Assembling and disassembling method of functional polymer on surface of nano mesoporous carbon dioxide

A nano-mesoporous and silica technology, applied in the field of nano-materials, can solve cumbersome problems and achieve the effect of easy release

Active Publication Date: 2015-01-28
XIAMEN UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the current methods for surface modification of mesoporous silica are too cumbersome, and a method that can convenie

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
  • Assembling and disassembling method of functional polymer on surface of nano mesoporous carbon dioxide
  • Assembling and disassembling method of functional polymer on surface of nano mesoporous carbon dioxide
  • Assembling and disassembling method of functional polymer on surface of nano mesoporous carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] Preparation of PEGMA-co-PMAAPHBA:

[0034] (1) Dissolve 0.176 g of N-(4aminophenyl)-methacrylamide, 0.475 g of polyethylene glycol methacrylate and 10 mg of initiator in 1.5 mL of THF, and place the solution in a reaction vessel for freezing After degassing and filling with argon, it was sealed and reacted at 65-80 °C for 24 hours, and the reaction was stopped by freezing in liquid nitrogen for 2 minutes after polymerization;

[0035] (2) The solution after the reaction was precipitated twice with 100 mL of n-hexane and dried.

[0036] (3) Dissolve 0.4 g of the polymer obtained in step (2) in 5 mL of dichloromethane to prepare solution A, and dissolve 0.15 g of 3,4-dihydroxybenzaldehyde in 1 mL of methanol solution to prepare solution B;

[0037] (4) A and B two solutions N 2 After bubbling for 15 min, B solution was injected into A solution to react for 12 h. After the reaction, it was washed with dichloromethane, suction filtered and dried to obt...

Example Embodiment

[0046] Example 2

[0047] 1. The polymer PEGMA-co-PMAAPHBA and nano-mesoporous silica prepared with reference to Example 1.

[0048] 2. Prepare 5g / L nano-mesoporous silica aqueous solution, 5g / L catechol functionalized polymer aqueous solution, 20g / L FeCl 3 Aqueous solution; 1.5 mL of catechol-functionalized polymer aqueous solution and 0.5 mL of metal ion aqueous solution were added to 2 mL of nano-mesoporous silica aqueous solution in turn. After shaking, the catechol-functionalized polymer was coordinated with metal ions, and The surface of the nano-mesoporous silica is assembled to obtain an aqueous solution of nano-mesoporous silica coated with a catechol functionalized polymer.

[0049] 3. Centrifuge the aqueous solution of nano-mesoporous silica coated with catechol-functionalized polymer in 2, and redisperse the obtained nano-mesoporous silica coated with catechol-functionalized polymer in In water, adding acetic acid solution to 1 mL of aqueous solution of nano-meso...

Example Embodiment

[0050] Example 3

[0051] 1. The polymer PEGMA-co-PMAAPHBA and mesoporous silica prepared with reference to Example 1.

[0052] 2. Prepare 5g / L nano-mesoporous silica aqueous solution, 5g / L catechol functionalized polymer aqueous solution, 20g / L FeCl 3 Aqueous solution; 1.5 mL of catechol-functionalized polymer aqueous solution and 0.4 mL of metal ion aqueous solution were added to 1.5 mL of nano-mesoporous silica aqueous solution in turn. After shaking, the catechol-functionalized polymer was coordinated with the metal ions. The assembly is realized on the surface of nano-mesoporous silica to obtain an aqueous solution of nano-mesoporous silica coated with a catechol functionalized polymer.

[0053] 3. Centrifuge the aqueous solution of nano-mesoporous silica coated with catechol-functionalized polymer in 2, and redisperse the obtained nano-mesoporous silica coated with catechol-functionalized polymer in In water, adding acetic acid solution to 1 mL of nano-mesoporous silic...

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

No PUM Login to view more

Abstract

The invention relates to an assembling and disassembling method of a functional polymer on the surface of nano mesoporous carbon dioxide and belongs to the field of nano materials. The method comprises the following steps: by using water as a solvent, preparing a nano mesoporous carbon dioxide aqueous solution, a catechol functional polymer aqueous solution and a metal ion aqueous solution; sequentially adding the catechol functional polymer aqueous solution and the metal ion aqueous solution into the nano mesoporous carbon dioxide aqueous solution, and after oscillation, coordinating the catechol functional polymer and the metal ions, and assembling on the surface of nano mesoporous carbon dioxide to obtain the nano mesoporous carbon dioxide aqueous solution wrapped by the catechol functional polymer; carrying out centrifugal separation, re-dispersing the nano mesoporous carbon dioxide wrapped by the catechol functional polymer in water; and adding an acid solution into the nano mesoporous carbon dioxide aqueous solution wrapped by the catechol functional polymer to adjust the pH to 5-6 so as to disassemble the catechol functional polymer on the surface of the nano mesoporous carbon dioxide.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and in particular relates to the assembly and disassembly behavior of a catechol functionalized polymer on the surface of silicon dioxide nanometer microspheres. Background technique [0002] Since Kresge et al first reported an ordered mesoporous silica material named MCM-41 in Nature in 1992, the research on mesoporous silica has rapidly become an international hotspot. The emergence of ordered mesoporous silica is a leap in the history of molecular sieves and porous materials. [0003] Mesoporous nano-silica can form organic-inorganic hybrid materials with organic or polymer materials, so that it can exert its own small size effect, surface and interface effect, and quantum size effect. At the same time, different modification methods can endow materials with various other properties. Therefore, it has a wide range of applications in catalysis, drug delivery and controlled release, gene tr...

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
IPC IPC(8): C01B33/12A61K47/04A61K47/34
Inventor 戴李宗毛杰袁丛辉罗伟昂谢泓辉王爽陈婷邵志恒许一婷曾碧榕
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap