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Polyether sulfone grafted acrylic monomer copolymer and preparation method thereof

An acrylic and polyethersulfone technology, which is applied in the field of polyethersulfone grafted acrylic monomer copolymer and its preparation, can solve the problem that the grafting rate loses the thermodynamic advantage of the rigid molecular chain of PES, the molecular chain is not fully opened, and is prone to occur. Cross-linking phenomenon and other problems, to achieve the effect of improving hydrophilic properties, good solubility, and wide applicability

Inactive Publication Date: 2018-01-30
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome that in the prior art, when the copolymer of polyethersulfone grafted with acrylic monomer is prepared by heterogeneous co-irradiation reaction, PES is suspended in the solvent in the form of powder, and the molecular chain has no Fully open, the limitation of volume space leads to cross-linking, and the high grafting rate leads to the loss of the thermodynamic advantages of PES rigid molecular chains, and in order to prevent excessive cross-linking, it is necessary to add a polymerization inhibitor to introduce impurities. A polyethersulfone grafted acrylic monomer copolymer and its preparation method

Method used

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  • Polyether sulfone grafted acrylic monomer copolymer and preparation method thereof
  • Polyether sulfone grafted acrylic monomer copolymer and preparation method thereof
  • Polyether sulfone grafted acrylic monomer copolymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Accurately weigh 10 g of pretreated PES powder, dissolve it in 89.6 g of DMF solvent, add 0.4 g of MAA monomer (the mass ratio of PES to MAA is 5:0.2), and stir at 60°C for 24 hours to obtain a homogeneous solution; Access to N 2 After 15 min, the homogeneous solution was placed in 60 C O Under the source, the irradiation reaction was carried out at 20°C, the irradiation dose rate was 1kGy / h, and the absorbed dose was 17kGy.

[0045] After the irradiation reaction, the homogeneous solution was reverse-precipitated in an aqueous solution, washed several times, soaked in deionized water for 24 hours, and dried in a vacuum oven (80° C.) to constant weight. The grafting ratio (abbreviated as DG) of the product analyzed by elemental analysis and blending infrared standard curve was 1.6%.

Embodiment 2

[0047] Accurately weigh 10g of the pretreated PES powder, dissolve it in 89.2g of DMF solvent, add 0.8g of MAA monomer (the mass ratio of PES to MAA is 5:0.4), and stir at 60°C for 24h to obtain a homogeneous solution; Access to N 2 After 15 min, the homogeneous solution was placed in 60 C O Under the source, the irradiation reaction was carried out at 20°C, the irradiation dose rate was 1kGy / h, and the absorbed dose was 17kGy.

[0048] After the irradiation reaction, the homogeneous solution was reverse-precipitated in an aqueous solution, washed several times, soaked in deionized water for 24 hours, and dried in a vacuum oven (80° C.) to constant weight. The grafting rate of the product was 3.68% analyzed by elemental analysis and infrared standard curve of blending method.

Embodiment 3

[0050] Accurately weigh 10g of the pretreated PES powder, dissolve it in 88.4g of DMF solvent, add 1.6g of MAA monomer (the mass ratio of PES to MAA is 5:0.8), and stir at 60°C for 24h to obtain a homogeneous solution; Access to N 2 After 15 min, the homogeneous solution was placed in 60 C O Under the source, the irradiation reaction was carried out at 20°C, the irradiation dose rate was 1kGy / h, and the absorbed dose was 17kGy.

[0051] After the irradiation reaction, the homogeneous solution was reverse-precipitated in an aqueous solution, washed several times, soaked in deionized water for 24 hours, and dried in a vacuum oven (80° C.) to constant weight. The grafting rate of the product was 6.3% analyzed by elemental analysis and infrared standard curve of blending method.

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Abstract

The invention provides a polyether sulfone (PES) grafted acrylic monomer copolymer and a preparation method thereof. The method comprises the following steps: under anaerobic conditions, polyether sulfone and an acrylic monomer are subjected to a direct radiation grafting reaction in a homogeneous solution containing the polyether sulfone and the acrylic monomer, and therefore the grafted copolymer is obtained, wherein the solvent of the homogeneous solution is one or more selected from N-methylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide and dimethyl sulfoxide. The grafting ratioof the grafted copolymer provided by the invention is moderate, and the polyacrylic monomer can form a grafted-copolymer molecular structure with ''a multiple-point short chain'' on the polyether sulfone molecules, so that the polarity of the grafted copolymer and the flexibility of the molecular chain are effectively improved; the grafted copolymer is not easy to crosslink, so that the hydrophilic properties of the polyether sulfone can be obviously improved; the grafted copolymer has good solubility; and the grafted copolymer has very good pH response, temperature response, anti-pollution performance and charge effects, and has broader applicability.

Description

technical field [0001] The invention relates to a polyether sulfone grafted acrylic monomer copolymer and a preparation method thereof. Background technique [0002] Polyethersulfone (PES) is a polymer material widely used in industry with superior mechanical properties. Its creep resistance is very outstanding. Under higher temperature and larger load, the creep resistance is still very stable. , and polyethersulfone can still maintain good thermodynamic properties after long-term use at high temperatures. The molecular structure of polyethersulfone is composed of ether group, sulfone group and phenylene group. The ether group endows the flexibility of the polymer molecular chain, while the sulfone group and phenylene endow the polymer with excellent thermodynamic properties and processing properties. . These excellent thermodynamic properties make polyethersulfone widely used in the fields of electronics, electricity, machinery, medical treatment and aerospace. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/06C08F2/46B01D71/44
Inventor 侯铮迟黄健熹杨海军樊凯孙雪晴陆闰三
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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