Thermoplastic starch plasticized by an ionic liquid

Thermoplastic starch plasticized by an ionic liquid

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 intrinsicall...

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Veröffentlicht in:Carbohydrate polymers 2010-09, Vol.82 (2), p.256-263
Hauptverfasser: Sankri, Abdulkader, Arhaliass, Abdellah, Dez, Isabelle, Gaumont, Annie Claude, Grohens, Yves, Lourdin, Denis, Pillin, Isabelle, Rolland-Sabaté, Agnès, Leroy, Eric
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Chemical Sciences
Electrical conductivity
Exact sciences and technology
Interactions
Ionic liquids
Mechanical properties
Natural polymers
Organic chemistry
Physicochemistry of polymers
Plasticization
Polymers
Starch and polysaccharides
Thermoplastic starch
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Beschreibung
Zusammenfassung: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.
ISSN:0144-8617
1879-1344
DOI:10.1016/j.carbpol.2010.04.032