Characterization of layered silicate-reinforced blends of thermoplastic starch (TPS) and poly(butylene adipate-co-terephthalate)
| Autor: | József Karger-Kocsis, Anton A. Apostolov, László Lendvai |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science Thermoplastic Polymers and Plastics Starch Organic Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Montmorillonite chemistry Compounding Adipate Bentonite Materials Chemistry Extrusion Composite material 0210 nano-technology |
| Zdroj: | Carbohydrate polymers. 173 |
| ISSN: | 1879-1344 |
| Popis: | A two-step melt blending procedure was used to produce binary systems composed of thermoplastic starch (TPS) and poly(butylene adipate- co -terephthalate) (PBAT). To improve the properties of the blends, two different layered silicates, viz. bentonite (BT) and organically modified montmorillonite (oMMT) were incorporated. First, TPS and its layered silicate nanocomposites were prepared via extrusion compounding during which starch was plasticized with glycerol and water. In the second step, PBAT was added to TPS/layered silicate to produce blends in a batch-type mixer. Mechanical and thermal properties were determined. The blends showed acceptable ductility over 50 wt.% PBAT content, although at the cost of strength and stiffness. By contrast to oMMT the BT became intercalated in TPS and TPS/PBAT blends. The reinforcing effect of BT and oMMT was most prominent for the glassy states of both TPS and TPS/PBAT blends. Thermal, and thermooxidative properties were not significantly affected by the presence of layered silicates. |
| Databáze: | OpenAIRE |
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