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Carboxymethyl Starch Octenylsuccinate: Microwave‐ and Ultrasound‐assisted Synthesis and Properties
Author(s) -
Čížová Alžbeta,
Sroková Iva,
Sasinková Vlasta,
Malovíková Anna,
Ebringerová Anna
Publication year - 2008
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.200800221
Subject(s) - microwave , starch , microwave irradiation , ultrasound , chemistry , pulmonary surfactant , nuclear chemistry , materials science , combinatorial chemistry , chemical engineering , catalysis , organic chemistry , biochemistry , computer science , telecommunications , engineering , physics , acoustics
The synthesis of water‐soluble octenylsuccinates of carboxymethyl starch (OS‐CMS) was performed with octenylsuccinic anhydride by assistance of microwave and ultrasound irradiation using the dimethyl sulphoxide/ p ‐toluenesulphonic acid system and DMSO as solvents for activation of CMS as well as reaction medium of the following esterification. The prepared OS‐CMS derivatives were characterized with regard to their structural, surface‐active and performance properties. The application of both microwave and ultrasound irradiation as energy sources permitted to shorten the esterification time to several minutes from 24 h of the previously reported conventional heating [33], whereby the reaction efficiencies were high and the water‐soluble derivatives exhibited excellent emulsifying efficiency as well as surfactant performance properties tested by washing power and antiredeposition efficiency. The results indicate also the high potential of both microwave and ultrasound energy sources to innovate and increase the efficiency of technological polysaccharide esterification processes.