Process for preparing original position of nanometer laminated composite material

Abstract

The present invention is in-situ process of preparing nanometer composite material, and belongs to the field of composite material preparing technology. The in-situ preparation process of nanometer composite material includes the following steps: 1. dissolving block copolymer in 2M hydrochloric acid solution, adding precursor Fe(CO)5 slowly via stirring, adding ethyl silicate, filtering, drying the precipitant, calcining in a muffle furnace and heat treating the obtained brown powder in a vacuum furnace; and 2. treating polyisopropyl acrylamide through a cyclic 'freezing-degasing-defrosting' process , heating to react, flushing obtained dark brown powder with alcohol, filtering, drying, etc. By means of the self-assembling process of mesoporous material, nanometer composite material possessing magnetic performance and temperature stimulation responding performance and capable of being used as medicine carrier is prepared.

Description

technical field

[0001] The invention relates to a preparation method in the technical field of composite materials, in particular to an in-situ preparation method of nanocomposite materials. Background technique

[0002] The mesoporous silica drug delivery system with magnetic function has potential applications in many aspects such as site-controlled release. It can guide drugs to diseased tissues to achieve site-specific drug release. It has been reported that the release of genes in mesoporous materials is controlled by using magnetic iron oxides as gates. Lin et al. reported the MCM-41 drug release system using superparamagnetic ferric oxide nanoparticles as a cap-shaped control switch. Other researchers have reported mesoporous silica composites using commercially available magnetic nanoparticles as cores as carrier materials for bioseparation and catalysts. However, these reported systems are basically based on mesoporous MCM-41 with a pore diameter of only 2-4 nm, w...

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