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Aliphatic polycarbonate containing epoxy group and preparation method of aliphatic polycarbonate

A technology of polycarbonate and epoxy groups, applied in the field of biomedical new materials, to achieve the effect of wide adaptability, expanding research fields and application space

Active Publication Date: 2016-05-04
CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, among the functionalized aliphatic polycarbonates that have a

Method used

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  • Aliphatic polycarbonate containing epoxy group and preparation method of aliphatic polycarbonate
  • Aliphatic polycarbonate containing epoxy group and preparation method of aliphatic polycarbonate
  • Aliphatic polycarbonate containing epoxy group and preparation method of aliphatic polycarbonate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] With the polycarbonate shown in the formula (II) of number average molecular weight Mn=2241 (PDI=1.13) as substrate, in stirring bar and N 2 Add polycarbonate (1.0 g, containing double bond 5 mmol) and CH 2 Cl 2 25mL. When the polycarbonate represented by formula (II) was completely dissolved, mCPBA (1.52 g, 7.5 mmol) with a purity of 85% was added to the system, followed by stirring and reacting at room temperature for 36 hours.

[0026] After the reaction, insoluble matter was filtered off, and the filtrate was concentrated under reduced pressure, poured into 250 mL of methanol, and precipitated at 0° C. for 12 hours. The precipitate was centrifuged at 0°C, and the resulting precipitate was vacuum-dried at room temperature to constant weight. A total of 0.78 g of polycarbonate represented by formula (I) was obtained, with a yield of 78%.

[0027] The nuclear magnetic spectrum shows that the conversion rate of the double bond in the compound represented by the form...

Embodiment 2

[0029] With the polycarbonate shown in the formula (II) of number average molecular weight Mn=19665 (PDI=1.15) as substrate, in stirring bar and N 2 Add polycarbonate (1.0 g, containing double bond 5 mmol) and CH 2 Cl 2 30mL. After the polycarbonate represented by formula (II) was completely dissolved, mCPBA (2.0 g, 10 mmol) with a purity of 85% was added to the system, followed by stirring and reacting at room temperature for 48 hours.

[0030] After the reaction, the insoluble matter was filtered off, and the filtrate was concentrated under reduced pressure, poured into 300 mL of methanol, and precipitated at 0° C. for 12 hours. The precipitate was centrifuged at 0°C, and the resulting precipitate was vacuum-dried at room temperature to constant weight. A total of 0.86 g of polycarbonate represented by formula (I) was obtained, with a yield of 86%.

[0031] The nuclear magnetic spectrum shows that the conversion rate of the double bond in the compound represented by the ...

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Abstract

The invention belongs to the technical field of biomedicine novel materials, and in particular relates to aliphatic polycarbonate containing epoxy group and a preparation method of the aliphatic polycarbonate. The aliphatic polycarbonate containing epoxy group has a structure shown by formula (I). The method provided by the invention is used for preparing the aliphatic polycarbonate containing epoxy group, and through introducing functional group by wide nucleophilic ring-opening reactions, the research field and application space of polycarbonate functionalization can be greatly expanded. The formula is shown in the description.

Description

technical field [0001] The invention belongs to the technical field of biomedical new materials, and in particular relates to an aliphatic polycarbonate containing epoxy groups and a preparation method thereof. Background technique [0002] Aliphatic polycarbonates are an important class of biodegradable / absorbable polymers. It has a wide range of physical, chemical and biological properties, and there are many kinds. By changing the chemical structure of the main chain and introducing side chain functional groups, the polymer material can have a wide range of physical, chemical and biological properties to meet different needs. Due to the relatively simple structure of common aliphatic polycarbonates such as polytrimethylene carbonate (PTMC) and poly(2,2-dimethyltrimethylene carbonate) (PDTC), they lack functional groups that can be used for modification. limit their application in biomedicine. So in recent years, polycarbonate side chain functionalization is one of the h...

Claims

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Application Information

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IPC IPC(8): C08G64/42
CPCC08G64/42
Inventor 冯磊陈强
Owner CHANGZHOU HIGH TECH RES INST OF NANJING UNIV