期刊
CARBOHYDRATE POLYMERS
卷 82, 期 2, 页码 256-263出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.04.032
关键词
Thermoplastic starch; Ionic liquids; Interactions; Mechanical properties; Plasticization; Electrical conductivity
Thermoplastic starch (TPS) plasticized by 1-butyl-3-methylimidazolium chloride ([BMIM]CI) was obtained by melt processing. The resulting electrically conductive TPS samples were less hygroscopic than glycerol plasticized TPS samples. Despite this lower water uptake, [BMIM]CI seems to be intrinsically a more efficient plasticizer of starch. [BMIM]CI plasticized TPS samples show a much higher elongation at break in the rubbery state than the glycerol plasticized TPS samples. Their unusually low rubbery Young's modulus for thermoplastic starch (0.5 MPa) suggests a strong reduction of hydrogen bonds between the starch chains due to the presence of the ionic liquid. A detailed IR spectroscopy analysis supports this interpretation. (C) 2010 Elsevier Ltd. All rights reserved.
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