<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Abstract: Chemical modification of alginic acid has been done by ultrasonic irradiation to obtain its methylated, ethylated and isopropylated derivatives. The influence of ultrasonic frequency and power on esterification process of alginic acid has been investigated. Alginate derivatives have been characterized by degree of esterification (DE) and IR-FT spectroscopy. It has been found that 45 kHz ultrasonic frequency accelerated modification process as reduced the reaction time from 16 hours to 2 hours. The obtained results showed that ultrasound irradiation increased the reaction efficiency in methanol and depended on the ratio of the M/G.</p></abstract>

: Chemical modification of alginic acid has been done by ultrasonic irradiation to obtain its methylated, ethylated and isopropylated derivatives. The influence of ultrasonic frequency and power on esterification process of alginic acid has been investigated. Alginate derivatives have been characterized by degree of esterification (DE) and IR-FT spectroscopy. It has been found that 45 kHz ultrasonic frequency accelerated modification process as reduced the reaction time from 16 hours to 2 hours. The obtained results showed that ultrasound irradiation increased the reaction efficiency in methanol and depended on the ratio of the M/G.

Chemical modification of alginic acid by ultrasonic irradiation

University of Food Technologies – Plovdiv, Department of Organic Chemistry, 26 Maritza Blvd. 4002

Acta Scientifica Naturalis

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Chemical modification of alginic acid by ultrasonic irradiation"}

: Chemical modification of alginic acid has been done by ultrasonic irradiation to obtain its methylated, ethylated and isopropylated derivatives. The...

Chemical modification of alginic acid by ultrasonic irradiation

Published Online: Mar 26, 2016

Page range: 13 - 18

Received: Oct 30, 2015

Accepted: Mar 11, 2016

DOI: https://doi.org/10.1515/asn-2016-0002

Keywords
ultrasound-assisted synthesis, alginic acid, methyl alginate, ethyl alginate, i-propyl alginate

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Chemical modification of alginic acid by ultrasonic irradiation

Published Online: Mar 26, 2016

Page range: 13 - 18

Received: Oct 30, 2015

Accepted: Mar 11, 2016

DOI: https://doi.org/10.1515/asn-2016-0002

Keywordsultrasound-assisted synthesis, alginic acid, methyl alginate, ethyl alginate, i-propyl alginate

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
ultrasound-assisted synthesis, alginic acid, methyl alginate, ethyl alginate, i-propyl alginate