23 Jul Preparation method of amidoxime-hydroxylamine oxime cellulose/nano silver/chitosan composite aerogel
Abstract
The invention discloses a preparation method of an amidoxime-hydroxylamine oxime cellulose/nano silver/chitosan composite aerogel. The preparation method comprises the following steps: (1) preparing dialdehyde chitosan; (2) preparing an amidoxime-hydroxylamine oxime cellulose dispersion liquid; (3) preparing nano-silver on the surface of the amidoxime-hydroxylamine oxime cellulose in situ and preparing a composite sol of nano silver, amidoxime-hydroxylamine oxime cellulose and dialdehyde chitosan; and (4) carrying out injection molding, freeze drying and aerogel forming on the composite sol. According to the method disclosed by the invention, the nano-silver reduction process is green and environmentally friendly, and the preparation process of the aerogel is simple. The obtained composite aerogel is excellent in mechanical property, regular in tissue structure and good in biocompatibility, and can be used in the industrial wastewater treatment fields such as adsorption filtration, collaborative adsorption degradation and the like, and can also be used in the biomedical fields such as medical dressing, tissue engineering and the like.
Year: 2019
Country: CN
Doc No: 110256735