Study on the properties of ethylenebisformamide plasticized corn starch (EPTPS) with various original water contents of corn starch
2007
Yang, J.H. | Yu, J.G. | Feng, Y. | Ma, X.F.
EPTPSs were prepared based on various original water contents of corn starch (10%, 13%, 16% and 19%). The structure and mechanical performance of resulting TPSs were studied in detail. The hydrogen bond between plasticizer and starch was detected by FT-IR. By scanning electron microscope (SEM), native corn starch granules were proved to transfer to a continuous phase. The crystallinity and retrogradation of EPTPSs were studied by X-ray diffraction (XRD). The effect of water on the mechanical properties of EPTPSs was also tested. The effect of moisture content on the glass-rubber transition temperature (T(g)) was studied using dynamic thermal mechanical analysis (DMTA). It revealed that T(g) of EPTPS decreased with increasing moisture content.
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