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Preparation and Characterization of Nanoclay-filled Polyurethane/polypropylene Blends

Publication Type : Journal Article

Thematic Areas : Advanced Materials and Green Technologies

Publisher : Polymer Engineering Science

Source : Polymer Engineering & Science, Volume 50, Number 9, p.1878-1886 (2010)

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Campus : Coimbatore

School : School of Engineering

Center : Center for Excellence in Advanced Materials and Green Technologies

Department : Chemical

Year : 2010

Abstract : Abstract Ester-based thermoplastic polyurethane (TPU) nanocomposites were prepared by melt blending at 190°C, using 3 wt% Cloisite 10A (organically modified montmorillonite clay) as the nanoscale reinforcement [TPU(C10A)]. The nanocomposites were subsequently melt-blended with polypropylene (PP) using maleic anhydride–grafted polypropylene (MA-g-PP) as a compatibilizer [in the ratio of 70/30-TPU/PP, 70/25/5-TPU/PP/MA-g-PP, 70/25/5-TPU (C10A)/PP/MA-g-PP]. Besides giving substantial increase in modulus, tensile strength, and other properties, organoclay reinforcement functions as a surface modifier for TPU hard segment resulting in improved dispersion. The morphology and other characteristics of the nanocomposite blends were investigated in terms of X-ray diffraction, fourier transform infrared spectroscopy, differential scanning calorimetry, dynamic mechanical analysis, tensile properties, scanning electron microscopy, and atomic force microscopy. The results indicate that the ester-TPU(C10A)/PP/MA-g-PP exhibited better dispersion than other blend systems; abrasion resistance and water absorption resistance were also better for this system. POLYM. ENG. SCI., 50:1878–1886, 2010.

Cite this Research Publication : M. Kannan, Bhagawan, S. S., Jose, T., Sabu Thomas, and Kuruvilla Joseph, “Preparation and Characterization of Nanoclay-filled Polyurethane/polypropylene Blends”, Polymer Engineering & Science, vol. 50, pp. 1878-1886, 2010.

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