Cellulose-chitosan compound and preparation method thereof

Abstract

The invention discloses a cellulose-chitosan compound and a preparation method thereof. According to the preparation method, polysaccharides biomass resources cellulose and chitosan which are quite abundant are used for preparing the cellulose-chitosan compound in a novel ethidene diamine or potassium thiocyanate solvent system. The compound has strong capacity of absorbing heavy metal ions Cu<2+>,Pb<2+> and Cd<2+>; and the solvent ethidene diamine or potassium thiocyanate adopted by the method is low in price and can be recycled, thus reducing pollution to the environment.

Description

technical field

[0001] The invention belongs to the field of polymer composite materials, and relates to a cellulose-chitosan composite and a preparation method thereof. Background technique

[0002] With the rapid development of science and technology and economy, people's living standards have been greatly improved. However, the rapid development has also caused a series of environmental problems, and heavy metal pollution is one of them. Heavy metals cannot be degraded by microorganisms, and can be enriched in water bodies to cause water pollution and endanger human health. For example, lead can directly damage the brain cells of the human body, especially the nervous system of the fetus, which can cause congenital mental retardation of the fetus. At present, the methods commonly used to treat heavy metal ion wastewater include: chemical precipitation method, activated carbon adsorption method, ion exchange method, membrane filtration method, reverse osmosis method, liqu...

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