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Preparation method of poly(sebacoyl diglyceride) shape memory elastomer

A technology of sebacoyl diglyceride and sebacoyl, which is applied in the field of preparation of poly-shape memory elastomers, and can solve the problems of limited application, melting point drop, and inability to maintain

Active Publication Date: 2017-08-11
DONGHUA UNIV
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  • Application Information

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Problems solved by technology

[0004] PGS prepolymer is a semi-crystalline polymer at room temperature, its melting point (T m ) is near the human body temperature, which can be used as the shape transition temperature, but after PGS cross-linking, its melting point has dropped significantly
The shape transition temperature of PGS reported in the literature is around 10.8°C (melting point), which makes it unable to maintain its temporary shape at room temperature, which limits its practical application.

Method used

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  • Preparation method of poly(sebacoyl diglyceride) shape memory elastomer

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Embodiment 1

[0025] (1) Purification of raw materials

[0026] Recrystallization of sebacic acid: Weigh 50g of sebacic acid to be purified, add it to a 500ml three-neck round bottom flask, add a rotor, connect the condensation reflux device, place the flask in an oil bath at 80°C, and gradually add ethanol Stir until the solution is clear and the sebacic acid is completely dissolved. Pour the solution in the flask into a beaker, cool at room temperature, let stand to allow the sebacic acid to crystallize, and then carry out suction filtration. After the above steps were repeated three times, the product was dried in a vacuum oven at 60° C. for 24 h.

[0027] (2) Synthesis of PSeD monomer sebacoyl glycidyl ester

[0028] Use sodium wire to remove water in toluene, and obtain anhydrous toluene after reflux for future use. The water in the triethylamine was removed with sodium hydroxide, and anhydrous triethylamine was obtained after reflux for subsequent use. A 500ml three-neck round-bott...

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Abstract

The invention relates to a preparation method of poly(sebacoyl diglyceride) shape memory elastomer. The preparation method \ comprises the following steps: (1) preparing a monomer sebacoyl glycidyl ester; (2) preparing poly(sebacoyl diglyceride); and (3) preparing the poly(sebacoyl diglyceride) shape memory elastomer. The crosslinking degree of PSeD is adjusted to make the crosslinked PseD have elasticity, shape memory effect and thermoplasticity; and the crosslinked PSeD has good shape memory performance, the shape transition temperature is between room temperature and the human body temperature, and the crosslinked PSeD is expected to be developed temperature response shape memory smart materials (the shape memory performance nearby the human body temperature is realized).

Description

technical field [0001] The invention belongs to the field of shape-memory elastomers, in particular to a preparation method of poly(sebacyl diglyceride) shape-memory elastomers. Background technique [0002] The so-called "shape memory" means that after the product with the initial shape is deformed and fixed, it can be restored by the treatment of physical factors such as heat energy, light energy, electric energy, and chemical factors such as pH, phase transition reaction and chelation reaction as stimuli. The phenomenon of the initial shape. Shape memory materials include shape memory alloys, shape memory ceramics and shape memory polymers. Compared with shape memory alloys and ceramics, shape memory polymers have the advantages of large deformation, adjustable deformation temperature and functionalization. Some polymers also have biocompatibility and biodegradability, making them useful in the field of biomedicine. Great application potential. [0003] Bioelastomers (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/78C08G63/12C08G63/668C08J3/24
Inventor 游正伟耿聪颖轩慧霞
Owner DONGHUA UNIV
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