Add time:09/26/2019 Source:sciencedirect.com
Chemical modification of the cassava starch was conducted through acylation by using Propionic anhydride (cas 123-62-6) as an esterifying reagent. The reaction was carried out in the presence of a pyridine catalyst and the effects of reaction variables such as the anhydride content, reaction time and reaction temperature on the degree of acylation were investigated. Results from Fourier transform infrared spectroscopy suggested that the hydroxyl groups in the starch molecules were converted into ester groups, accompanied by an increase in water stability of the starch. The propionyl content was found to be non-linearly dependent with the reaction variables. Scanning electron micrographs of the modified starch-blended polyurethane showed a better interfacial adhesion than the normal starch-blended polyurethane. However, results from the soil burial test showed that the modified starch experienced a slower biodegradation than the normal starch.
We also recommend Trading Suppliers and Manufacturers of Propionic anhydride (cas 123-62-6). Pls Click Website Link as below: cas 123-62-6 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View