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Thermoplastic starch composites with TiO2particles: Preparation, morphology, rheology and mechanical properties
A. Ostafińska, J. Mikešová, S. Krejčíková, M. Nevoralová, A. Šturcová, A. Zhigunov, D. Michálková, M. Šlouf,
Language English Country Netherlands
Document type Journal Article
- MeSH
- Mechanical Phenomena * MeSH
- Plastics chemistry MeSH
- Rheology * MeSH
- Starch chemistry MeSH
- Temperature * MeSH
- Titanium chemistry MeSH
- Publication type
- Journal Article MeSH
Composites of thermoplastic starch (TPS) with titanium dioxide particles (mTiO2; average size 0.1μm) with very homogeneous matrix and well-dispersed filler were prepared by a two-step method, including solution casting (SC) followed by melt mixing (MM). Light and scanning electron microscopy confirmed that only the two-step procedure (SC+MM) resulted in ideally homogeneous TPS/mTiO2systems. The composites prepared by single-step MM contained non-plasticized starch granules and the composites prepared by single-step SC suffered from mTiO2agglomeration. Dynamic mechanical measurements showed an increase modulus with increasing filler concentration. In TPS containing 3wt.% of mTiO2the stiffness was enhanced by >40%. Further experiments revealed that the recommended addition of chitosan or the exchange of mTiO2for anisometric titanate nanotubes with high aspect ratio did not improve the properties of the composites.
References provided by Crossref.org
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- $a Composites of thermoplastic starch (TPS) with titanium dioxide particles (mTiO2; average size 0.1μm) with very homogeneous matrix and well-dispersed filler were prepared by a two-step method, including solution casting (SC) followed by melt mixing (MM). Light and scanning electron microscopy confirmed that only the two-step procedure (SC+MM) resulted in ideally homogeneous TPS/mTiO2systems. The composites prepared by single-step MM contained non-plasticized starch granules and the composites prepared by single-step SC suffered from mTiO2agglomeration. Dynamic mechanical measurements showed an increase modulus with increasing filler concentration. In TPS containing 3wt.% of mTiO2the stiffness was enhanced by >40%. Further experiments revealed that the recommended addition of chitosan or the exchange of mTiO2for anisometric titanate nanotubes with high aspect ratio did not improve the properties of the composites.
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