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Organic/inorganic composite microspheres with core-shell structures and preparation method and application thereof

A technology of inorganic composite microspheres and core-shell structure, which is applied in the preparation of microspheres, the treatment of dyed organosilicon compounds, and the treatment of dyed low-molecular-weight organic compounds, etc. question

Inactive Publication Date: 2014-03-12
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the phase inversion preparation method is mostly used in the preparation of composite catalysts, but the phase inversion method needs to accurately control the addition amount and addition speed of the phase inversion method when preparing the core-shell structure, otherwise it will be difficult to form a perfect core-shell structure, resulting in coating Polymers can not play a role in isolation regulation
Under the premise of ensuring the characteristics of the core catalyst, how to more effectively coat the polymer uniformly is a difficult problem to be solved at present, but there is no literature report on the effect of silane coupling agent on polymer coating

Method used

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  • Organic/inorganic composite microspheres with core-shell structures and preparation method and application thereof
  • Organic/inorganic composite microspheres with core-shell structures and preparation method and application thereof
  • Organic/inorganic composite microspheres with core-shell structures and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0059] The organic / inorganic composite microspheres with core-shell structure with silica gel as the inner core were prepared, and the amount of polymer added was changed.

Embodiment 1

[0061] Take 2 g of the dehydrated membrane material, add 50 ml of toluene at ambient temperature, stir until completely dissolved, and prepare a polystyrene-acrylic acid (PSA) solution with a concentration of 0.04 g / ml, which is stored under a sealed nitrogen atmosphere for use.

[0062] Set the temperature of the water bath at 60°C, put 2g of silica gel into a three-necked flask, add 10ml of PSA toluene solution, and 0.1ml of n-dodecyltrimethoxysilane (N3112), and stir for 1 hour. Then, 100 ml of non-solvent (n-hexane) was slowly added dropwise (at a speed of 1 ml / min) into the three-necked flask using a dropping funnel, and the polymer was slowly coated on the surface of the silica gel. Until the n-hexane was completely titrated, the stirring was stopped, then washed with n-hexane for 3 times, vacuum-dried to obtain organic shell / inorganic core composite particles, and 2.35 g of composite particles were obtained by weighing. The SEM images of the prepared composite particles...

Embodiment 2

[0064] Composite particles were prepared using the same method as in Example 1, except that the amount of the PSA toluene solution was changed to 5 ml. The properties of the composite particles tested according to the above test methods are listed in Table 1.

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Abstract

The invention relates to organic / inorganic composite microspheres with core-shell structures and a preparation method and application thereof. The preparation method of the organic / inorganic composite microspheres comprises the steps of firstly, carrying out surface activation treatment on inorganic particles by using an organic coupling agent, so as to prepare lipophilic active inorganic particles with molecular bridges; adding the active inorganic particles into a homogeneous good solution where an organic polymer is dissolved, and thoroughly stirring and mixing, so as to form a monodisperse emulsion; slowly adding a non-solvent into the emulsion, so as to enable the organic polymer in the solution to be uniformly attached to the surfaces of the inorganic particles through the molecular bridges, repeatedly washing with the non-solvent, and drying, thereby preparing free-flowing organic / inorganic composite microspheres with the core-shell structures. Compared with the prior art, the preparation method disclosed by the invention has the characteristics of rapidness, simplicity, convenience, flexibility, controllability and the like, and can be applied to the preparation of any composite microsphere with an inorganic core-organic shell structure.

Description

technical field [0001] The invention belongs to the field of synthesis and preparation of organic-inorganic hybrid materials, and in particular relates to an organic / inorganic composite microsphere with a core-shell structure and a preparation method and application thereof. Background technique [0002] With the development of science and technology, organic / inorganic hybridization of functional materials is the development trend of modern materials. New functional materials can be prepared by hybridizing two or more organic / inorganic chemical components to complement and optimize their properties. Nano-organic / inorganic hybrid materials combine the excellent properties of organic polymers and inorganic materials, have diverse structures and unique physical and chemical properties, and open up a new way for people to explore new materials. [0003] In recent years, the preparation and application of inorganic / organic core-shell particles have attracted the interest of many...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/02C08K9/10C09C3/10C09C3/12C09C3/08C09C1/28C09C1/36B01J13/02
Inventor 张乐天乔新峰奚媛媛肖明威叶晓峰
Owner SHANGHAI RES INST OF CHEM IND
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