Method for synthesizing diamine terminated polystyrene based on ATRP active polymerization method and application of diamine terminated polystyrene

Abstract

The invention provides a method for synthesizing diamine terminated polystyrene based on an ATRP active polymerization method and an application of the diamine terminated polystyrene. The method comprises the steps as follows: reacting potassium phthalimide and dibromomethane in anhydrous DMF, and carrying out purification to obtain an initiator N-bromomethyl phthalimide; then, carrying out atom transfer radical polymerization on the initiator and a styrene monomer under the action of a catalyst, and carrying out a reaction at 110 DEG C for 0.5-3 h to generate modified polystyrene with different molecular weights; next, reacting the modified polystyrene and potassium phthalimide in the anhydrous DMF to obtain polystyrene protected by a bisphthalimide group; and finally, reducing the polystyrene protected by a bisphthalimide group by hydrazine hydrate to obtain diamine terminated polystyrene. Then, the synthesized diamine terminated polystyrene is compounded with functional nanoparticles, so that the oil / water interfacial tension can be greatly reduced by 85% or above, and the synthesized diamine terminated polystyrene can be applied to the field of emulsion demulsification and thelike.

Description

technical field

[0001] The invention belongs to the technical field of reducing oil / water interfacial tension by compounding polymer-functionalized nanoparticles, and specifically relates to the synthesis of functionalized polystyrene, especially the preparation of diamine-terminated polystyrene based on ATRP active polymerization method The method and application are a method of synthesizing low-molecular-weight diamine-terminated polystyrene by using ATRP and compounding it with functional nanoparticles to reduce the oil / water interfacial tension. Background technique

[0002] Adding functionalized polymers into the oil / water mixed system can play a certain role in surface activity. Although the functionalized nanoparticles themselves have no interfacial activity, they can enhance the interfacial activity of the polymer after they are compounded with the polymer. This method can realize rapid reduction of oil / water interfacial tension at low concentration, and has simple o...