Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol
Recently, the use of natural polymer such as starch to produce packaging film has received much attention as a substitute for conventional petroleum-based packaging film since starch is biodegradable and sustainable. However, the poor characteristic of starch such as high brittleness will limit the...
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my.upm.eprints.813132021-06-13T13:19:01Z http://psasir.upm.edu.my/id/eprint/81313/ Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol Mohd Zahiruddin, Siti Mariam Othman, Siti Hajar Mohamed Amin Tawakkal, Intan Syafinaz A. Talib, Rosnita Recently, the use of natural polymer such as starch to produce packaging film has received much attention as a substitute for conventional petroleum-based packaging film since starch is biodegradable and sustainable. However, the poor characteristic of starch such as high brittleness will limit the application of the film. This problem can be solved by adding plasticizers. In this work, the effects of different types of plasticizers (glycerol, sorbitol and 1:1 mixture of glycerol-sorbitol) on mechanical and thermal properties of tapioca starch films prepared by solvent casting method were investigated. The films were characterized in term of mechanical (tensile strength (TS), elongation at break (EAB), Young Modulus (YM) and thermal properties (thermo-gravimetric analysis (TGA)). Film plasticized with sorbitol exhibited higher TS and YM but lower EAB value which contributed to higher thermal stability than glycerol-plasticized film. This was due to the strong interactions between the polymer chains resulting from the high molecular weight of sorbitol. Hence, films became more rigid and thus promoted to a greater thermal resistance. Rynnye Lyan Resources 2019-04 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81313/1/FILM.pdf Mohd Zahiruddin, Siti Mariam and Othman, Siti Hajar and Mohamed Amin Tawakkal, Intan Syafinaz and A. Talib, Rosnita (2019) Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol. Food Research, 3 (2). pp. 157-163. ISSN 2550-2166 https://www.myfoodresearch.com/vol-39474issue-2.html 10.26656/fr.2017.3(2).105 |
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Recently, the use of natural polymer such as starch to produce packaging film has received much attention as a substitute for conventional petroleum-based packaging film since starch is biodegradable and sustainable. However, the poor characteristic of starch such as high brittleness will limit the application of the film. This problem can be solved by adding plasticizers. In this work, the effects of different types of plasticizers (glycerol, sorbitol and 1:1 mixture of glycerol-sorbitol) on mechanical and thermal properties of tapioca starch films prepared by solvent casting method were investigated. The films were characterized in term of mechanical (tensile strength (TS), elongation at break (EAB), Young Modulus (YM) and thermal properties (thermo-gravimetric analysis (TGA)). Film plasticized with sorbitol exhibited higher TS and YM but lower EAB value which contributed to higher thermal stability than glycerol-plasticized film. This was due to the strong interactions between the polymer chains resulting from the high molecular weight of sorbitol. Hence, films became more rigid and thus promoted to a greater thermal resistance. |
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Article |
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Mohd Zahiruddin, Siti Mariam Othman, Siti Hajar Mohamed Amin Tawakkal, Intan Syafinaz A. Talib, Rosnita |
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Mohd Zahiruddin, Siti Mariam Othman, Siti Hajar Mohamed Amin Tawakkal, Intan Syafinaz A. Talib, Rosnita Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
author_facet |
Mohd Zahiruddin, Siti Mariam Othman, Siti Hajar Mohamed Amin Tawakkal, Intan Syafinaz A. Talib, Rosnita |
author_sort |
Mohd Zahiruddin, Siti Mariam |
title |
Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
title_short |
Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
title_full |
Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
title_fullStr |
Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
title_full_unstemmed |
Mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
title_sort |
mechanical and thermal properties of tapioca starch films plasticized with glycerol and sorbitol |
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Rynnye Lyan Resources |
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2019 |
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http://psasir.upm.edu.my/id/eprint/81313/1/FILM.pdf http://psasir.upm.edu.my/id/eprint/81313/ https://www.myfoodresearch.com/vol-39474issue-2.html |
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