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Water-solubility polyphenylene sulfide and preparation method thereof

A technology of polyphenylene sulfide and sulfonated polyphenylene sulfide, which is applied in the field of water-soluble polyphenylene sulfide and its preparation

Inactive Publication Date: 2012-05-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polyphenylene sulfide has good potential application value in the above-mentioned fields because of its excellent chemical resistance and thermal stability, it loses the possibility of application in the above-mentioned fields because it does not dissolve in aqueous solution

Method used

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  • Water-solubility polyphenylene sulfide and preparation method thereof
  • Water-solubility polyphenylene sulfide and preparation method thereof
  • Water-solubility polyphenylene sulfide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Sulfonate 10g of polyphenylene sulfide with 200ml of sulfuric acid with a fume content of 20-25% at 105°C for 4h, then when the temperature of the mixture is lowered to 15°C, first add the sulfonated polyphenylene sulfide The mass fraction is counted as 3% iron trichloride catalyst, and then 30ml of 1,4-dichloromethoxybutane is added dropwise thereto while stirring, and reacted for 4h at 30°C, and then use a salt content of 4% The ice-water mixture was purified and washed repeatedly until the pH value of the filtrate was 7, and the obtained solid was dried to constant weight; first, the obtained chloromethylated polyphenylene sulfide solid was added into 70 mL of trimethylamine aqueous solution with a concentration of 2 mol / L and stirred to dissolve, and then Adjust the pH to 4.0-5.0, and react at 20°C for 7 hours, then add absolute ethanol to precipitate, filter with suction, and wash repeatedly with absolute ethanol 4-5 times, and dry the obtained solid at 80-90°C to c...

Embodiment 2

[0044] Sulfonate 10g of polyphenylene sulfide with 150ml of sulfuric acid with a fume content of 20-25% at 80°C for 4 hours, then when the temperature of the mixture is lowered to 15°C, first add the sulfonated polyphenylene sulfide The mass fraction is counted as 5% ferric chloride catalyst, and then 50ml of 1,4-dichloromethoxybutane is added dropwise to it while stirring, and reacted for 6h at 15°C, and then use a salt content of 4% The ice-water mixture was purified and washed repeatedly until the pH value of the filtrate was 7, and the obtained solid was dried to constant weight; first, the obtained chloromethylated polyphenylene sulfide solid was added into 60 mL of diethanolamine aqueous solution with a concentration of 5 mol / L and stirred to dissolve, and then Adjust the pH to 8.0-9.0, react at 40°C for 10 hours, then add absolute ethanol to precipitate, filter with suction, and wash repeatedly with absolute ethanol for 4-5 times, and dry the obtained solid at 80-90°C to...

Embodiment 3

[0046] Sulfonate 10g of polyphenylene sulfide with 130ml of sulfuric acid with a fume content of 20-25% at 105°C for 2 hours, then when the temperature of the mixture is lowered to 15°C, first add the sulfonated polyphenylene sulfide The mass fraction is counted as 2% ferric chloride catalyst, then 70ml of chloromethoxyoctane is added dropwise to it while stirring, and reacted for 12h at 0°C, and then purified with an ice-water mixture with a salt content of 4%. And repeatedly washed until the pH value of the filtrate was 7, and the obtained solid was dried to constant weight; first, the obtained chloromethylated polyphenylene sulfide solid was added into 50 mL of trimethylamine aqueous solution with a concentration of 5 mol / L and stirred to dissolve, and then the pH was adjusted to 9.0- 10.0, and react at 20°C for 7h, add absolute ethanol to precipitate, filter with suction, and wash repeatedly with absolute ethanol 4-5 times, and dry the obtained solid at 80-90°C to constant ...

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Abstract

The invention discloses a water-solubility polyphenylene sulfide which has a structure formula as shown in the specification. The polyphenylene sulfide dissolves in water and saturated salt water and does not dissolve in methyl pyrrolidone, dimethylacetylamide, tetrahydrofuran, toluene, acetone, chloroform and ethanol; or the polyphenylene sulfide dissolves in the water and the saturated salt water, slightly dissolves in methyl pyrrolidone, dimethylacetylamide and ethanol, and does not dissolve in tetrahydrofuran, toluene, acetone and chloroform, wherein R is N<+>(CH3)3CL<->, NH<+>(CH3)2CL<->, N<+>(CH2CH2OH)3CL<-> and NH<+>(CH2CH2OH)2CL<->. Or the invention further discloses a preparation method of the water-solubility polyphenylene sulfide. The water-solubility polyphenylene sulfide prepared by the invention has the advantages of good water-solubility, temperature resistance and salt resistance, can be expected to not only broaden application of the water-solubility polyphenylene sulfide in the field of water-solubility functional polymer but also is applied to the fields with worst working environment, such as oil field, paper making, waste water treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of polyphenylene sulfide and its preparation, and in particular relates to a water-soluble polyphenylene sulfide and a preparation method thereof. Background technique [0002] Water-soluble amphoteric polymers (water-soluble amphoteric polymers) are water-soluble polymers containing positive and negative charge groups on the molecular chain. Compared with water-soluble anionic or cationic polymers containing only one charge, Their properties are relatively unique (Zang Qingda, Li Zhuomei. Journal of Functional Polymers, 1994, 7(1): 90.). For example, in terms of the nature of the force between molecules and within the molecular chain, for polyelectrolytes containing only one charge, the electrostatic force is only electrostatic repulsion, while for amphoteric polymers, the electrostatic force can be either repulsive or attractive, specifically Whether it is repulsion or attraction depends on the relative n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/02C08G75/029C08G75/0295
Inventor 李瑞海陶蓉崔伟张萌萌谢利平周鹏张帅
Owner SICHUAN UNIV
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