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Thermomechanical behavior of nanoclay filled TPU/PP blends

Publication Type : Journal Article

Thematic Areas : Advanced Materials and Green Technologies

Publisher : E-Polymers

Source : E-Polymers (2008)

Url :

Keywords : Abrasion resistances, absorption, Blend systems, Blending, Clay minerals, Cloisite, Compatibilization, Compatibilizers, Diffraction, Esterification, Esters, Ethers, Functionalized, GREAT-ER, Hard segments, Maleic anhydride, Maleic anhydride grafted polypropylenes, Mechanical properties, Melt blending, Modified montmorillonites, nanoclay, Nanocomposites, Nanostructured materials, Organic compounds, Organoclay, Plastic products, Polymer blends, Polymer matrix composites, Polymers, Polypropylenes, Pumping plants, Reinforcement, Silicate minerals, Surface modifiers, Thermo-mechanical behaviors, Thermoplastic polyurethanes, Thermoplastics, water absorption, X ray analysis, X ray diffraction, X-ray diffractions

Campus : Coimbatore

School : School of Engineering

Center : Center for Excellence in Advanced Materials and Green Technologies

Department : Chemical, Civil

Year : 2008

Abstract : Both ester- and ether- based thermoplastic polyurethane (TPU) nanocomposites were prepared by melt blending, using 3 wt % Cloisite 10A (organically modified montmorillonite clay) as the nano scale reinforcement. 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 nano/PP, 70/25/5-TPU nano/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. X-ray diffraction studies revealed that compatibilization is further improved by introducing functionalized PP (MA-g-PP) in the organoclay containing blends. The blend system was evaluated by DSC, DMA, SEM, mechanical properties and X-ray diffraction. The results indicate that the ester- TPU exhibited greater miscibility than ether-TPU. Abrasion resistance and water absorption were also better for compatibilised ester- TPU blends as compared to the ether-TPU materials.

Cite this Research Publication : Dr. Kannan M., Bhagawan, S. Sa, Joseph, Kb, and Thomas, Sc, “Thermomechanical behavior of nanoclay filled TPU/PP blends”, E-Polymers, 2008.

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