Preparation and Properties of Starch-based Film Using N-(1,3-Dihydroxy-2-Methylpropan-2-yl) Formamide as a New Plasticizer

By : Jianmei Chen , Hongguang Dai , Xianliang Sheng , Lirong Wang , Naren Liu , Liping An , Bing Liang

Page No: 263-273

Abstract
N-(1,3-dihydroxy-2-methylpropan-2-yl)formamide (HMF) was used as a new plasticizer for corn starch to prepare thermoplastic starch film (SF). Scanning electron microscopy (SEM), shows that corn starch granules are completely disrupted and homogeneous material is obtained. The crystallinity of corn starch and HMF-plasticized starch film (HSF) was characterized by X-ray diffraction (XRD). The glass transition temperatures (Tg) of glycerol-plasticized starch film (GSF) and HSF were investigated by differential scanning calorimetry (DSC). The elongation at break of HSF is higher than that of GSF, but the tensile strength of HSF is inferior to that of GSF at relative humidity (RH) 75%. At RH 75%, the water resistance of HSF is superior to that of GSF, under the same conditions. The water vapor permeability of HSF is lower than that of GSF, as HMF is more hydrophobic than glycerol.

Authors :
Jianmei Chen, Hongguang Dai, Xianliang Sheng, Lirong Wang, Naren Liu, Liping An and Bing Liang :  College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, P. R. China?