A Preliminary Study on the Preparation of Environmentally Friendly Materials from Modified Glutinous Starch

Authors

  • Vimolvan PIMPAN Department of Materials Science, Faculty of Science, Chulalongkorn University
  • Ratjana SIRISOOK Department of Materials Science, Faculty of Science, Chulalongkorn University
  • Somporn RUNGSUMPUNKUL Department of Materials Science, Faculty of Science, Chulalongkorn University
  • Supitchaya Cheunchon Department of Materials Science, Faculty of Science, Chulalongkorn University

Keywords:

glutinous starch, modification, biodegradable

Abstract

Modified glutinous starch was prepared from the reaction between glutinous starch and maleic anhydride using sodium hydroxide as a catalyst and water as a solvent at 50oC. The modification conditions with respect to the amounts of maleic anhydride were 5%, 15%, 25%, 35%, 50%, 65%, 75% and 85% and to the reaction times were 30, 60, 90 and 120 minutes. After the reaction finished, the obtained products were neutralized by adding hydrochloric acid solution and the chemical structures of the modified glutinous starches were determined by FT-IR spectroscopy. The sheet samples were prepared from modified starches by casting and their characteristics including drying time, moisture absorption ability and tensile properties were investigated. It was found that both the amount of maleic anhydride and the reaction time affected the characteristics of the obtained sheets. Suitable modification conditions which result in the sheet sample exhibiting better overall characteristics than those prepared with other conditions was at 35% of maleic anhydride and a reaction time of 30 minutes.

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References

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Published

2022-08-21

How to Cite

[1]
V. PIMPAN, R. SIRISOOK, S. RUNGSUMPUNKUL, and S. Cheunchon, “A Preliminary Study on the Preparation of Environmentally Friendly Materials from Modified Glutinous Starch”, J Met Mater Miner, vol. 12, no. 2, pp. 59–65, Aug. 2022.

Issue

Vol. 12 No. 2 (2003)

Section

Original Research Articles

License

Copyright (c) 2003 The Journal of Metals, Materials and Minerals (JMMM)

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