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Preparation method of water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) copolymer

A polyvinylpyrrolidone, polyaniline technology, applied in chemical instruments and methods, color-changing fluorescent materials, etc., achieves the effects of being suitable for large-scale application, simple synthesis route, and good compatibility with the environment

Inactive Publication Date: 2011-05-04
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved in the present invention is: to overcome the shortcomings of the existing water-soluble electrochromic polyaniline material and the preparation method of spatially dispersed soluble polyaniline, and to provide a novel water-soluble polyvinylpyrrolidone grafted polyaniline copolymer (PVP- g-PANI) and preparation method thereof

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  • Preparation method of water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) copolymer
  • Preparation method of water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) copolymer
  • Preparation method of water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) copolymer

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Embodiment Construction

[0031] figure 1 It is the structural diagram of PVP-g-PANI prepared by the present invention. PVP-g-PANI also contains polyvinylpyrrolidone water-soluble segment that does not participate in the nucleophilic substitution reaction, the grafted part of PVP and PANI, and polyaniline functional segment. It has good solubility in aqueous solutions and common organic solutions. , and has good electrochromic properties.

[0032] figure 2 It is a flowchart of the present invention. Add PVP, anhydrous acetic acid and aniline to the pre-reaction container for nucleophilic substitution reaction, add an initiator in a strong acidic environment to initiate the chain polymerization and chain growth of aniline, and then separate and purify to remove excess acid in the reaction system, initiate Agent, oligomer and part impurity, obtain the water-soluble polyvinylpyrrolidone grafted polyaniline copolymer PVP-g-PANI of dark green powder.

[0033] The factors that affect the PVP-g-PANI effe...

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Abstract

The invention discloses a preparation method of a water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) copolymer. In order to overcome the defects of the traditional preparation methods of a water-soluble electrochromic PANI material and space-dispersive-type soluble PANI, the novel preparation method of the PVP-g-PANI copolymer is provided, which has the advantages of simple process, high yield and small pollution to the environment, and a product has favorable dissolubility, electrical conductivity and controllability in infrared band electrochromic emissivity. The method comprises the following steps of: firstly, carrying out nucleophilic substitution reaction on aniline and the PVP in a faintly acid environment, then carrying out graft copolymerization on the PANI and the PVP, and finally, separating and purifying the copolymer. The method is simple in process, has high economic and social benefits, and can be used for obtaining the graft copolymer with favorable water solubility, and the reaction is easy to control and generates no corrosion and pollution.

Description

Technical field: [0001] The invention relates to a preparation method of a soluble conductive polymer functional material, in particular to a preparation method of a water-soluble polyvinylpyrrolidone grafted polyaniline (PVP-g-PANI) electrochromic functional copolymer. Background technique: [0002] Among many conductive polymers, polyaniline (PANI) has the advantages of readily available raw materials, simple synthesis method, high electrical conductivity, good environmental stability and excellent electrochromic performance. Through the corresponding modification of PANI, soluble polyaniline derivatives can be obtained, thereby improving the processability of the material, and making it more widely used in the fields of metal anticorrosion, electrostatic protection, electromagnetic shielding, electrochromism and luminescence. application. The electrochromic device made by using the electrochromic properties of polyaniline has become the material with the largest change i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F26/10C08F8/32C08G73/02C09K9/02
Inventor 盘毅谢凯王华林王珲洪晓斌李华信聪姚萌
Owner NAT UNIV OF DEFENSE TECH
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