A method for electrochemically regulated atom transfer radical polymerization with non-toxic ligands

Abstract

The invention discloses a toxic ligand free electrochemistry regulated atom transfer radical polymerization method. According to the method, under an electrochemical effect, no any toxic ligand is used, and five reactions raw materials namely monomers, a catalyst, an initiator, an electrolyte, and a solvent are mixed to make the monomers carry out atom transfer radical polymerization reactions to generate corresponding polymers. The reaction raw materials and reaction conditions of atom transfer radical polymerization reactions are improved; during the process of atom transfer radical polymerization reactions, an electrochemical effect is applied; the problem that a low valent transition metal catalyst is difficult to store and process in an atom transfer radical polymerization system is effectively solved; the shortages such as toxic ligand, pricy reducing agent, strong toxicity, volatility, and the like, are overcome, and the damage to the environment and the reaction cost are both reduced.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and more specifically relates to a non-toxic ligand electrochemically regulated atom transfer radical polymerization method, which is an electrochemically regulated atom transfer radical polymerization method. Background technique [0002] Anionic polymerization is the first living polymerization method discovered, which can keep the end of the polymer chain reactive during the polymerization process, so it can be used to prepare a preset relative molecular mass, low dispersion (narrow relative molecular mass distribution) and polymers with controllable functionality. However, the conditions of anionic polymerization are harsh and difficult to control. Combining the advantages of free radical polymerization, people have discovered a variety of controllable free radical polymerization methods, among which the most widely used method is atom transfer radical polymerization. Its mechanism is to us...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a non-toxic ligand electrochemically regulated atom transfer radical polymerization method, wherein through the reaction raw materials used in the atom transfer radical polymerization reaction, And the reaction conditions are improved, and electrochemical action is applied during the atom transfer radical polymerization reaction, which can effectively solve the storage and handling difficulties of the low-valence transition metal catalysts used in the existing atom transfer radical polymerization system, and can Overcome the disadvantages of expensive, highly toxic and volatile toxic ligands and reducing agents, and reduce environmental damage and reaction costs

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