Gemini cationic surface active initiator and preparation method thereof

A technology of surface activity and initiator, applied in the field of polymer material synthesis, can solve the problems of limited range of block polymer structure changes, insufficient practical application value, and inability to achieve cross-phase polymerization, etc., to achieve fast polymerization reaction and high conversion rate High, mild and controllable reaction conditions

Inactive Publication Date: 2016-08-03
NINGBO UNIV
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Problems solved by technology

The living radical polymerization technology developed in recent years can re-initiate the polymerization by the terminal free radicals, thus making the synthesis of block copolymers simple and convenient, but these living free radical polymerizations can only be carried out

Method used

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  • Gemini cationic surface active initiator and preparation method thereof
  • Gemini cationic surface active initiator and preparation method thereof
  • Gemini cationic surface active initiator and preparation method thereof

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Embodiment Construction

[0019] Below in conjunction with embodiment the present invention is described in further detail.

[0020] The preparation of gemini type anionic surfactant initiator:

[0021] 1. Mix and dissolve octyl glycidyl ether and ethylenediamine in absolute ethanol at a molar ratio of 2:1 as much as possible, and control the weight ratio of octyl glycidyl ether to ethanol in the range of 1:2.5 to 1:3. Control the reaction temperature in the range of 25-30°C under stirring, and the reaction time in 5-6 hours;

[0022] 2. Add propane sultone to the above reaction solution, the molar ratio of propane sultone and octyl glycidyl ether should be controlled at 1:1 as far as possible, and the reaction temperature should be controlled in the range of 30-40°C under stirring. Add solid LiOH after 1 to 2 hours, the moles of LiOH and propane sultone are the same, stir at room temperature for 2 to 3 hours until LiOH is completely dissolved;

[0023] 3. Concentrate and remove ethanol with a rotary...

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Abstract

The invention relates to a gemini cationic surface active initiator and a preparation method thereof. The method is characterized in that an amphiphilic compound containing disulfonic acid and bis-isooctane is synthesized, so that the compound has strong characteristic of an emulsification oiliness monomer, simultaneously, hydrophilic tertiary amine and potassium persulphate are subjected to an oxidation reduction reaction at normal temperature, cation free radical is formed on the nitrogen atoms, then conversed to the carbon free radicals with adjacent position, the generation of the free radical enables multi-time repetition with flexible control, a continuously initiated polyphase series-connection polymerization mode is realized, polymerization of styrene and vinyl acetate as well as styrene and acrylamide can be initiated on a water/oil interface in order, a segmented copolymer is obtained, the experiment proves that monomer feeding ratio and copolymer components ratio are consistent, initiation efficiency of the initiator is high, the polymerization condition in this mode is mild and controllable, energy consumption is low, other organic solvents and emulsifiers are not required, and products are pure and completely accord with green chemistry requirement.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a gemini-type anionic surface-active initiator and a chemical preparation method thereof. The novel initiator can be used for the green synthesis of various polyolefin polymer materials. Background technique [0002] Polyolefin is a very important general-purpose polymer material, and its structure is easy to adjust, so it has a wide variety and is widely used. 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. , water-soluble initiators can also diffuse into the tiny emulsion micelles to initiate the polymerization of oil-soluble monomers. In general, initiators are only a class of c...

Claims

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Application Information

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IPC IPC(8): C08F2/26C08F4/40C08F293/00C08F212/08C08F218/08C08F220/56C07C303/32C07C309/14
Inventor 孙怀艳李伟逊张瑞丰尚传洋江峰肖通虎龙能兵
Owner NINGBO UNIV
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