Thermoplastic starch plasticized by an ionic liquid
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- 作者：Abdulkader Sankri ; Abdellah Arhaliass ; Isabelle Dez ; Annie Claude Gaumont ; Yves Grohens ; Denis Lourdin ; Isabelle Pillin ; Agnè ; s Roll ; -Sabaté ; Eric Leroy
- 关键词：Thermoplastic starch ; Ionic liquids ; Interactions ; Mechanical properties ; Plasticization ; Electrical conductivity
- 刊名：Carbohydrate Polymers
- 出版年：2010
- 出版时间：5 September 2010
- 年：2010
- 卷：82
- 期：2
- 页码：256-263
- 全文大小：338 K
文摘
Thermoplastic starch (TPS) plasticized by 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) 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]Cl seems to be intrinsically a more efficient plasticizer of starch. [BMIM]Cl 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.