Abstract
The effect of thermoplastic polyurethane (TPU) on morphological and rheological properties of polyacetal/acrylonitrile-butadiene-styrene (POM/ABS) blends has been investigated. The morphological investigations revealed that addition of TPU to the blends improves the dispersion of dispersed phase, regardless of the dominant phase. In the POM rich phase blend, this effect was more significant and morphology changed from non-uniform to droplet-matrix. The rheological studies showed that complex viscosity as well as elasticity, increased by adding TPU to the POM/ABS blends. This improvement in rheological properties was more significant in the POM rich phase blend, which was proved by positively deviating blends (PDB) in the complex viscosity curve in the entire range of frequency obtained from the log-additivity rule. Such a phenomenon could have occurred due to partial miscibility of TPU with POM and placement of TPU at the interface and/or in POM phase. Transmission electron microscopy (TEM) micrographs showed that addition of Cloisite 30B nanoclay into the blend creates both intercalated and tactoids morphology. X-ray powder diffraction (XRD) analysis also confirmed the presence of two different types of nanoclay dispersion. TEM results also demonstrated that nanoclay particles morphology was intercalated and was located in the ABS phase as well as phase interfaces.
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Hosseinabadi, M., Ghetmiri, M., Dindarloo, A.S. et al. Polyacetal/Acrylonitrile-Butadiene-Styrene/Thermoplastic Polyurethane Blends and Their Nanocomposites Morphological and Rheological Behavior as a Tertiary Blend. Polym. Sci. Ser. A 60, 816–827 (2018). https://doi.org/10.1134/S0965545X18070039
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DOI: https://doi.org/10.1134/S0965545X18070039