymer. The poly (4-methyl-1-pentene) hollow fiber alloy membrane provided by the invention not only has excellent mechanical strength and gas permeability, but also has excellent oleophobicity and blood compatibility, and can be used in a membrane oxygenator and an in-vitro membrane lung oxygenation system.

Description

technical field [0001] The invention relates to the field of membrane technology, in particular to a poly(4-methyl-1-pentene) hollow fiber alloy membrane and a preparation method and application thereof. Background technique [0002] Extracorporeal Membrane Oxygenation (ECMO) system, which replaces the function of human lungs to regulate the oxygen and carbon dioxide levels in the blood, has become an important medical treatment for acute respiratory diseases, waiting for lung transplantation and cardiovascular surgery. equipment. ECMO consists of membrane oxygenator, blood pump, gas mixer, various pipelines and monitors. The membrane oxygenator is the core component of the ECMO system. The hollow fiber membrane in the membrane oxygenator is the key to avoid blood gas contact and realize gas exchange. Therefore, the hollow fiber membrane must have good gas permeability, biocompatibility and Lower blood infiltration. [0003] Poly-4-methyl-1-pentene (PMP) has become the mo...

Claims

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Application Information

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IPC IPC(8): B01D69/08B01D71/32B01D71/26A61M1/36
CPCB01D69/08B01D71/32B01D71/26A61M1/3621
Inventor 林亚凯吴芳宇汪林王晓琳
Owner TSINGHUA UNIV
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