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Maleic anhydride-styrene copolymer microsphere as well as preparation method and application thereof

A technology of styrene copolymer and maleic anhydride, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as complex preparation process and environmental pollution

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem that the preparation process of maleic anhydride copolymer is complex and pollutes the environment in the prior art, and at the same time overcome the problem that the material has a special smell due to the use of ester solvents, and provide a maleic anhydride-benzene Ethylene copolymer microspheres and their preparation method and application. The surface of the maleic anhydride-copolymer microspheres is clean and pollution-free, and the particles of the microspheres are uniform. No polluting additives such as emulsifiers are used in the preparation process, which significantly reduces the production process. environmental pollution

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  • Maleic anhydride-styrene copolymer microsphere as well as preparation method and application thereof
  • Maleic anhydride-styrene copolymer microsphere as well as preparation method and application thereof
  • Maleic anhydride-styrene copolymer microsphere as well as preparation method and application thereof

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preparation example Construction

[0025] The first aspect of the present invention provides a kind of preparation method of maleic anhydride-styrene copolymer microsphere, described method comprises the following steps:

[0026] (1) In an inert atmosphere, the polymerization monomer and the initiator are dissolved in the reaction medium to form a homogeneous solution;

[0027] (2) After the homogeneous solution is polymerized to obtain a copolymer emulsion suspension, centrifugal separation obtains the maleic anhydride-styrene copolymer microspheres;

[0028] Wherein, the polymerized monomers are maleic anhydride and styrene; based on the total weight of the polymerized monomers, the amount of maleic anhydride is 50-90wt%, and the amount of styrene is 10-50wt%;

[0029] Described reaction medium is the mixture of the compound shown in formula (1) and alkane;

[0030]

[0031] Among them, R 1 and R 2 Each independently represents an alkyl group having 1 to 6 carbon atoms.

[0032] In the present inventio...

Embodiment 1

[0069] Add 4.9g of maleic anhydride, 0.89g of azobisisobutyronitrile, 5.2g of styrene, 40ml of acetone and 60ml of hexane into a 500mL three-necked flask. React in a water bath for 5 hours. After the reaction is completed, the obtained polymer emulsion suspension is centrifuged at a speed of 2000 rad / min for 20 minutes to obtain 9.2 g of polymer microspheres A1, corresponding to a polymer yield of 91%. The size of polymer microsphere A1 is 1100 nm.

[0070] The polymer microsphere A1 was carried out 1 According to H NMR measurement, based on the total molar weight of each structural unit in the polymer, the molar content of structural unit A derived from maleic anhydride is 49%, and the molar content of structural unit B derived from styrene is 51%.

[0071] figure 1 is the SEM image of polymer microsphere A1, from figure 1 It can be seen that the maleic anhydride-styrene copolymer particles prepared in Example 1 are spherical polymer particles.

[0072] figure 2 is the ...

Embodiment 2

[0074] Add 2.5g of maleic anhydride, 0.89g of azobisisobutyronitrile, 2.6g of styrene, 40ml of acetone and 60ml of hexane into a 500mL three-necked flask. React in a water bath for 12 hours. After the reaction is completed, the obtained polymer emulsion suspension is centrifuged at a speed of 2000 rad / min for 20 minutes to obtain 4.6 g of polymer microspheres A2, corresponding to a polymer yield of 88%. The size of the polymer microsphere A2 is 500 nm.

[0075] The polymer microsphere A2 was carried out 1 According to H NMR measurement, based on the total molar weight of each structural unit in the polymer, the molar content of structural unit A derived from maleic anhydride is 48%, and the molar content of structural unit B derived from styrene is 52%.

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Abstract

The invention relates to the field of high-molecular polymers, and discloses maleic anhydride-styrene copolymer microspheres as well as a preparation method and application thereof. The preparation method of the copolymer microspheres comprises the following steps: (1) dissolving a polymeric monomer and an initiator in a reaction medium in an inert atmosphere to form a homogeneous solution; and (2) carrying out polymerization reaction on the homogeneous solution to obtain a copolymer emulsion suspension, and carrying out solid-liquid separation to obtain the copolymer microspheres, the polymeric monomers are maleic anhydride and styrene; based on the total weight of the polymeric monomers, the use amount of maleic anhydride is 50-90 wt%, and the use amount of styrene is 10-50 wt%; the reaction medium is a mixture of a compound shown in a formula (1) and alkane; the surface of the copolymer microsphere is clean and pollution-free, the microsphere particles are uniform, an emulsifier and other polluting auxiliaries are not used in the preparation process, and the environmental pollution caused in the preparation process is remarkably reduced. The copolymer microsphere prepared by the method can be used as a photoluminescent material.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a method for preparing maleic anhydride-styrene copolymer microspheres, maleic anhydride-styrene copolymer microspheres prepared by the method and applications thereof. Background technique [0002] Traditional organic photoluminescent materials are mainly molecules with rigid planes and π-electron conjugated systems and rare earth complexes (Journal of Natural Sciences, Harbin Normal University, 2006, 22(3): 70-70). The synthesis and preparation of these luminescent materials require relatively complicated process routes and relatively high preparation costs, which are not conducive to the promotion and application of photoluminescent materials. Finding a simple, environmentally friendly and economical method for preparing photoluminescent polymer materials is of great significance to the promotion and application of photoluminescent materials. Maleic anhydride polymers have photolumine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/06C09K11/06
CPCC08F212/08C08F222/06C09K11/06C09K2211/1425
Inventor 刘振杰张洁宋文波张晓萌陈明
Owner CHINA PETROLEUM & CHEM CORP
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