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A red light responsive shape memory polymer material and preparation method thereof

A technology of polymer materials and memory materials, applied in the field of functional materials, can solve the problems of poor biocompatibility and biodegradability, and achieve the effect of shape recovery and strong penetration

Active Publication Date: 2019-07-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the nanofillers discussed so far, including gold nanoparticles, have a common problem, which is their poor biocompatibility and biodegradability, which limits the light-induced shape based on the photothermal effect. Application of memory polymer in biomedical field

Method used

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  • A red light responsive shape memory polymer material and preparation method thereof
  • A red light responsive shape memory polymer material and preparation method thereof
  • A red light responsive shape memory polymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation and use of shape memory polymer with infrared light responsiveness

[0049] Such as figure 1 Shown is a schematic diagram of preparing a shape memory polymer containing infrared light-responsive porphyrin.

[0050] (1) Solvent ethylene glycol butyl ether 10mL; 30.06g of vinyl monomers containing hydrophobic groups include: 20.77g of methyl methacrylate (MMA) and 9.29g of butyl acrylate (BA); containing hydrophobic groups A total of 1.05g of vinyl monomers include: acrylic acid (AA) 1.05g; a total of 2g of vinyl monomers containing reactive groups include: diacetone acrylamide (DAAM) 2g; free radical initiator tertiary benzoic acid Butyl ester (TBPB) 0.84g. After reacting at 140°C for 3 hours, adding 20 mL of solvent to dilute, the product was purified by ether precipitation three times, and vacuum dried to obtain the amphiphilic polymer MBDA.

[0051] (2) Take 1.6858g of amphiphilic polymer MBDA and a certain amount (0, 0.5mg, 1.5mg, 5mg) of porphyrin (TPP), a...

Embodiment 2

[0070] Solvent dimethyl sulfoxide 10mL, monomer methyl acrylate 0.32mol, ethyl methacrylate 0.08mol, N-vinylpyrrolidone 0.016mol, methacrylic acid 0.016mol, initiator tert-butyl peroxybenzoate 0.08mol, After reacting at 140°C for 3 hours, adding 20 mL of solvent to dilute, the product was purified by ether precipitation three times, and dried under vacuum to obtain an amphiphilic polymer. Take 4g of amphiphilic polymer and 3mg of porphyrin, add 10mL of THF to disperse and dissolve completely, add alcoholamine dropwise to adjust the pH to alkalescence, then slowly add dropwise 10mL of deionized water, after the completion of the addition, evaporate THF at a constant temperature of 50℃ to prepare Encapsulate porphyrin micelles. The micellar solution is added with the crosslinking agent glutaraldehyde with a molar ratio of 1:1 to the N-vinylpyrrolidone, and dried and cured at room temperature to form a film.

[0071] The prepared membrane material is deformed in an environment of 7...

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Abstract

The invention discloses a red light responsive shape memory polymer material and a preparation method thereof, belonging to the technical field of functional materials. The macromolecular material of the present invention is obtained by cross-linking and film-forming micelles containing reactive groups that wrap porphyrin, and the parts by weight of the raw materials and each raw material are: 20-40 olefinic monomers containing hydrophobic groups 1-5 parts of vinyl monomers containing hydrophilic groups, 1-5 parts of vinyl monomers containing reactive groups, 2-5 parts of organic solvents, 0.5-1 parts of free radical initiators, 1-5 parts of joint agent, 0.0005-0.005 parts of porphyrin. The invention endows the material with the shape memory function of red light response by encapsulating the porphyrin with photothermal conversion in the micelles, avoiding the traditional contact trigger response, and realizing the remote control of the shape memory behavior of the material; at the same time, the porphyrin acts as The organic compounds in the organism itself will not cause harmful side effects to the organism, and the red light will not damage the skin when it penetrates the organism, and the energy loss is small, so it is expected to be applied to photothermal therapy in the organism.

Description

Technical field [0001] The invention relates to a red light-responsive shape memory polymer material and a preparation method thereof, and belongs to the technical field of functional materials. Background technique [0002] As a new type of intelligent polymer material, shape memory materials are ubiquitous in our lives, especially in the field of biomedicine. The development of their related industries will bring huge economic and social benefits to mankind. Common shape memory materials include shape memory alloys, shape memory ceramics, and shape memory polymers. Among them, shape memory polymer refers to a product with an initial shape. After changing and fixing its initial shape under certain conditions, it can be restored to its original shape by stimulation of external conditions (such as heat, light, electricity, chemical induction, etc.) Shaped polymer material. Compared with shape memory alloys and ceramics, shape memory polymers have become a new type of shape memor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/58C08F226/10C08J3/07A61L27/16A61L27/50
CPCA61L27/16A61L27/50C08F220/14C08J3/07A61L2400/16C08J2333/12C08J2433/08C08F220/18C08F226/10C08F220/06C08F220/1804C08F220/58C08F220/1802
Inventor 张洪吉钱网秋陈益鸣施冬健李小杰马丕明东为富
Owner JIANGNAN UNIV
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