Influence of Amphiphilic Plasticizer on Properties of Thermoplastic Starch Films |
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| Authors: | Israr Ahmed Arshad Hussain Zaib Jahan |
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| Affiliation: | School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad, Pakistan |
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| Abstract: | Thermoplastic starch powders and films were produced by using different combinations of hydrophilic (malic acid and water) and amphiphilic (isoleucine and butyric acid) plasticizers. Spray drying was used to produce thermoplastic starch powder followed by compression molding for the development of films. In all plasticized formulations, the rate of retrogradation was inhibited until the seventh day. The crystallinity and moisture sensitivity of the freshly prepared films were dependent on amphiphilic plasticizer quantity in formulation. Fourier transform infrared spectroscopy and thermogravimetric analysis showed an effective interaction of starch with isoleucine. Isoleucine formulated films showed the highest tensile strength, whereas malic acid-rich films showed better strain values. |
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| Keywords: | Amphiphilic mechanical properties plasticizer retrogradation thermoplastic starch |
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