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Red light responsive shape memory polymer material and preparation method thereof

A polymer material and light-responsive technology, applied in pharmaceutical formula, medical science, prosthesis, etc., can solve the problems of poor biocompatibility and biodegradability, and achieve the effect of shape restoration and strong penetration

Active Publication Date: 2018-07-31
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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  • Red light responsive shape memory polymer material and preparation method thereof
  • Red light responsive shape memory polymer material and preparation method thereof
  • Red light responsive shape memory polymer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation and application of shape memory polymers with infrared photoresponsiveness

[0049] Such as figure 1 Shown is a schematic diagram of the preparation of shape memory polymers containing infrared light-responsive porphyrins.

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

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

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, React at 140°C for 3 hours, and then add 20 mL of solvent to dilute, and the obtained product is purified by ether precipitation for 3 times, and vacuum-dried to obtain an amphiphilic polymer. Take 4g of amphiphilic polymer and 3mg of porphyrin, add 10mL of THF to completely disperse and dissolve, add alcohol amine dropwise to adjust the pH to slightly alkaline, then slowly add 10mL of deionized water dropwise, and evaporate THF at a constant temperature of 50°C after the dropwise addition to prepare Micellar bodies encapsulating porphyrins. Add glutaraldehyde, a crosslinking agent with a molar ratio of 1:1 to N-vinylpyrrolidone, to the micellar solution, and dry and solidify at room temperature to form a film.

[0071] The prepared membrane material is deformed in an environme...

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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 polymer material provided by the invention is obtained by cross-linking reactive group-containing micelles, wrapping porphyrin, into a film; the polymer material is prepared from the following raw materials in parts by weight:20-40 parts of allyl monomer containing hydrophobic groups, 1-5 parts of allyl monomer containing hydrophilic groups, 1-5 parts of allyl monomer containing reactive groups, 2-5 parts of organic solvent, 0.5-1 part of radical initiator, 1-5 parts of cross-linking agent and 0.0005-0.005 part of porphyrin. The red light responsive shape memory polymer material is endowed with a red light responsive shape memory function invention by wrapping the porphyrin having a photothermal conversion function in the micelles, avoids the traditional contact type triggering response, and can realize the manipulation of the material shape memory behavior remotely; furthermore, as an organic compound inherent in a living body, the porphyrin does not cause harmful side effects to the living body; the red lightdoes not damage the skin when penetrating the living body, and the energy loss is less; therefore, the red light responsive shape memory polymer material is expected to be applied to the photothermaltreatment in the living body.

Description

technical field [0001] The invention relates to a red light responsive shape memory polymer material and a preparation method thereof, belonging 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, and the development of 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, the shape memory polymer refers to a product with an initial shape. After changing its initial shape and fixing it under certain conditions, it can be restored to its original shape by the stimulation of external conditions (such as heat, light, electricity, chemical induction, etc.). Shaped polymer materials. Compared with shape memory alloys and ceramics, shape memory polymers have become a new type o...

Claims

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Application Information

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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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