Properties of Carboxymethylation Product from Mechanically Activated Cassava Starch (I)

Carboxymethyl starch was prepared by dry method from cassava starch that was mechanically activated for 60 min using a stirring-type ball mill as the starting material,NaOH as the catalyst and ClCH2COOH as the etherification agent.The solubility,transparency,frozen-thaw stability,anti-aging capability,anti-biodegradation capability and apparent viscosity of prepared carboxymethyl starch were investigated.Results indicated that carboxymethyl starch products from activated cassava starch exhibited high solubility,better transparency,strong anti-biodegradation capability,high apparent viscosity,excellent frozen-thaw stability and anti-aging capability.