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A Thermoplastic Polyurethane /Nanosilica Composite via Melt Mixing Process and its Properties

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Abstract

This investigation reports the preparation and properties of thermoplastic polyurethane/silica nanocomposite prepared via melt mixing process. In this case, nanosilica at different loading was mixed with a polyester-based thermoplastic polyurethane (TPU). The dispersion of nanofiller was studied by the SEM and TEM analyses. The nanocomposite with optimal dispersion of nanofiller has better filler-polymer interaction that has been confirmed by the FT-IR study. TPU with 1 phr of nanosilica loading showed better tensile properties. DSC study revealed that incorporation of fumed silica in the TPU matrix does not substantially affect the refinement of TPU crystallite, and thus resulted in an insignificant change in glass transition temperature (Tg) and crystalline melting temperature of the nanocomposite. TGA study also confirmed enhanced onset degradation temperature and maximum degradation temperature (Tmax) for optimal nanosilica composite. The final degradation temperature and char content also increased with an increase in fumed silica content. Water contact angle (WCA) study revealed that hydrophilicity of the nanocomposite increased with the incorporation of fumed silica.

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Acknowledgments

Chinmoy Saha is thankful to BHAVINI for the necessary permission to work in this program. The author is also thankful to Shri. Rajesh De, RTC, IIT Kharagpur for his valuable support. The author is grateful to Central Research Facility (CRF), IIT Kharagpur to provide essential facilities for the characterization of samples.

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Authors and Affiliations

  1. Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, India

    Chinmoy Saha, Prasanta K. Bahera, Sagar Kumar Raut & Nikhil K. Singha

  2. Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI), Kalpakkam, 603102, India

    Chinmoy Saha

  3. School of Nanoscience and Nanotechnology, Indian Institute of Technology, Kharagpur, 721302, India

    Nikhil K. Singha

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  1. Chinmoy Saha
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Correspondence to Nikhil K. Singha.

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Saha, C., Bahera, P.K., Raut, S.K. et al. A Thermoplastic Polyurethane /Nanosilica Composite via Melt Mixing Process and its Properties. Silicon 13, 1041–1049 (2021). https://doi.org/10.1007/s12633-020-00487-1

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