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Polyester elastomer and preparation method thereof

A technology of elastomers and polyesters, applied in the field of polymer materials, can solve the problems of application limitations of bioelastomers, and achieve the effects of no catalyst, good biocompatibility, and simple preparation methods

Inactive Publication Date: 2010-12-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the currently reported bioelastomers, silicone rubber and polyurethane are the most researched and applied. With the development of clinical medicine and tissue engineering, the performance requirements of biomedical materials are getting higher and higher. Traditional bioelastomers are used in the medical field. There are certain limitations in the further application of

Method used

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  • Polyester elastomer and preparation method thereof
  • Polyester elastomer and preparation method thereof
  • Polyester elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh a certain amount of monomers (4.50g xylitol, 3.85g itaconic acid) according to the molar ratio of xylitol and itaconic acid 1:1 respectively, add them to a 50mL three-necked flask, vent nitrogen, and oil bath heating control After the temperature is 140°C and the reaction material is completely melted, magnetic stirring is started, and the reaction is kept constant for 4 hours to obtain the prepolymer. Pour the prepolymer into a polytetrafluoroethylene mold for natural leveling, put it in a vacuum oven, and crosslink at 150°C for 14 hours to obtain a polyester elastomer. The chemical reaction formula is:

[0036]

[0037] R: H or -CO(CH 2 ) 6 COO-.

Embodiment 2

[0039] Weigh a certain amount of monomers (4.50g xylitol, 3.54g succinic acid) according to the molar ratio of xylitol and succinic acid at 1:1 respectively, and add them to a 50mL three-necked flask with nitrogen and oil bath heating to control the temperature at After the reaction materials were completely melted at 140°C, magnetic stirring was started, and the reaction was kept at a constant temperature for 9 hours to obtain the prepolymer. Pour the prepolymer into a polytetrafluoroethylene mold and level it naturally, put it in a vacuum oven, and crosslink at 150°C for 24 hours to obtain a polyester elastomer. The chemical reaction formula is:

[0040]

[0041] R: H or -CO(CH 2 ) 6 COO-.

Embodiment 3

[0043] Weigh a certain amount of monomers (xylitol 3.32g, dodecanedioic acid 5.02g) according to the molar ratio of xylitol and dodecanedioic acid 1:1, add them to a 50mL three-necked flask, and heat in an oil bath After controlling the temperature at 160°C to completely melt the reaction materials, start magnetic stirring and vacuum, and react at a constant temperature for 20 hours to obtain polyester elastomers. The obtained elastomer is then hot-pressed and cold-pressed by a flat vulcanizer to obtain an elastomer sample, which is cut to prepare a standard sample, and various mechanical performance tests are performed. The results are shown in Table 1. The chemical reaction formula is:

[0044]

[0045] R: H or -CO(CH 2 ) 6 COO-.

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Abstract

The invention relates to a polyester elastomer and a preparation method thereof. The xylitol base polyester elastomer is obtained by adopting a melting polycondensation method with xylitol as a main elastomer and itaconic acid, succinic acid, dodecanedioic acid, hexadecanedioic acid, octadecyl diacid and octadecadienoic acid as comonomers. The elastomer has higher biocompatibility and biodegradability and low toxicity; the xylitol belongs to a polyhydroxyl monomer; when the xylitol copolymerized with other monomers, the xylitol can adjust the crosslinking density of a polymer by changing the category and composition of the comonomer, thereby realizing controllable performance; and accordingly, the polymer has a wide application range. The invention has the advantages of simple preparation method, no catalyst and simple post treatment, and the obtained polyester elastomer has high biocompatibility; by controlling monomer molar ratio and reaction condition, the mechanical performance, hydrophobic performance and water absorption rate of the material can be adjusted; and the material is expected to be used as a medicament slow-release carrier, a styptic preparation, bone wax, a tissue engineering bracket, a surgical operation anti-adhesion film, and the like.

Description

Technical field [0001] The invention relates to a polyester elastomer, and further to a xylitol-based elastomer and a preparation method thereof, and belongs to the technical field of polymer materials. Background technique [0002] The development of the chemical industry is highly dependent on petrochemical resources. At present, about 95% of chemicals are produced through petrochemical methods. In recent years, the shortage of petroleum resources and the continuous increase in petroleum consumption have caused a great impact on the chemical industry. Therefore, the development of non-petroleum-based green chemical raw materials is a way for the continuous development of the chemical industry. Moreover, most of the new organic polymers synthesized from biomass monomers can be degraded into carbon dioxide and water in nature, which can alleviate the current "white pollution" problem caused by plastics. [0003] Compared with metals and ceramics, biomedical polymer materials are m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/12C08G63/78C08J3/24
Inventor 东为富陈明清吴畏倪忠斌杨海鹏
Owner JIANGNAN UNIV
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