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A gel and method of an amphiphilic copolymer network with microscopic pores

An amphiphilic and gel technology, applied in the gel field of amphiphilic copolymer network, can solve problems such as poor adsorption capacity, achieve the effect of improving adsorption performance, promoting interaction, ensuring hydrophobicity and mechanical properties

Inactive Publication Date: 2019-07-12
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a gel and method with an amphiphilic copolymerization network with micro-holes. The gel solves the problems of traditional gels with no network cross-linking structure and poor adsorption capacity, and can form a three-dimensional high Branched structure, also has hydrophobic segments, has better adsorption performance

Method used

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  • A gel and method of an amphiphilic copolymer network with microscopic pores
  • A gel and method of an amphiphilic copolymer network with microscopic pores
  • A gel and method of an amphiphilic copolymer network with microscopic pores

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0058] Experimental Example 1 Synthesis of Polyoxyethyl Glyceryl Ether-b-Polycaprolactone Amphiphilic Block Precursor (A-PEG-b-PCL-OH)

[0059] A-PEG-OH was azeotropically removed with toluene before use. A certain amount of A-PEG-OH and 6-caprolactone CL were added to the reaction flask. After deoxygenation with argon for 40min, Sn(Oct) was added quickly. 2 , after 20 min of deoxygenation with argon, the reaction system was sealed and stirred at 110° C. for 16 h. After the reaction, the reaction system was precipitated in glacial ether, filtered, and the obtained product was vacuum-dried at 40°C to constant weight.

[0060] As shown in Table 1, it is the charging ratio table of each raw material in Experimental Example 1. By adjusting the charging ratio of A-PEG-OH / CL, three kinds of A-PEG-b-PCL-OH precursors with different molecular weights were obtained, and according to The theoretical degree of polymerization of the polymerized units in each arm, respectively named A-PEG...

experiment example 2 3

[0067] Experimental Example 2 Synthesis of Tribromo Amphiphilic A Monomer (A-PEG-b-PCL-Br)

[0068] A certain amount of A-PEG-b-PCL-OH, BPA (α-bromopropionic acid), p-TSA (p-toluenesulfonic acid) and 200 mL of toluene were added to the Dean-Stark device, heated to 120°C, and refluxed. 16h. After the reaction, toluene was evaporated, the crude product was dissolved in dichloromethane, and 2% Na was used in turn. 2 CO 3 3 washes, 2 washes with 5% NaCl solution, and 2 washes with deionized water. Separation with anhydrous MgSO 4 The organic layer was dried, the solvent was removed under reduced pressure, the crude product was precipitated in ice-n-hexane, filtered, and the obtained product was dried under vacuum at 40°C to constant weight.

[0069] The A monomers obtained by the esterification modification corresponding to the precursors 1-3 prepared in Experimental Example 1 are named A-PEG respectively 7 -b-PCL 3 -Br(A monomer 1), A-PEG 7 -b-PCL 5 -Br(A monomer 2) and A...

experiment example 3

[0073] Experimental example 3 Synthesis method of B monomer with imidazole in end group

[0074] It is prepared by Michael addition reaction of 1,3,5-triacryloylhexahydro-1,3,5-triazine (TT) and imidazole (Im), and the specific technical scheme is as follows:

[0075] TT (5 g, 20 mmol) and Im (10 g, 106 mmol) were added to 30 mL of anhydrous methanol and refluxed for 24 h. After the reaction, the reaction system was precipitated in a mixed solvent of ethyl acetate / tetrahydrofuran (1:1 by volume). Then wash twice through dissolution-precipitation (methanol-ethyl acetate / tetrahydrofuran), filter, and vacuum-dry the obtained precipitate to constant weight at room temperature to obtain B monomer (TT Im), as Figure 4 As shown, it is the H nuclear magnetic spectrum of the B monomer with imidazole at the end group prepared in Experimental Example 3 of the present invention.

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Abstract

The invention discloses gel of an amphiphilic copolymerization network with micro pores and a method. The gel has a polymer repeating structure unit as shown in a formula (1), wherein R is an N heterocyclic ring; R comprises one optional structure of two structures shown in the description, wherein X comprises Br<->, Cl<-> or PF6<->, n ranges from 6 to 30, and m ranges from 3 to 30; the gel fraction of the gel is greater than 70 percent. According to the gel disclosed by the invention, a three-dimensional highly branched structure can be formed at the inner part of the gel; meanwhile, a hydrophobic segment is also obtained, and better adsorption performance is obtained. The formula (I) is shown in the description.

Description

technical field [0001] The invention relates to the field of gel materials, in particular to an amphiphilic copolymerized network gel with micron holes and a method thereof. Background technique [0002] Dyeing industrial effluents are among the most problematic, even at low concentrations, due to the toxicity and visibility of the dyes. Most organic dyes, especially synthetic dyes, have complex aromatic molecular structures, making them stable and difficult to biodegrade, which may be toxic or mutagenic and carcinogenic to biodiversity. Therefore, the effective removal of dyes from water is of great significance for the protection of public health and the ecological environment. [0003] Among the numerous methods developed to treat dye-containing wastewater, adsorption is generally considered to be the most widely used dye removal technique due to its economic feasibility, high efficiency, and operational simplicity. Therefore, how to design and synthesize new adsorbents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C08G63/664C08G83/00B01J20/26B01J20/28C02F1/28C02F101/22
CPCB01J20/262B01J20/264B01J20/28047C02F1/285C02F2101/22C08G63/664C08G73/0616C08G73/0677C08G83/005
Inventor 宋文琦高博杨卓澜刘玉申璐高媛杨镔泽
Owner XIJING UNIV
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