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Material based on polyhydroxyalkanoate and preparation method and application of material

A technology of polyhydroxyalkanoate and polyhydroxyalkanoate, which is applied in the field of polyhydroxyalkanoate-based materials and its preparation, can solve the problems of lack of composition adjustment and shape memory function, and achieve good integration and good biocompatibility , the effect of extensive application value

Active Publication Date: 2013-04-10
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN1410132 discloses a vascular stent made of a blend of polyurethane and polyhydroxyalkanoate and its preparation method. The prepared stent only improves biocompatibility. , without shape memory

Method used

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  • Material based on polyhydroxyalkanoate and preparation method and application of material
  • Material based on polyhydroxyalkanoate and preparation method and application of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In a three-necked flask, add dimethyl sulfoxide as a solvent, then add liquefied MDI, raise the temperature by 60°C, then slowly add 1,4-dihydroxybutane (BDO) into the solution, keep the temperature for 2 hours, A polyurethane hard segment solution with a mass fraction of 10wt% was prepared.

[0039] At the same time, the commercial resin poly(3-hydroxybutyrate-4-hydroxybutyrate) solution dimethyl sulfoxide was used as a solvent, and mechanically stirred and dissolved in a water bath at 50°C for 24 hours to obtain a uniform 10wt% poly(3 -Hydroxybutyrate-4-hydroxybutyrate) solution.

[0040] Subsequently, 50 parts of polyurethane and 50 parts of poly(3-hydroxybutyrate-4-hydroxybutyrate) solution were uniformly mixed mechanically to obtain a uniform composite solution, and a solution of the polyhydroxy fatty acid-based material was obtained.

[0041] Further, the solution of the polyhydroxy fatty acid-based material was poured into a film, oven-dried at 100° C. for 48 ho...

Embodiment 2

[0044] In a three-necked flask, add N,N-dimethylformamide as a solvent, then add liquefied MDI, raise the temperature to 60°C, then slowly add N,N-bis(2-hydroxyethyl)isonicotinamide to the solution , keeping the temperature for 2 hours to prepare a 10wt% pyridine polyurethane solution.

[0045] At the same time, the commercial resin poly(3-hydroxybutyrate) solution N,N-dimethylformamide was used as a solvent, and mechanically stirred and dissolved in a water bath at 50°C for 24 hours to obtain a uniform 10wt% poly(3-hydroxybutyrate) butyrate) solution.

[0046] Subsequently, 55 parts of pyridine polyurethane, 40 parts of poly(3-hydroxybutyrate) solution, and 5 parts of terephthalic acid were uniformly mixed mechanically to obtain a uniform composite solution, and the solution of the polyhydroxy fatty acid-based material was obtained.

Embodiment 3

[0048] The commercial resin poly(3-hydroxybutyrate) was dissolved in chloroform as a solvent, refluxed in a water bath at 50°C, and mechanically stirred for 24 hours to obtain a uniform 10wt% polyβ-hydroxybutyrate-β- Hydroxyvalerate solution.

[0049] Subsequently, take 40 parts of poly-β-hydroxybutyrate-β-hydroxyvalerate / chloroform solution into a 500mL burner, add 20 parts of TDI, 39 parts of hydroquinone glycol polycondensate (BA1EO) , 1 part of water and 1 mL of polyurethane tin catalyst, mechanically vigorously stirred for about 30 minutes, the mixture was mixed evenly, and the reaction began to expand, and then placed in an oven at 120° C. to continue the reaction for 5 to 8 hours to obtain the polyhydroxy fatty acid-based material.

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Abstract

The invention relates to the technical field of intelligent materials, and provides a shape memory composite material based on polyhydroxyalkanoate. The composite material comprises the following components in parts by weight: 30-70 parts of polyhydroxyalkanoate, 30-70 parts of polyurethane, and 0-10 parts of compatilizer, wherein the molecular weight of polyhydroxyalkanoate is greater than 10,000 g / mol; polyurethane is prepared by isocyanate and micromolecular alcohol or amine with the molecular weight less than 600 g / mol; and the content of isocyanate and micromolecular alcohol or amine in polyurethane is greater than 70 wt%. The invention further provides a preparation method of the material based on polyhydroxyalkanoate, and the application of the material based on polyhydroxyalkanoate in the aspects of biomedical engineering, textile, toys and daily supplies. The material has good biological compatibility, does not form thrombi when contacted with blood, is integrated with tissue cells well, and has a shape memory function, the shape fixing rate is greater than 80%, and the shape recovery rate is greater than 80%.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a polyhydroxy fatty acid-based material and its preparation method and application. Background technique [0002] The shape memory effect means that a material with an initial shape can be deformed and fixed to obtain a temporary deformation through external conditions; and after sensing changes in the external environment, it can change its shape back to the original shape. Currently, materials with shape memory effects include shape memory alloys, shape memory ceramics, and shape memory polymers. Compared with other materials, polymer shape memory materials have the characteristics of light weight, easy deformation, convenient processing, and wide temperature adjustable range. Therefore, shape memory polymers are widely used in textile, medical, aerospace, engineering and other fields. [0003] The design principles of shape memory polymers are all d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L75/04C08G18/42
Inventor 陈少军陈仕国戈早川袁红明
Owner SHENZHEN UNIV
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