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Preparation method of polysulfone-polyethylene epoxide block copolymer

A technology of polyethylene oxide and block copolymers, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of low molecular weight of block copolymers, wide molecular weight distribution, complicated operation steps, etc. Achieve the effects of excellent mechanical properties, narrow molecular weight distribution, and wide application prospects

Active Publication Date: 2007-01-31
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Document Macromolecules, 32,1697-1700, 1999 reported a kind of method for preparing polysulfone-polyoxyethylene block copolymerization, this method comprises four-step reaction, and operation step is more complicated, and the block copolymer of making Low molecular weight, wide molecular weight distribution

Method used

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  • Preparation method of polysulfone-polyethylene epoxide block copolymer
  • Preparation method of polysulfone-polyethylene epoxide block copolymer
  • Preparation method of polysulfone-polyethylene epoxide block copolymer

Examples

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Embodiment 1

[0026] 1. Preparation of polyethylene oxide whose end group is a halogen atom

[0027] Add 15.0g (10.0mmol) of polyethylene oxide with a molecular weight of 1500 and 3.0mL (40.0mmol) of thionyl chloride to the dry reaction flask, and heat the reaction system to 120°C under the protection of an inert gas. And react at this temperature for 10 hours, then distill and remove the residual thionyl chloride in the reaction bottle to obtain 15.0 g of polyethylene oxide whose end group is chlorine, yield: 100%.

[0028] figure 1 It is the infrared spectrum comparison between the polyethylene oxide whose terminal group is chlorine and the raw material of polyethylene oxide obtained by the reaction, 667cm -1 It is the absorption peak of -C-Cl bond.

[0029] 2. Preparation of polysulfone-polyoxyethylene block copolymer with 40% polyethylene oxide content

[0030] Add 15.0g (10.0mmol) in the dry reaction bottle by the polyethylene oxide that the terminal group that makes by embodiment 1...

Embodiment 2

[0036] 1. Preparation of polyethylene oxide whose end group is a halogen atom

[0037]Add 15.0g (10.0mmol) of polyethylene oxide with a molecular weight of 1500 and 30.0mL (400.0mmol) of thionyl chloride to the dry reaction flask, and heat the reaction system to 120°C under the protection of an inert gas. And react at this temperature for 10 hours, then distill and remove the residual thionyl chloride in the reaction bottle to obtain 15.0 g of polyethylene oxide whose end group is chlorine, yield: 100%. Its infrared spectrum and figure 1 same.

[0038] 2. Preparation of polysulfone-polyoxyethylene block copolymer with 5% polyethylene oxide content

[0039] Add 15.0g (10.0mmol) to the dry reaction bottle by the polyethylene oxide that the end group that makes in the first step is chlorine, 206g (718mmol) p-chlorodiphenyl sulfone, 135.5g (728mmol) 4,4'- Dihydroxybiphenyl, 120.5g potassium carbonate, 1500mL N, N-dimethylacetamide and 200mL toluene, heated the reaction system t...

Embodiment 3

[0045] 1. Preparation of polyethylene oxide whose end group is a halogen atom

[0046] Add 15.0g (10.0mmol) of polyethylene oxide with a molecular weight of 1500 and 60.0mL (800.0mmol) of thionyl chloride to the dry reaction flask, and heat the reaction system to 150°C under the protection of an inert gas. And react at this temperature for 10 hours, then distill and remove the residual thionyl chloride in the reaction bottle to obtain 15.0 g of polyethylene oxide whose end group is chlorine, yield: 100%. Its infrared spectrum and figure 1 same.

[0047] 2. Preparation of polysulfone-polyoxyethylene block copolymer with 70% polyethylene oxide content

[0048] In the dry reaction flask, add 15.0g (10.0mmol) by the end group that the first step makes is the polyethylene oxide of chlorine, 3.293g (11.5mmol) p-chlorodiphenyl sulfone, 3.996g (21.5mmol) 4, 4'-dihydroxybiphenyl, 3.56g potassium carbonate, 70mL N, N-dimethylacetamide and 20mL toluene, the reaction system was heated ...

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Abstract

The present invention relates to a preparation method of polysulfone-polyoxyethylene block copolymer. Said preparation method includes the following steps: firstly, making polyoxyethylene whose end group is hydroxyl group and thionyl halogen undergo the process of heating reaction under the protection of inert gas, evaporating and removing residual thionyl halogen to obtain the polyoxyethylene whose end group is halogen atom, then under the protection of inert gas stirring the above-metnioned obtained polyoxyethylene whose end group is halogen atom and dihaloarylsulfone, dihydric phenol, inorganic alkaline substance, organic solvent and arene, heating them and boiling, evaporating and removing arene and water, making copolymerization reaction so as to obtain the invented polysulfone-polyoxyethylene block copolymer.

Description

technical field [0001] The invention relates to a preparation method of a polysulfone-polyoxyethylene block copolymer. The prepared block copolymer has wide application prospects in the fields of biology, medical treatment, membrane separation and the like. Belongs to the technical field of functional polymer material preparation Background technique [0002] Polyethylene oxide is a water-soluble polymer with excellent biocompatibility. Polyethylene oxide and many hydrophobic polymers can form block copolymers. This type of material is amphiphilic because it has both a hydrophilic part and a hydrophobic part, and can form micelles in water. This special amphiphilic structure makes this kind of material widely used in the fields of biology, medical treatment and membrane separation. So far, people have developed many block copolymers containing polyethylene oxide, such as: polyacrylonitrile - polyethylene oxide block copolymer, polycaprolactone - polyethylene oxide block co...

Claims

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Application Information

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IPC IPC(8): C08G75/02C08G65/08B01D71/68C08G75/20
Inventor 房建华郭晓霞况永波
Owner SHANGHAI JIAO TONG UNIV
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