Preparation method of gold nanorod and polymer hybrid material with self-healing properties

Abstract

The invention discloses a preparation method of a gold nanorod and polymer hybrid material with a self-healing performance and relates to organic / inorganic hybrid nano materials.The preparation method includes enabling the surfaces of prepared gold nanorods to be provided with reactive aminos by a ligand exchange method, preparing P(MMA-co-AAEM)-b-POEGMA copolymers with proportion-adjustable chain segments by a reversible addition-fragmentation chain transfer polymerization method, and doping the gold nanorods into polymers to achieve good dispersion of the gold nanorods in the polymers under the action of imine bonds and hydrogen bonds formed between the aminos and the polymers so as to obtain the hybrid material.By the aid of effective light-heat conversion performance of the gold nanorods, the hybrid material can be subjected to defect self-healing under the action of near-infrared light.

Description

technical field [0001] The invention relates to the field of organic / inorganic hybrid nanomaterials, in particular to a method for preparing a gold nanorod and polymer hybrid material with self-repairing properties. Background technique [0002] During use, due to the influence of external thermal energy, mechanical action and chemical factors, micro-cracks or even cracks will appear inside the polymer material, which will affect its normal mechanical properties and service life. As the fuse that destroys the properties of materials, microcracks inside the material will eventually lead to macroscopic cracking of the material. Therefore, how to repair the internal damage of composite materials has become a research hotspot for scientists. Macroscopic cracks or delaminations that are visible to the naked eye on the material surface can be repaired through appropriate manual operations, but once micro-cracks appear inside the material, it is difficult to lock the damaged area a...

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Problems solved by technology

Chinese patent CN103113745A discloses the preparation and self-repair method of carbon fiber / gold nanoparticle / polyethersulfone composite material with interfacial self-healing properties. First, the carbon fiber / gold nanoparticle fiber is prepared by electric pulse deposition method, and then combined with polyethersulfone pellets Press molding to form a carbon fiber / gold nanoparticle / polyethersulfone composite material with interfacial self-healing properties. This method is mainly used for interface repair to solve the problem that traditional carbon fiber composite materials are prone to cracks and reduce the life of the material.

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