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A kind of high antibacterial graft polymer and preparation method thereof

A graft polymer, antibacterial technology, applied in the field of functional polymer materials, can solve problems such as poor antibacterial performance, and achieve the effect of improving antibacterial performance

Inactive Publication Date: 2016-08-24
CHANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the problem of poor antibacterial performance of existing polymer metal complexes, provide a kind of high antibacterial graft polymer and its preparation method. Cadmium element, which greatly increases the antibacterial properties of polymer metal complexes

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  • A kind of high antibacterial graft polymer and preparation method thereof
  • A kind of high antibacterial graft polymer and preparation method thereof
  • A kind of high antibacterial graft polymer and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 Shown, a kind of preparation method of high antibacterial graft polymer comprises the steps:

[0031] (1) Preparation of cadmium acrylate monomer

[0032] Liquefy frozen acrylic acid at room temperature. After liquefaction, mix 13mL acrylic acid with the same amount of deionized water, stir magnetically, add 12g of cadmium hydroxide in batches, and finally precipitate with acetone at a speed of 4000r / min. After high-speed centrifugation, the lower layer of precipitate is taken out and dried at room temperature, and the obtained solid product is the required cadmium acrylate monomer, which is sealed and stored at low temperature.

[0033] (2) Preparation of polystyrene macroinitiator

[0034] Under a nitrogen atmosphere, add 0.4077g of 2'2-bipyridine and 0.1248g of cuprous bromide to the dry Kjeldahl flask in sequence, after patting for complexation, inject 127.7μl of ethyl α-bromoisobutyrate and 10mL of styrene was sealed and reacted in an oil bath a...

Embodiment 2

[0046] In this embodiment, the preparation of the polystyrene macromolecular initiator and the cadmium acrylate monomer is the same as in Embodiment 1.

[0047] The preparation method of the grafted polystyrene macromolecular initiator: at room temperature, weigh 4g of the polystyrene macromolecular initiator into a three-necked flask, add 30mL of carbon tetrachloride and wait for it to dissolve, and put it in a 70°C oil bath To mechanical stirring, reflux condensation. Add N-bromosuccinimide and azobisisobutyronitrile with a total amount of 0.684g and 0.104g respectively in 4 times, stop the reaction after 10h, remove the solid residue generated in the system by suction filtration, and then spin evaporate the filtrate After removing the solvent, add tetrahydrofuran to dissolve the remaining solid, wash the precipitate with methanol / water (v:v=1:1), filter with suction, dry the obtained solid product in a vacuum oven, and store it at low temperature in the dark.

[0048] Acco...

Embodiment 3

[0053] In this embodiment, the preparation of the polystyrene macromolecular initiator and the cadmium acrylate monomer is the same as in Embodiment 1.

[0054] The preparation method of the grafted polystyrene macromolecular initiator: at room temperature, weigh 4g of polystyrene macromolecular initiator into a three-necked flask, add 30mL of carbon tetrachloride and wait for it to dissolve, and put it in a 90°C oil bath To mechanical stirring, reflux condensation. Add N-bromosuccinimide and azobisisobutyronitrile with a total amount of 1.216g and 0.184g respectively in 4 times, stop the reaction for 8 hours, remove the solid residue generated in the system by suction filtration, and then spin evaporate the filtrate After removing the solvent, add tetrahydrofuran to dissolve the remaining solid, wash the precipitate with methanol / water (v:v=1:1), filter with suction, dry the obtained solid product in a vacuum oven, and store it at low temperature in the dark.

[0055] Accord...

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Abstract

The invention belongs to the field of functional polymer materials, in particular to a high antibacterial graft polymer, whose structural formula is as follows: in The preparation steps are as follows: in a nitrogen atmosphere, add 2'2-bipyridine and cuprous bromide sequentially to a dry Kirschner flask, after lightly patting for complexation, add grafted polystyrene macromolecular initiator and cadmium acrylate, and Inject butyl methacrylate and solvent, seal the Kjeldahl bottle and react in an oil bath atmosphere at 80°C for 12 hours, then stop the reaction in an ice-salt bath, precipitate the product with methanol and filter it with suction, dry the solid product, and store it in the dark. The obtained solid product is the high antibacterial graft polymer. The graft copolymer synthesized by the method of atom transfer radical polymerization in the present invention not only provides a feasible basis for the preparation method of the metal complex, but more importantly, introduces a trace amount of metal elements into the polymer Cadmium greatly improves the antibacterial performance of the polymer, and the antibacterial rate is above 50%.

Description

technical field [0001] The invention belongs to the field of functional macromolecular materials, and in particular relates to a high antibacterial graft polymer and a method for preparing a high antibacterial graft polymer by atom transfer radical polymerization (ATRP). Background technique [0002] A copolymer in which side chains of polymer segments with different chemical structures from the main chain are connected to some atoms of the main chain of the polymer, called graft copolymers. Graft copolymers, like block copolymers, can link different monomers to the same polymer backbone through polymerization reactions, but since the functional monomers of graft polymers are mainly located on the side chains, the theoretical contact probability with the material Larger than block polymers. Grafted polymers have some unique properties because of their side chains containing functional monomers, and have been widely used in various industries, such as drug delivery, molecula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F257/02C08F220/06C08F220/18
Inventor 张洪文杨亮炯姜彦俞强
Owner CHANGZHOU UNIV