Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models

Effect of NaOH concentration on the sorption isotherm of carboxymethyl rice starch (CMSr) films was investigated. Sorption isotherms are important for predicting moisture sorption properties of the films via moisture sorption empirical models. The moisture sorptions isotherm of CMSr films synthesize...

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Main Authors:	Pornchai Rachtanapun, Wirongrong Tongdeesoontorn
Format:	Journal
Published:	2018
Subjects:	Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy
Online Access:	https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80051780260&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49691
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Institution:	Chiang Mai University

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spelling	th-cmuir.6653943832-496912018-09-04T04:29:47Z Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models Pornchai Rachtanapun Wirongrong Tongdeesoontorn Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy Effect of NaOH concentration on the sorption isotherm of carboxymethyl rice starch (CMSr) films was investigated. Sorption isotherms are important for predicting moisture sorption properties of the films via moisture sorption empirical models. The moisture sorptions isotherm of CMSr films synthesized with different NaOH concentrations (0, 10, 20, 30, 40 and 50% w/v) were studied at various relative humidity (16, 35, 55 and 76% RH), at 25±1°C. The equilibrium moisture content of the films increased dramatically above aw= 0.6. Guggenheim-Anderson-de Boer (GAB), Brunauer-Emmett-Teller (BET) and Oswin sorption models were fitted to the experimental data. The results showed that the increase in NaOH concentration caused a decrease in the monolayer water content (M0) of the films. The GAB model was found to be the best-fit model for CMSr films at aw0.1-0.76, 25±1°C. 2018-09-04T04:05:35Z 2018-09-04T04:05:35Z 2011-08-22 Journal 01252526 2-s2.0-80051780260 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80051780260&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49691
institution	Chiang Mai University
building	Chiang Mai University Library
country	Thailand
collection	CMU Intellectual Repository
topic	Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy
spellingShingle	Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy Pornchai Rachtanapun Wirongrong Tongdeesoontorn Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
description	Effect of NaOH concentration on the sorption isotherm of carboxymethyl rice starch (CMSr) films was investigated. Sorption isotherms are important for predicting moisture sorption properties of the films via moisture sorption empirical models. The moisture sorptions isotherm of CMSr films synthesized with different NaOH concentrations (0, 10, 20, 30, 40 and 50% w/v) were studied at various relative humidity (16, 35, 55 and 76% RH), at 25±1°C. The equilibrium moisture content of the films increased dramatically above aw= 0.6. Guggenheim-Anderson-de Boer (GAB), Brunauer-Emmett-Teller (BET) and Oswin sorption models were fitted to the experimental data. The results showed that the increase in NaOH concentration caused a decrease in the monolayer water content (M0) of the films. The GAB model was found to be the best-fit model for CMSr films at aw0.1-0.76, 25±1°C.
format	Journal
author	Pornchai Rachtanapun Wirongrong Tongdeesoontorn
author_facet	Pornchai Rachtanapun Wirongrong Tongdeesoontorn
author_sort	Pornchai Rachtanapun
title	Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
title_short	Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
title_full	Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
title_fullStr	Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
title_full_unstemmed	Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
title_sort	effect of naoh concentration on sorption isotherm of carboxymethyl rice starch films and prediction models
publishDate	2018
url	https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80051780260&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49691
_version_	1681423455602343936

Effect of NaOH concentration on sorption isotherm of carboxymethyl rice starch films and prediction models

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