In this study, thermoplastic starch was obtained by mixing chestnut starch (CS) with esterified chestnut starch (ERCS) at a mass ratio of 5∶2, formulating a solution with a mass fraction of 10%, and adding different amounts of the plasticizer 1,3-bis(hydroxymethyl)urea (DMU) for gelatinization preparation.The structure and morphology of thermoplastic starch with different components were characterized by Fourier transform infrared spectrum (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermal gravimetric analyzer (TG), and the best plasticizing effect was achieved at a DMU dosage of 25% of the total quality of starch with the strongest hydrogen bonding between the plasticizer and chestnut starch.It was prepared as a thermoplastic starch film, and the light transmittance, water resistance, mechanical properties, and degradation of the film were tested and analyzed.The light transmittance could reach up to 79.25%, the water absorption rate was significantly reduced, the tensile strength and the elongation at break were 4.41 MPa and 16.31%, respectively, and the stability was slightly improved.
LIU Weiqing
,
LI Luning
,
HU Na
,
TANG Erjun
,
YUAN Miao
,
XING Xuteng
. Preparation and thermoplastic properties of 1,3-bis (hydroxymethyl) urea plasticized chestnut starch[J]. Food and Fermentation Industries, 2025
, 51(20)
: 255
-261
.
DOI: 10.13995/j.cnki.11-1802/ts.041880
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