THE EFFECT OF GLYCEROL CONTENT ON MECHANICAL PROPERTIES, SURFACE MORPHOLOGY AND WATER ABSORPTION OF THERMOPLASTIC FILMS FROM TACCA LEONTOPETALOIDES STARCH

Authors

  • Ainatul Mardhiah Mohd Amin Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
  • Suhaila Mohd Sauid Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
  • Mohibah Musa Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
  • Ku Halim Ku Hamid Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia

DOI:

https://doi.org/10.11113/jt.v79.11327

Keywords:

Tacca leontopetaloides, glycerol, starch, casting, thermoplastic

Abstract

Tacca leontopetaloides is a new plant source of starch and has high potential to produce film of thermoplastic. In this study, thermoplastic starch (TPS) derived from T.leontopetaloides was developed with glycerol as plasticizer through casting method at temperature range from 85 °C to 90 °C and enhanced with sulphur vulcanization method. It was found that the addition of 5%, 10%, 15%, 20% and 25% (v/v) of glycerol into T.leontopetaloides starch had affected the mechanical properties, surface morphology, and water absorption of the thermoplastic films. In the mechanical properties study, the TPS films have the highest tensile strength (47.96 MPa) at 5% glycerol content in the formulation. Conversely, the TPS films have increasing value of elongation at break (EAB) with increasing glycerol concentration with the higher EAB obtained at 25% glycerol content (52.90%). The morphology of thermoplastic film was examined by using Scanning Electron Microscopy (SEM). As glycerol content increased, thermoplastic films showed smoother surface, homogenous and good distribution. In water absorption test, TPS films showed lower affinity to water absorption at lower glycerol content. The weight of the TPS films increased ranging from 80.3% to 107.4% after 12 hour of immersion in water. It can be concluded that, glycerol significantly affected the properties of TPS film within the range of glycerol concentration studied.

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Published

2017-07-19

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Section

Science and Engineering

How to Cite

THE EFFECT OF GLYCEROL CONTENT ON MECHANICAL PROPERTIES, SURFACE MORPHOLOGY AND WATER ABSORPTION OF THERMOPLASTIC FILMS FROM TACCA LEONTOPETALOIDES STARCH. (2017). Jurnal Teknologi, 79(5-3). https://doi.org/10.11113/jt.v79.11327