Title:
METHOD FOR PREPARING POLYETHYLENE GLYCOL MODIFIED CHITOSAN FILM
Document Type and Number:
WIPO Patent Application WO/2019/051750
Kind Code:
A1
Abstract:
Disclosed in the present application is a method for preparing a polyethylene glycol modified chitosan film. The method comprises the following steps: dissolving 15-25 parts of chitosan powder in 30-40 parts of a formic acid solution having a mass fraction of 1%, then adding 10-20 parts of polyethylene glycol, and performing stirring at room temperature for 1-3 h; drying the mixed solution at the temperature of 40-50°C for 16-20 h to cure the solution to be a gelatinous membrane; after drying, immersing the membrane in 2% potassium hydroxide solution for stripping, washing same 3-5 times with deionized water, and air-drying same at room temperature to obtain a polyethylene glycol modified chitosan film. All raw materials are in parts by weight. The method provided by the present application is simple and easy to operate, and can obtain a polyethylene glycol modified chitosan film having an excellent adsorption effect.
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Inventors:
TAN LING (CN)
Application Number:
PCT/CN2017/101828
Publication Date:
March 21, 2019
Filing Date:
September 15, 2017
Export Citation:
Assignee:
TAN LING (CN)
International Classes:
C08J5/18; A61K31/722; C08J7/00; C08L5/08
Foreign References:
| CN103183840A | 2013-07-03 | |||
| CN105924659A | 2016-09-07 | |||
| CN104144692A | 2014-11-12 | |||
| CN101020131A | 2007-08-22 |
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