Unlock instant, AI-driven research and patent intelligence for your innovation.

Nano macromolecule microball of epoxy function type cross-linked nucleocapsid structure and preparation process thereof

A nano-polymer, core-shell structure technology, applied in the field of cross-linked core-shell nano-polymer microspheres and its preparation, can solve the problems of poor solvent resistance and oil absorption, and achieve improved interface interaction, easy storage and The effect of simple operation and preparation process

Inactive Publication Date: 2006-03-22
TSINGHUA UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of epoxy functional cross-linked core-shell nano-polymer microsphere and its preparation method. Both the core and the shell of the microsphere form a cross-linked structure, and the epoxy functional group that can react with a variety of polymer matrices is introduced on the surface of the microsphere, which not only solves the problem of preparing nanoscale core-shell latex particles, but also solves the problem in the past. The problem of poor solvent resistance and oil absorption of core-shell latex particles, and more importantly, the introduction of epoxy functional groups on the surface has improved the interface interaction between the microspheres and the matrix when filling the polymer matrix. Finally, various good properties can be exhibited in practical applications

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano macromolecule microball of epoxy function type cross-linked nucleocapsid structure and preparation process thereof
  • Nano macromolecule microball of epoxy function type cross-linked nucleocapsid structure and preparation process thereof
  • Nano macromolecule microball of epoxy function type cross-linked nucleocapsid structure and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: 70 parts of butyl acrylate (BA) as the core layer monoolefin monomer and 7 parts of trimethylolpropane trimethacrylate (TM) as the core layer polyolefin monomer were mixed uniformly and set aside. Add 360 parts of deionized water, 4 parts of sodium dodecylsulfonate (SDS) and 0.5 part of nonylphenol polyoxyethylene ether into a four-necked bottle equipped with mechanical stirring, reflux condenser and thermometer, and raise the temperature to 50°C , add 30% of the previously prepared mixture to form a uniform emulsion. Then add 80% of the initiator aqueous solution made up of 0.5 parts of water-soluble initiator ammonium persulfate and 72 parts of deionized water, and raise the temperature to 82° C. for 1.5 hours. Then, dropwise add the remaining previously prepared mixture to the system, and react for 1.5 hours after the dropwise addition is completed. Then add the remaining initiator solution, and dropwise add 30 parts of methyl methacrylate (MMA) (as shell...

Embodiment 2

[0054] Example 2: 30 parts of styrene (St) as the core layer monoolefin monomer and 3 parts of divinylbenzene (DVB) as the core layer polyolefin monomer were mixed uniformly and set aside. Add 360 parts of deionized water, 6.5 parts of sodium dodecylsulfonate (SDS) and 0.5 part of nonylphenol polyoxyethylene ether into a four-necked bottle equipped with mechanical stirring, reflux condenser and thermometer, and raise the temperature to 50°C , add 70% of the previously prepared mixture to form a uniform emulsion. Then add 20% of the initiator aqueous solution made up of 0.5 parts of water-soluble initiator ammonium persulfate and 72 parts of deionized water, and raise the temperature to 82° C. for 40 minutes. Then the rest of the previously prepared mixture was added to the system, and the reaction was continued for 1 hour. Then add all the remaining initiator solution, and add 70 parts of butyl acrylate (BA) (as the shell monoolefin monomer) and 7 parts of divinylbenzene (DVB...

Embodiment 3

[0055] Embodiment 3: the core layer monoolefin monomer in embodiment 1 is changed into the mixture of butyl acrylate and methyl acrylate of equal mass, and the shell layer monoolefin monomer is changed into the mixture of St and MMA, wherein MMA and St The mass ratio is 2:1, and the consumption of glycidyl methacrylate is changed to 0.1 part, and the rest of the formula is the same as Example 1. The yield of the obtained product is 94.1%, the gel rate is 90.6%, and the particle size distribution is 40-50nm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
gel rateaaaaaaaaaa
Login to View More

Abstract

The invention is an epoxy functional cross-linked core-shell nano high molecular microsphere and its preparing method, using multiple alkene monomers and alkene monomers with epoxy functional groups as raw materials, on the condition of emulsifier and initiator, and preparing it by emulsion or suspension polymerization using water as medium; the product has a cross-linked structure inside both the core and shell, the core and shell are linked through chemical bonds, the epoxy functional groups are grafted on the microsphere surface, and the particle size is less than 100 nm. By changing the composition of the core and shell, it obtains an epoxy functional nano high molecular microsphere with mutiple different physico-chemical properties, and has very high freedom in selecting structure design. It solves the problem that the precious core-shell high molecular microshperes have no nano size and that the precious cores and shells are mostly linear polymers, and simultaneously by introducing epoxy functional groups on the surface, and improves the interface compatibility as this microsphere is filled in high molecular basal body, thus broadening its application field.

Description

technical field [0001] The invention relates to a nano-polymer microsphere with a cross-linked core-shell structure and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] The preparation of nano-polymer microspheres with core-shell structure has attracted the attention of many researchers in recent years. In the preparation, according to the application needs of different fields, nano-polymer microspheres with different structures and different physical and chemical properties can be synthesized by changing the composition and ratio of the core and shell of the microspheres, which has a high degree of freedom in design, so in There are broad prospects in the research and application of new nanomaterials. [0003] The present inventor successfully synthesized cross-linked core-shell nano-polymer microspheres in the Chinese patent (application number: 200410000745.4) filed on January 16, 2004. This invention sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/32C08F2/16
Inventor 于建曾重郭朝霞
Owner TSINGHUA UNIV