Journal
CARBOHYDRATE POLYMERS
Volume 79, Issue 3, Pages 738-746Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2009.09.031
Keywords
Alginate; Chitosan whiskers; Wet spinning
Categories
Funding
- Development and Promotion of Science and Technology Talent Project (DPST)
- Ministry of Education
- Petroleum and Petrochemical College, Chulalongkorn University
- Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University
- Kansai University
Ask authors/readers for more resources
incorporation of chitosan whiskers in alginate fibers was achieved by mixing homogenized chitosan whisker colloidal suspension with 6% w/v sodium alginate aqueous solution, followed by extrusion into fiber form by wet spinning. The chitosan whiskers were prepared by deacetylation of chitin whiskers which had been obtained by acid hydrolysis of chitin flakes from shrimp shells. The average length and width of the whiskers were 309 and 64 nm, respectively, with the average aspect ratio being similar to 4.8. Study on the mechanical properties of the neat alginate and the alginate/chitosan whiskers nanocomposite yarns (30 individual fibers) revealed that, at 1.0% w/w, noticeable improvement in the tensile strength of the nanocomposite yarns was observed, at the expense of the elongation at break. The release of the whiskers from the nanocomposite yarns was dose-dependent and it occurred based on the surface erosion phenomenon. The release half-lives of the nanocomposite yarns containing 0.2% and 0.6% w/w of the whiskers were about 6 h and less than I h, respectively. Incorporation of the chitosan whiskers within the alginate yarns imparted the antibacterial activity against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli to the resulting alginate/chitosan whiskers nanocomposite yarns, which rendered them as effectual wound dressing materials. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available