23 Jul Attapulgite-chitosan composite gel and preparation method thereof
Abstract
The invention relates to the field of deep processing of clay, and discloses an attapulgite-chitosan composite gel and a preparation method thereof. The composite gel comprises the following components according to a mass ratio of attapulgite, chitosan, glutaraldehyde and borax is 100:(12-35): (1.2-5.25):(3-5). Attapulgite-based composite hydrogel is prepared by a sol-gel method by using the attapulgite as a main material, the chitosan as an auxiliary material and the glutaraldehyde and the borax as double crosslinking agents. The composite hydrogel has an excellent three-dimensional pore structure and excellent mechanical properties, has good adsorption, slow-release performance and immobilization ability, and can be used as medical functional materials such as a mask, a medicinal dressing or a tissue engineering scaffold, and can be further lyophilized into an aerogel with more wide application. The aerogel obtained by a preparation technology has excellent mechanical properties, andhas the elastic modulus which can be adjusted within the range of 15-193MPa. The technology is simple, the preparation cycle is short, and requirements of large-scale production are met.
Year: 2019
Country: CN
Doc No: 109158058