Sintesis dan sifat termal natrium kanji sulfat dioscorea pentaphylla

Translated title of the contribution: Synthesis and thermal properties of dioscorea pentaphylla sodium starch sulfate

Research output: Contribution to journalArticle

Abstract

Dioscorea pentaphylla starch was modified by sulphation and neutralization to produce sodium starch sulfate. The sulphation reaction was carried out with sulphuric acid in ethanol and water at 0°C. The degree of substitution was calculated based on the percentages of carbon and sulphur determined using CHNS elemental analyzer. Sodium starch sulfate which has high degree of substitution and percentage of yield ratio by weight was chosen and characterized by Fourier transform infrared (FT-IR) spectrum and X-ray diffraction (XRD) profile. The presence of two peaks belonging to stretching vibrations of C-O-S and S=O in the FT-IR spectrum and the different of peaks produced in the XRD diffraction pattern proved that the reaction occurred in the starch structure. Thermal properties were also determined using differential scanning calorimetry (DSC) and termogravimetry analysis (TGA). Sodium starch sulfate produced has a good thermal stability because of the decomposition temperature of 265oC. Sodium starch sulfate is suitable as an additive in the production of heat resistance hydrogel, organogel and film with anionic properties because degradation does not occur below this temperature.

Original languageMalay
Pages (from-to)1549-1555
Number of pages7
JournalSains Malaysiana
Volume46
Issue number9
DOIs
Publication statusPublished - 1 Sep 2017

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Starch
Sulfates
Thermodynamic properties
Sodium
Fourier transforms
Substitution reactions
Infrared radiation
X ray diffraction
Sulfur
Heat resistance
Diffraction patterns
Stretching
Differential scanning calorimetry
Thermodynamic stability
Ethanol
Carbon
Decomposition
Degradation
Temperature
Acids

ASJC Scopus subject areas

  • General

Cite this

Sintesis dan sifat termal natrium kanji sulfat dioscorea pentaphylla. / Sharlina, M. S.Elmi; Mat Lazim, Mohamad Azwani Shah; Wan Ahmad, Wan Yaacob.

In: Sains Malaysiana, Vol. 46, No. 9, 01.09.2017, p. 1549-1555.

Research output: Contribution to journalArticle

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