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Polystyrene star-like sulfonic resin

A polystyrene and sulfonic acid resin technology, applied in the field of functional polymers, can solve problems such as resin breakage, and achieve the effect of reducing negative effects and increasing contact opportunities

Inactive Publication Date: 2010-11-17
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the sulfonic acid groups of the commonly used sulfonic acid resin are located inside the sphere, and there is a process of physical diffusion during the catalytic reaction (Wang Guiru, Catalyst and Catalysis, Second Edition, Dalian University of Technology Press [M], 2004), and in Resin damage due to solvent polarity changes during preparation and handling

Method used

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  • Polystyrene star-like sulfonic resin
  • Polystyrene star-like sulfonic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 0.5g PS-acyl-Cl resin (crosslinking degree: 7% divinylbenzene, particle size: 200μm) into a single-necked flask, add dimethyl sulfoxide, swell for 5h, add 8mL styrene, 0.05g CuCl, 0.08 g 2,2'-Bipyridine, vacuumize and nitrogen-fill alternately for 5 times, and react with magnetic stirring at 110°C for 24h under nitrogen atmosphere. A styrene-grafted PS-g-LPS resin was obtained.

[0027] After 0.5 g of the above resin was swollen with cyclohexane for 7 hours, 1.7 mL of 98% sulfuric acid and 1.45 mL of acetic anhydride were added, and the reaction was carried out at 90°C for 5 hours to obtain a polystyrene star sulfonic acid resin with a loading capacity of 4.9 mmol / g. .

Embodiment 2

[0029] Add 0.5g PS-acyl-Cl resin (crosslinking degree: 7% divinylbenzene, particle size: 600μm) into a single-necked flask, add N,N'-dimethylformamide, swell for 10h, add 5mL styrene, 0.15g CuCl, 0.17g pentamethyldiethylenetriamine, evacuated and nitrogen filled alternately for 5 times, and reacted with magnetic stirring at 105°C for 4h under nitrogen atmosphere. A styrene-grafted PS-g-LPS resin was obtained.

[0030] After 0.5 g of the above resin was swollen with pyridine for 2 h, 0.90 mL of concentrated sulfuric acid was added, and the reaction was carried out at 75° C. for 3 h to obtain a polystyrene star sulfonic acid resin with a loading capacity of 2.0 mmol / g.

Embodiment 3

[0032] Add 0.5g PS-acyl-Cl resin (crosslinking degree: 7% divinylbenzene, particle size: 50μm) into a single-necked flask, add toluene, swell for 1h, add 10mL styrene, 0.2g CuCl, 0.22g tetramethyl Ethylenediamine was vacuumized and nitrogen filled alternately 5 times, and reacted with magnetic stirring at 100° C. for 15 h under nitrogen atmosphere. A styrene-grafted PS-g-LPS resin was obtained.

[0033] After 0.5 g of the above resin was swollen with 1,2-dichloroethane for 3 hours, 1.0 mL of oleum was added, and the reaction was carried out at 80°C for 8 hours to obtain polystyrene star sulfonic acid with a loading capacity of 3.6 mmol / g. resin.

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Abstract

The invention discloses a star-like sulfonic resin and a preparation method thereof, and belongs to the field of functional polymers. The method is characterized in that: the sulfonic resin is prepared by performing an ATRP reaction on functionalized polystyrene resin and styrene and performing a sulfonation reaction. The resin prepared by the method has a functional sulfonic group positioned in a star-like structure, and has higher freedom degree compared with a common sulfonic resin. The sulfonic group content of the sulfonic resin, namely a dry resin, can be up to 0.7 to 4.9 mmol / g.

Description

technical field [0001] The invention belongs to the field of functional polymers. It specifically relates to a star-shaped sulfonic acid resin and its preparation. Background technique [0002] Sulfonic acid resin is a kind of strongly acidic cation exchange resin, which is widely used in the enrichment and detection of trace ions in water, as well as the separation and analysis of biochemical substances. STANFORD MOORE et al. (STANFORD MOORE, DARREL H. SPACKMAN, WILLIAM H. STEIN, ANALYTICAL CHEMISTRY [J], 1958, 30: 1185) analyzed amino acids and their related compounds with a sulfonic acid chromatographic column. In addition, sulfonic acid resin has a highly active surface, and its functional group is more acidic than sulfonic acid, or compared to other solid catalysts applied to bio-oil. Ion exchange resin is more convenient for separation and recycling, and has simple preparation, high activity, Advantages such as not corroding equipment, therefore can be used as a kind...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F293/00C08F8/36B01J39/20
Inventor 刘晓宁魏荣卿刘涛欧阳维
Owner NANJING UNIV OF TECH
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