Crosslinking poly(organophosphazenes) microsphere and preparation method thereof

A technology for cross-linking polyphosphazene and microspheres, which is applied in chemical instruments and methods, catalyst carriers, physical/chemical process catalysts, etc. It can solve the problems that polyphosphazene microspheres have not been reported, achieve good thermal stability and simple process Effect

Inactive Publication Date: 2007-02-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, a large number of linear, grafted and cross-linked polyphosphazene materials ha

Method used

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  • Crosslinking poly(organophosphazenes) microsphere and preparation method thereof
  • Crosslinking poly(organophosphazenes) microsphere and preparation method thereof
  • Crosslinking poly(organophosphazenes) microsphere and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0020] Example 1:

[0021] Add 0.1 g (0.29 mmol) of hexachlorocyclotriphosphazene, 0.22 g (0.86 mmol) of 4,4'-dihydroxydiphenyl sulfone and 0.17 g (1.73 mmol) of triethylamine into a 150 ml flask, and then Add 90 ml of acetone and stir to dissolve. Under 25℃, magnetically stir the reaction for 2 hours. After the reaction, the solid is separated by centrifugation. The crude product is washed three times with acetone, then three times with deionized water, and finally in a vacuum oven. After drying for 24 hours, 0.52 g of crosslinked polyphosphazene microspheres were obtained, and the yield based on hexachlorocyclotriphosphazene was 47%.

[0022] figure 1 Is the transmission electron micrograph of the crosslinked polyphosphazene microspheres, figure 2 Is a scanning electron micrograph of cross-linked polyphosphazene microspheres, image 3 It is a field emission scanning electron microscope photo of cross-linked polyphosphazene microspheres. It can be seen from the photo that the ...

Example Embodiment

[0027] Example 2:

[0028] Add 1 g (2.9 mmol) of hexachlorocyclotriphosphazene, 2.2 g (8.6 mmol) of 4,4'-dihydroxydiphenylsulfone and 34 g (346 mmol) of triethylamine to a 500 ml flask, and then Add 250ml of acetone, stir to dissolve, at 25℃, magnetically stir the reaction for 1 hour, after the reaction, the solid is separated by centrifugation, the crude product is washed with acetone three times, then washed with deionized water three times, and finally in a vacuum oven After drying for 24 hours, 1.17 g of cross-linked polyphosphazene microspheres were obtained, and the yield based on hexachlorocyclotriphosphazene was 64%. The electron microscope photos show that the diameter of the microspheres is 0.4-4.5 microns, and the surface of the microspheres is flat and solid. Spectroscopic analysis shows that the structure is a cross-linked condensation structure of hexachlorocyclotriphosphazene and 4,4'-dihydroxydiphenylsulfone .

Example Embodiment

[0029] Example 3:

[0030] The equipment and preparation process described in Example 1 were used, except that the reaction temperature was carried out at the reflux temperature of acetone, and the yield was 55% based on hexachlorocyclotriphosphazene. The analysis of the experimental results shows that the diameter of the microspheres is 0.5-4.5 microns, and the surface of the microspheres is flat and solid, and the structure is a cross-linked condensation structure of hexachlorocyclotriphosphazene and 4,4'-dihydroxydiphenylsulfone.

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Abstract

the invention discloses a crosslinking polyphosphine-nitrile microball and preparing method, which is characterized by the following: the diameter is 0.4-5 um ; the chemical structural formula is displayed on the right; the microball surface is flat solid structure, which adopts hexachloride cycotrinitrilephosphine and 4, 4'-dihydroxy diphenyl sulfone to crosslink and condense under the action of trimethylamine.

Description

Technical field: [0001] The invention relates to a polymer microsphere and a preparation method thereof, in particular to a cross-linked polyphosphazene microsphere and a preparation method thereof. Background technique: [0002] Polymer microsphere materials are widely used, such as plastic additives, coatings, adhesives, building materials, etc. (Document 1. J. Forcada et al., Curr. Org. Chem. 9, 1067, (2005)). In recent years, polymer microsphere materials with diameters ranging from submicron to several microns have shown applications in high-end technical fields, such as membrane materials, drug delivery controlled release systems, microreactors, microseparators, spacer materials for liquid crystal displays , chromatographic column packing material etc. (document 2.H.Fudouz et al., Adv.Mater.15,892, (2003); 3.C.F.Wilson et al., Anal.Chem.74,5099, (2002); 4. T. Kim et al., Biomaterials 27, 152, (2006)). Among them, the highly cross-linked polymer microsphere material h...

Claims

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Application Information

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IPC IPC(8): C08G79/02A61K47/34B01J32/00C09K21/14C08G79/025
Inventor 朱路唐小真朱䶮
Owner SHANGHAI JIAO TONG UNIV
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