Composite material film containing poly N-isopropylacrylamide component and preparation method thereof

Abstract

The invention relates to a composite material film containing a poly N-isopropylacrylamide component and a preparation method thereof. A film forming material of the composite film is poly N-isopropylacrylamide and chitosan components, wherein the mass content of the chitosan components is from 10% to 70%, and the balance of the poly N-isopropylacrylamide components. The preparation method comprises the steps of: fully mixing a solution containing the poly N-isopropylacrylamide (PNIPAAm) with the proportion ratio and a cross-linking chitosan solution for reaction under stirring; paving and drying the reactants; neutralizing the reactants by an alkaline solution until the pH of the solution is from 6 to 7; and cleaning by water to remove impurities and obtain the composite material film product. The composite material film has good thermosensitivity and uniform film forming property, improves the property of poor mechanical performance under a swelling state of the PNIPAAm (poly N-isopropylacrylamide), greatly widens the application range, and has more convenient application in the aspects of drug slow release, material separation and purification as well as medical materials. The preparation method is simple and convenient.

Description

Composite material membrane containing poly(Ni)isopropylacrylamide component and preparation method thereof technical field The invention relates to a composite material film with temperature-sensitive properties, in particular to a temperature-sensitive composite material film containing polyazidopropylacrylamide component, and a related preparation method. Background technique Poly(NIPAAm) belongs to a kind of intelligent material, which has good temperature sensitivity and can shrink or swell dozens of times or even hundreds of times below the critical solution temperature within about 1 °C, so it is obtained He has done extensive research, mainly in the fields of medical materials, biomaterials, chemical mechanical valves and sensing elements. However, existing studies have reported that PNIPAAm has poor mechanical strength and cannot even bear its own gravity in the swollen state. In order to improve the mechanical strength of PNIPAAm, introducing materials with high...

AI Technical Summary

Problems solved by technology

However, existing studies have reported that PNIPAAm has poor mechanic

Images