UWSpace is currently experiencing technical difficulties resulting from its recent migration to a new version of its software. These technical issues are not affecting the submission and browse features of the site. UWaterloo community members may continue submitting items to UWSpace. We apologize for the inconvenience, and are actively working to resolve these technical issues.
 

Alkaline Treatment of Chitosan Membranes

Thumbnail Image

Files

Chen_Chuhua.pdf (7.42 MB)

Date

2022-03-22

Authors

Chen, Chuhua

Journal Title

Journal ISSN

Volume Title

Publisher

University of Waterloo

Abstract

Derived from deacetylation of chitin, which is one of the most abundant natural polymers, chitosan has been drawing extensive attention due to its outstanding properties, and potential in many applications in the forms of membranes, fibers, and gels. Insoluble in water and most common organic solvents, chitosan membranes are typically prepared by dissolving chitosan into a dilute organic acid to protonate its amino groups. Thus, after membrane preparation, an insolubilization step is necessary to deprotonate the amino groups. However, this process is always excessive, and the effects of alkaline treatment conditions have not been well studied. This study focuses on the influence of conditions in the alkaline treatment to improve membrane stability.

Description

Keywords

chitosan, chitosan membrane, alkaline treatment, membrane insolubilization, UV-vis

LC Keywords

Citation

URI

http://hdl.handle.net/10012/18115

Collections

Theses
Chemical Engineering