Anionic surface active initiator and preparation method thereof

Abstract

The invention relates to an anionic surface active initiator and a preparation method thereof. The method comprises the steps that a tertiary amine compound containing sulfonate anion and dodecyl is synthesized, and the tertiary amine compound itself is surfactant; meanwhile, tertiary amine and potassium persulfate can be subjected to an oxidation-reduction reaction at room temperature, cationic free radicals are formed on nitrogen atoms and converted into carbon free radicals at adjacent positions, free radical generation can be repeated multiple times and controlled flexibly, multiphase concatenated polymerization of styrene and butyl acylate and styrene and acrylamide is initiated successively on a water or oil interface, and a segmented copolymer is obtained. It is provided through experiments that the feed ratio of a monomer and the component ratio of the copolymer are very consistent, it is illustrated that the initiation efficiency of the initiator is high, the polymerization reaction condition is mild and controllable, the energy consumption is low, other organic solvents and emulsifiers are not used, the product is pure, and the requirements of green chemistry are completely met.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to an anionic surface-active initiator and a chemical preparation method thereof. The novel initiator can be used for the green synthesis of polyolefin polymer materials. Background technique [0002] Polyolefin is a very important polymer material, which has a wide range of applications in various fields. These materials are generally obtained by homopolymerizing or copolymerizing olefin monomers through initiators. According to different polymerization occasions, initiators can be divided into two categories: oil-soluble and water-soluble, corresponding to the polymerization of oil-soluble and water-soluble monomers respectively. In the special case of emulsion polymerization, water-soluble initiators can also initiate the polymerization of oil-soluble monomers by diffusing into micelles with the help of surfactant dispersion. In the existing polymer polymeriza...

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Problems solved by technology

In the development of polymer materials, people often spare no effort in the design of polymer structures, but the improvement of initiators is insufficient. Although the invention of living radical polymerization technology can make the synthesis of block copolymers easier, but Generally, these living free radical polymerizations can only be carried out in the organic phase, and cross-phase polymerization cannot be achieved. The block polymers synthesized have insufficient functionality and limited application value. A short board in the development of polymer-like materials, so there is still a lot of research to be done on the improvement of initiator functions

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