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Method for preparing snowman-like organic/inorganic hybrid particles by adopting one-step miniemulsion polymerization method

A technology of miniemulsion polymerization and hybrid particles, which is applied in the field of materials, can solve the problems of low proportion of asymmetric particles and the inability to control organic-inorganic hybrid asymmetric particles, etc., and achieves easy large-scale production, high output, and simple process Effect

Active Publication Date: 2016-04-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Perro, A.; Reculusa, S.; Bourgeat-Lami, E.; Duguet, E.; Ravaine, S. COLLOID SAND SURFACE SA-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 2006, 284, (SI), 78-83; Nguyen, D.; Ravaine, S. ; Bourgeat-Lami, E.; Duguet, E. Journal of Materials Chemistry 2010, 20, (42), 9392; Bladé, T.; Malosse, L.; Duguet, E.; Doussineau, T.; Antoine, R.; Désert, A.; Dugas, P.; Ravaine, S.; Duguet , E.; Bourgeat-Lami, E.; Lansalot, M. Polymer2015, 70, 118-126.) However, the main problems of this method are: the proportion of asymmetric particles in the product is low, and there are a large number of polymer particles The case where the ball is connected to an inorganic particle
Unable to control organic-inorganic hybrid asymmetric particles mainly forming 1-to-1 structure

Method used

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  • Method for preparing snowman-like organic/inorganic hybrid particles by adopting one-step miniemulsion polymerization method
  • Method for preparing snowman-like organic/inorganic hybrid particles by adopting one-step miniemulsion polymerization method
  • Method for preparing snowman-like organic/inorganic hybrid particles by adopting one-step miniemulsion polymerization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1PS / SiO 2 Preparation of Snowman Shaped Particles

[0028] SiO with a diameter of 80nm 2 Modified with dimethylacryloyloxytrimethylsilane, the graft density is 0.03μmol / m 2 , 2.0 g of coupling agent-modified SiO 2 Disperse in 100ml of deionized water containing 0.03g sodium tetradecylbenzene sulfonate and sonicate for 30min, and also ultrasonicate 100ml of deionized water containing 2.0gSt, 0.08g hexadecane and 0.03g sodium tetradecylbenzenesulfonate for 30min , and then mix the two. Stir at a low speed for 40 min, and the stirring rate is 500 rpm. Then high-speed shear 5.0min, high-speed shear rate at 10000rpm. 0.03 g of potassium peroxide was added to initiate polymerization to obtain snowman-shaped organic and inorganic particles.

[0029] figure 1 and figure 2 For the PS / SiO prepared in this example 2Scanning electron micrograph of snowman-shaped particles, in which the microspheres with a diameter of about 80nm are silica particles, and the mic...

Embodiment 2

[0030] Embodiment 2PS / SiO 2 Preparation of Snowman Shaped Particles

[0031] SiO with a diameter of 80nm 2 Modified with vinyltriethylsilane, the graft density is 0.01μmol / m 2 , 2.0 g of coupling agent-modified SiO 2 Disperse in 100ml of deionized water containing 0.03g sodium tetradecylbenzene sulfonate and sonicate for 45min. Similarly, ultrasonicate 100ml of deionized water containing 3.0gSt, 0.08g hexadecane and 0.03g sodium dodecylsulfate for 45min, then Mix the two together. Stir at low speed for 40min, and the stirring rate is 1000rpm. Then high-speed shearing 6.0min, high-speed shearing rate at 10000rpm. 0.03 g of potassium peroxide was added to initiate polymerization to obtain snowman-shaped organic and inorganic particles.

Embodiment 3

[0032] Embodiment 3PMMA / SiO 2 Preparation of Snowman Shaped Particles

[0033] SiO with a diameter of 200nm 2 Modified with vinyltrimethoxysilane, the graft density is 0.06μmol / m 2 , 4.0 g of coupling agent-modified SiO 2 Disperse in 100ml of deionized water containing 0.05g sodium tetradecylbenzene sulfonate and sonicate for 20min, similarly ultrasonicate 100ml of deionized water containing 2.0gMMA, 0.05g propylene glycol and 0.05g sodium tetradecylbenzenesulfonate for 20min, then Mix the two together. Stir at low speed for 20min, and the stirring rate is 600rpm. Then shear at a high speed for 3.0 min, and the high-speed shear rate is at 8000 rpm. 0.02 g of azobisisobutyronitrile was added to initiate polymerization to obtain snowman-shaped organic and inorganic particles.

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Abstract

The invention relates to a method for preparing snowman-like organic / inorganic hybrid particles by adopting one-step miniemulsion polymerization method. The method comprises the following steps: coupling agent modified inorganic particles are dispersed in emulsifier-containing deionized water for ultrasonic processing, and a solution I is obtained; deionized water containing a monomer, a co-emulsifier and an emulsifier is subjected to ultrasonic processing, and a solution II is obtained; the solution I and the solution II are mixed, stirred at a low speed and sheared at a high speed, an initiator is added to initiate polymerization, and the snowman-like organic / inorganic hybrid particles are obtained. Monomer droplets are dispersed into stable microspheres under an ultrasonic effect by means of the emulsifier and the co-emulsifier, the monomer microspheres collide with the inorganic particles under the action of high-speed shearing, and the size and number of the monomer microspheres and the collision and binding degrees of the monomer microspheres with the inorganic particles can be controlled through proper matching of the emulsifier and the co-emulsifier, proper ultrasonic power and ultrasonic time as well as proper high-speed shearing speed and time. The method has the advantages of simple technological process, high yield of snowman-like particles and easiness in scale production.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a method for preparing snowman-shaped organic-inorganic hybrid particles by one-step miniemulsion polymerization. Background technique [0002] Due to the specific structure and chemical properties of asymmetric nanoparticles, they have great application prospects in the fields of emulsion, catalysis, sensing, oil displacement, thermal and electrical conductivity, and polymer composite materials. Asymmetric particles containing inorganic components can combine the characteristics of inorganic components and organic components, which can further broaden the application field of asymmetric particles. [0003] At present, the main difficulties restricting the wide application of asymmetric particles are: (1) the yield of the product is low; (2) the preparation process is complicated; (3) the structure and chemical properties are not easy to control. Using the heteroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F212/08C08F220/14C08F220/18C08F220/56
CPCC08F292/00C08F220/1804
Inventor 尤伟俞炜周持兴
Owner SHANGHAI JIAO TONG UNIV
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