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Amphiphilic triblock copolymer, preparation method thereof, and polyethersulfone hollow fiber membrane blend-modified by using amphiphilic triblock copolymer

A technology of blending modification and copolymer, applied in hollow filament manufacturing, fiber chemical characteristics, chemical instruments and methods, etc., can solve problems such as PVP that cannot be fundamentally solved, and achieve excellent blood compatibility and preparation method. Simple, good physicochemical stability

Inactive Publication Date: 2013-03-27
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method can only slow down the loss of PVP, and cannot fundamentally solve the problem of PVP precipitation

Method used

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  • Amphiphilic triblock copolymer, preparation method thereof, and polyethersulfone hollow fiber membrane blend-modified by using amphiphilic triblock copolymer
  • Amphiphilic triblock copolymer, preparation method thereof, and polyethersulfone hollow fiber membrane blend-modified by using amphiphilic triblock copolymer
  • Amphiphilic triblock copolymer, preparation method thereof, and polyethersulfone hollow fiber membrane blend-modified by using amphiphilic triblock copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 12 parts of vinylpyrrolidone, 0.2 part of trithioester and 0.02 part of 4,4'-azobis(cyanovaleric acid) into 88 parts of water, stir at room temperature to dissolve, then stir to raise the temperature and The reaction was carried out at a temperature of 75° C. for 6 hours, the reaction solution was precipitated with ether, and the obtained solid was vacuum-dried to obtain a light yellow translucent hard product with a yield of about 95%.

[0036] Add 11 parts of the obtained product, 6 parts of styrene and 0.02 part of azobisisobutyronitrile to 83 parts of dimethylformamide, stir at room temperature to dissolve, then stir to raise the temperature and maintain the temperature under nitrogen atmosphere. Reaction at 70°C for 15 hours, the reaction solution was precipitated with ether, the obtained solid was dried in vacuum at 60°C for 48 hours, and then extracted in a Soxhlet extractor with water and acetone for 7 days to remove the homopolymer polyvinylpyrrolidone and ...

Embodiment 2

[0039] Add 10 parts of vinylpyrrolidone, 0.2 parts of trithioester and 0.01 part of 4,4'-azobis(cyanovaleric acid) to 90 parts of water, stir at room temperature to dissolve, then stir to raise the temperature and The reaction was carried out at a temperature of 70° C. for 6 hours, the reaction solution was precipitated with ether, and the obtained solid was vacuum-dried to obtain a light yellow translucent hard product with a yield of about 95%.

[0040] Add 20 parts of the obtained product, 20 parts of styrene and 0.08 part of azobisisobutyronitrile to 60 parts of dimethylformamide, stir at room temperature to dissolve, then stir to raise the temperature and maintain the temperature under nitrogen atmosphere. Reaction at 75°C for 22 hours, the reaction solution was precipitated with ether, and the obtained solid was vacuum-dried at 60°C for 48 hours, and then sequentially extracted with water and acetone in a Soxhlet extractor for 8 days to remove homopolymer polyvinylpyrroli...

Embodiment 3

[0043] Add 14 parts of vinylpyrrolidone, 0.4 part of trithioester and 0.05 part of 4,4'-azobis(cyanovaleric acid) into 86 parts of water, stir at room temperature to dissolve, then stir to raise the temperature and The reaction was carried out at a temperature of 80° C. for 7 hours, the reaction solution was precipitated with ether, and the obtained solid was vacuum-dried to obtain a light yellow translucent hard product with a yield of about 95%.

[0044] Add 12 parts of the obtained product, 6 parts of acrylonitrile and 0.04 part of azobisisobutyronitrile to 82 parts of dimethylformamide, stir at room temperature to dissolve, and then stir to raise the temperature and maintain the temperature under nitrogen atmosphere. Reaction at 70°C for 17 hours, the reaction solution was precipitated with ether, and the obtained solid was vacuum-dried at 60°C for 48 hours, and then sequentially extracted with water and acetone in a Soxhlet extractor for 5 days to remove homopolymer polyvi...

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Abstract

The invention discloses an amphiphilic triblock copolymer with a structural general formula represented as the following. In the formula, when M1 is vinylpyrrolidone and M2 is acrylic acid, M3 is styrene or acrylonitrile or methyl methacrylate; or when M1 is vinylpyrrolidone and M2 is a chemical bond, M3 is styrene or acrylonitrile. m, n, p, q, are all lager than 1. A number-average molecular weight of the copolymer is 30000 to 100000, a glass-transition temperature of the copolymer is 90-180 DEG C, and a decomposition temperature of the copolymer is 180-430 DEG C. The invention also discloses a preparation method of the copolymer, and a polyethersulfone hollow fiber membrane blend-modified by using the amphiphilic triblock copolymer. The amphiphilic triblock copolymer provided by the invention is insoluble in water. When the amphiphilic triblock copolymer is blended with polyethersulfone and is prepared into a polyethersulfone hollow fiber membrane, the amphiphilic triblock copolymer is hard to precipitate. Therefore, the polyethersulfone hollow fiber membrane is provided with permanent hydrophilicity, protein pollution resistance and excellent blood compatibility. The polyethersulfone hollow fiber membrane can be used in the field of blood purification. The preparation method provided by the invention is simple, and is easy to operate. With the method, industrialization is easy to realize.

Description

technical field [0001] The invention belongs to the field of functional macromolecular materials and preparation thereof, and in particular relates to an amphiphilic triblock copolymer, a preparation method thereof and a polyethersulfone hollow fiber membrane modified by blending thereof. Background technique [0002] Polyethersulfone (PES) is a special engineering plastic. Because of its high glass transition temperature and good physical and chemical stability, it is often used as a functional polymer material with excellent performance to prepare flat membranes or hollow fiber membranes. In blood purification and water treatment and other fields. The research reports on using polyethersulfone or modifying polysulfone membranes to improve the biocompatibility of membranes in blood purification applications can be summarized into six categories (Zhao CS et al., Journal of Membrane Science, 2003, 214: 179; Zhao CS et al., Biomaterials, 2003, 24(21): 3747), including blendin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F226/10C08F220/06C08F212/08C08F220/44C08F220/14D01F6/94D01F1/10D01D5/24B01D71/68B01D71/80B01D67/00B01D69/08
Inventor 赵长生冉奋苏白海孙树东聂胜强赵伟峰李璐璐向韬
Owner SICHUAN UNIV
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