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Polymer surfactant and core-shell amphiphilic polymer microsphere as well as preparation method thereof

A technology of surfactants and macromolecules, applied in the direction of grafted polymer adhesives, adhesive types, adhesives, etc., can solve the problems of difficult control of the structure, high requirements for experimental conditions, cumbersome process routes, etc., and achieve simple routes , the effect of structural stability

Inactive Publication Date: 2011-03-02
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are many methods for preparing core-shell microspheres, there are still some problems that need to be solved, such as: cumbersome process route; high requirements for experimental conditions, difficult to obtain raw materials; difficulty in large-scale preparation, low efficiency; difficult structure control, etc.
These shortcomings restrict the popularization and application of this material to a large extent.

Method used

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  • Polymer surfactant and core-shell amphiphilic polymer microsphere as well as preparation method thereof
  • Polymer surfactant and core-shell amphiphilic polymer microsphere as well as preparation method thereof
  • Polymer surfactant and core-shell amphiphilic polymer microsphere as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: the preparation of macromolecule surfactant (1):

[0042]

[0043] (1) Add sodium hydroxide (8g, 0.20mol), 40ml deionized water, tetra-tert-butylammonium bromide (3.2g, 0.01mol), THF (40ml) and dodecanethiol ( 40.48g, 0.20mol), stirred mechanically, cooled to room temperature, added CS 2 (15.23g, 0.20mol), after cooling to room temperature, α-bromopropionic acid (30.6g, 0.20mol) was added. Cool to room temperature (20° C.) with a water bath, remove the water bath, and stir at room temperature for 20 h. The oil bath was heated to 50°C for 3h. Stop heating, adjust the acidity with dilute hydrochloric acid solution, make the pH of the system 1, extract with an appropriate amount of ether, separate the liquid, separate the upper yellow organic layer, dry the organic layer with anhydrous sodium sulfate, and remove it by rotary evaporation with a rotary evaporator Tetrahydrofuran was used as a solvent to obtain an orange viscous liquid, which was left at r...

Embodiment 2

[0046] Embodiment 2: the preparation of a kind of macromolecule surfactant (2).

[0047] (1) The operation steps are the same as step (1) of Example 1 to obtain a bright yellow solid (A).

[0048] (2) In a four-neck flask equipped with a stirrer, a condenser, a thermometer and a vent pipe, add 3.51 g of the obtained bright yellow solid (A) (0.01 mol) and 40 g of toluene, stir and dissolve to obtain a transparent solution 1.

[0049] (3) Add 14.4 g (0.2 mol) of acrylamide and 1.68 g (10 mmol) of azobisisoheptanonitrile into solution 1, stir and dissolve under nitrogen protection. The temperature was raised to 50°C, and the reaction was stirred for 8 hours. Then, most of the organic solvent was removed under reduced pressure to obtain a light yellow macromolecular surfactant as a solid. Number average molecular weight (Mn) is 1810; weight average molecular weight (Mw) is 2240; polydispersity index: 1.24.

Embodiment 3

[0050] Embodiment 3: the preparation of macromolecule surfactant (3)

[0051]

[0052] (1) Same as step (1) of Example 1 to obtain a bright yellow solid (A).

[0053] (2) In a four-necked flask equipped with a mechanical stirrer, a condenser tube, a thermometer and a ventilation tube, add 3.51 g of the yellow solid (A) (0.01 mole) obtained in step (1) and 40 g of toluene, stir and dissolve, and obtain a transparent Solution 2.

[0054] (3) Add 3.6 g (0.05 mol) of acrylic acid, 0.05 mol of methacrylic acid, and 0.21 g (1.25 mmol) of azobisnitrile valeric acid into solution 1, stir and dissolve under nitrogen protection. The temperature was raised to 65°C, and the reaction was stirred for 8 hours. Then, 6.4 g (0.05 mol) of isopropyl acrylate and 15 g of toluene were added, and the reaction was continued at 65° C. for 8 hours. Then, most of the organic solvent was removed under reduced pressure to obtain a light yellow macromolecular surfactant as a solid. Number average m...

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Abstract

The invention relates to a polymer surfactant and a core-shell amphiphilic polymer microsphere as well as a preparation method thereof. The polymer surfactant is a compound containing a trithiocarbonate structure, and the chemical structure of the surfactant is shown in the specification, wherein R1 is shown in the specification; R2 represents CH3 and H; M represents Na, K, (CH3)4N and (C2H5)4N; M1 is one or a mixture of acrylic acid, methacrylic acid, acrylamide and N-vinyl pyrrolidone; M2 is one or a mixture of styrene, methyl acrylate, ethyl acrylate, butyl acrylate, isopropyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, isopropyl methacrylate, diacetone acrylamide, acrylonitrile and glycidyl methacrylate; and x is 5-20 and y is 0-50. The invention has simple synthetic route and can effectively control the size of microsphere particles, the density of surface particles and the like. The obtained solid-state powdery microsphere has the self-emulsifying characteristic.

Description

technical field [0001] The invention relates to a macromolecule surfactant, a core-shell amphiphilic polymer microsphere and a preparation method thereof, and the core-shell amphiphilic polymer microsphere emulsion obtained by the invention can be used in the fields of coatings and adhesives , It is also used in water-based ink, water-based varnish, inkjet printing ink, heat-sensitive film, printing plate and other technical fields. Background technique [0002] A core-shell polymer is a polymer particle with a double-layer or multi-layer structure, and the core and shell layers have different components. Since Hughes et al. first reported polyacrylic acid / polymethyl methacrylate core-shell polymer in the 1960s [Huges J, Brown G L.J.Appl.Polym.Sci, 1961, 5 (17), 580.], the Both basic and applied research have made great progress. In the 1980s, Okubo et al. proposed a new concept of "particle design", that is, compounding from the particle level rather than macroscopic mech...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F2/24C08F287/00C09D151/00C09J151/00C09D11/10C09D11/03
Inventor 蒲嘉陵李仲晓樊武琨
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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