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Preparation method for PPS/PGS composite material shape memory elastomer

A technology of composite materials and elastomers, applied in the direction of coating, etc., can solve problems such as no practical application significance, and achieve good application prospects and easy operation

Active Publication Date: 2017-07-25
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reported shape transition temperature of PGS is below room temperature, which has no practical application significance.

Method used

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  • Preparation method for PPS/PGS composite material shape memory elastomer
  • Preparation method for PPS/PGS composite material shape memory elastomer
  • Preparation method for PPS/PGS composite material shape memory elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Purification of raw materials

[0028] 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.

[0029] (2) Synthesis of PGS

[0030] Add 31.05g of purified sebacic acid and 14.14g of glycerol into a three-necked flask under a nitrogen atmosphere, stir in an oil bath at 135°C under the protection of nitrogen for 24h, then vacuumize (3torr) for 24h, and bring to room temperature to obtain Pale yellow waxy solid.

[0031]

[0032] (3...

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Abstract

The invention relates to a preparation method for a PPS / PGS composite material shape memory elastomer. The preparation method comprises the following steps: (1) preparation of PGS, (2) preparation of PPS, and (3) preparation of the PPS / PGS composite material shape memory elastomer by compounding the PPS and the PGS. According to the preparation method, a polymer PPS having a high crystallization property is introduced into a PGS matrix to prepare a shape memory elastomer having shape transition temperature close to human body temperature (37 DEG C), and indocyanine green ICG having a light and heat conversion effect is introduced into the PPS / PGS composite material shape memory elastomer through surface coating modification treatment; furthermore, a light-controlled shape memory elastomer with a shape capable of being controlled at a fixed point is prepared, and better application is realized in medical fields such as minimally invasive surgery, sustained drug release and the like.

Description

technical field [0001] The invention belongs to the field of shape memory elastomers, in particular to a preparation method of PPS / PGS composite material shape memory elastomers. Background technique [0002] Shape memory means that after a product with an initial shape is deformed and fixed, it can be restored to its original shape by treatment with physical factors such as heat energy, light energy, and electrical energy, as well as chemical factors such as pH, phase transition reaction, and chelation reaction as stimuli. Phenomenon. 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 are also biodegradable, which makes them have great application potential in the biomedical field. [0003] Shape memory polymers (SMPs) are recently developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/00C08G63/16C08G63/12C08J7/06
CPCC08G63/12C08G63/16C08J7/065C08J2367/00C08J2367/02C08J2467/00C08J2467/02C08L67/00C08L67/02C08L2201/12C08L2205/02C08K5/42
Inventor 游正伟轩慧霞耿聪颖
Owner DONGHUA UNIV
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