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Method for simply and efficiently synthesizing poly(hydroquinone)

A technology of polyhydroquinone and hydroquinone, applied in the field of simple and efficient synthesis of polyhydroquinone, achieving good application prospects and simple operation

Inactive Publication Date: 2015-09-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all methods for preparing PHQ still cannot take into account the characteristics of easy operation, high yield, and low cost.

Method used

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  • Method for simply and efficiently synthesizing poly(hydroquinone)
  • Method for simply and efficiently synthesizing poly(hydroquinone)
  • Method for simply and efficiently synthesizing poly(hydroquinone)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Accurately weigh 1.5g hydroquinone and dissolve in 35mL 0.1mol / L H 2 SO 4 In the solution reaction medium, accurately weigh 6.218g ammonium persulfate and dissolve in 15mL 0.1mol / L H 2 SO 4 in solution. The above two solutions were heated to 50°C in a water bath. Under magnetic stirring, the oxidizing agent solution was added into the monomer solution in a one-time pouring manner. After the dropwise addition, the reaction was continued until 24h. After the reaction is over, pour the reaction solution into a centrifuge tube for centrifugation. After the polymer settles, use a dropper to absorb the upper layer liquid and wash it with deionized water. After dispersing, wash it again; repeat the above operation until the upper layer liquid in the centrifuge tube is clear and washed until it is ready for use. 0.01mol / L BaCl 2 Solution test clear solution without SO 4 2- ion so far. The product was transferred to a watch glass, and dried in an air atmosphere at a tem...

Embodiment 2～3

[0028] Repeat Example 1, change the acidic medium solution for dissolving the monomer and oxidant, so that the acidic medium solution is 0.1mol / L hydrochloric acid solution and 0.1mol / L acetic acid solution respectively. The yields of final products were 38.3%, 45.0%.

Embodiment 4～7

[0030] Repeat Example 1, change the way of adding the oxidant to 1 drop every 3 seconds, and change the oxygen ratio, the oxygen ratio is 2:1, 1.5:1, 1:1, 0.5:1 respectively. The yields of final products were 43.7%, 37.4%, 34.0%, 14.7%.

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Abstract

The invention relates to a method for simply and efficiently synthesizing poly(hydroquinone). The method comprises the following steps of dissolving hydroquinone into an acid water medium and mixing uniformly to prepare a monomer solution; dissolving an oxidizing agent into deionized water to prepare an oxidizing agent solution; adding the oxidizing agent solution into the monomer solution; after the mixed reaction liquid reacts completely in the water bath environment at a certain temperature, separating the product to obtain poly(hydroquinone). Compared with the prior art, a chemical oxidative polymerization method is adopted in the invention, so that poly(hydroquinone) can be synthesized at the water bath temperature not more than 100 DEG C. The method is economical and effective, is simple in operation, and has the potential of synthesizing in batches and large scales. The obtained product has well application prospects, and is expected to be applied to the fields of antioxidants, noble metal ionic adsorption treatment in waste water, biosensors and the like.

Description

technical field [0001] The invention relates to a polymer synthesis method, in particular to a simple and efficient method for synthesizing polyhydroquinone. Background technique [0002] Polyhydroquinone (PHQ) is a polymer with redox activity. Polyhydroquinone contains only quinone and hydroquinone in the main chain, and is a polymer with an aromatic conjugated system. This polymer not only has the characteristics of low redox potential and fast electron transfer speed, but also can perform two-electron Redox, with high charge density and good redox reversibility (Zhang Aijuan, Zhang Wenjing, Zhang Yongjun, etc. Research progress of redox active polyhydroquinone, Polymer Bulletin, 2011, (5): 17 -26.). It is precisely because PHQ has such excellent characteristics that it can be used in antioxidants, biosensors and other fields. In recent years, PHQ has been especially favored by many researchers. [0003] The preparation methods of polyhydroquinone generally include alk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G67/00
Inventor 黄美荣李新贵郭世坚
Owner TONGJI UNIV