Generic Films and Fibers from Polysaccharides: Chitosan and Alginate
Type of Degreethesis
DepartmentPolymer and Fiber Engineering
MetadataShow full item record
Chitosan and alginate are both extracted from natural resources, and both are biocompatible, biodegradable, and hydrophilic. Thus, chitosan-alginate biopolymer mixtures have the potential to form new functional polymers towards better performance, which can be utilized in different applications. Chitosan-alginate polymer films and fibers were prepared. Possible interactions and the effects of each component were investigated. Miscibility, thermal stability, mechanical, and morphological properties of chitosan-alginate films were studied. We found that the film with ratio of 60:40 chitosan to alginate has the highest modulus and the highest tensile strength. The film with 80% chitosan content shows antibacterial activity. Furthermore, we developed a novel method to form wet-spun chitosan-alginate fibers with no additive and analyzed their mechanical and morphological properties. Roughness of the fibers increased with more chitosan content which reversely affected the tenacity.
- Generic Films and Fibers from Polysaccharides - Chitosan and Alginate.pdf