ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Chitosan pyruvic acid derivatives was successfully prepared from chitosan and pyruvicacid under reducing conditions, via aldimine formation. The chemical structure of the derivativeswas proved by 13C NMR and IR. It was found ratio between glucose residues and pyruvic acid,reaction time, pH, and molecular weight of original chitosan had great influence on the degree ofsubstitution (DS). N-(1-carboxyethyl) chitosan (N-CE-CTS) showed similar moistureabsorption-retention curve and ability with HA, and much better ability than the original chitosan.Hydroxyl radical scavenging ratio of 4g/L chitosan and N-CE-CTS was 35.0% and 41.7%,respectively
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.963.pdf