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Study of Morphological and Mechanical Properties of PBT/PTT Blends and Their Nanocomposites and Their Correlation

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Abstract

Impact modified PBT/PTT blends based nanocomposites having organoclay content varying from 2, 3 and 5 wt% were prepared using corotating twin-screw extruder. Organoclay (Cloisite 30B) was used as nanofiller. Ultra-low-density polyethylene-grafted glycidyl methacrylate (ULDPE-g-GMA) was used as an impact modifier to toughen the polymeric matrices. In all the prepared nanocomposites, the amount of impact modifier (ULDPE-g-GMA) remains constant, i.e., 2 wt%. Izod impact testing showed that only 2 wt% impact modifier (ULDPE-g-GMA) was enough to improve the notched Izod impact strength of the neat PBT and neat PTT by 85.6 and 98.6 %, respectively. It shows an excellent toughening of PBT and PTT with ULDPE- g-GMA rubber. It was further found that the incorporation of only 3 wt% organoclay significantly improved the tensile strength, tensile modulus values of PBT/PTT blends. The result of FEG-SEM indicated that nanocomposite with 3 wt% organoclay in PBT/PTT/2wt% ULDPE-g-GMA did not show phase separation. It showed that 3 wt% organoclay was homogeneously dispersed in impact modified PBT/PTT blends based nanocomposites. POM studies revealed that the well-defined spherulites are present in neat PBT and neat PTT when \(T_{\mathrm{c}}\) was 205 \({^{\circ }}\)C.

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Acknowledgements

The authors are grateful to ICT, Matunga, for their generous support for the compounding facility. The authors would like to thank DSM Engineering Plastics, Futura Polyesters Ltd. and Pluss Polymers, India, for kind donation of the PBT, PTT and the impact modifier (ULDPE-g-GMA). Authors are also very grateful to SAIF, IIT, Bombay, for FEG-SEM and XRD measurements. Authors would also like to thank Netaji Subhas Institute of Technology, University of Delhi, New Delhi, for financial support.

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Authors and Affiliations

  1. Department of Applied Sciences, Birla Institute of Technology, Offshore Campus, Ras Al Khaimah, UAE

    Ranjana Sharma

  2. School of Applied Sciences, Netaji Subhas Institute of Technology, University of Delhi, Dwarka, New Delhi, 110075, India

    Purnima Jain

  3. Bhaskaracharya College of Applied Sciences, University of Delhi, Sec-02, Dwarka, New Delhi, 110075, India

    Susmita Dey Sadhu

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Sharma, R., Jain, P. & Dey Sadhu, S. Study of Morphological and Mechanical Properties of PBT/PTT Blends and Their Nanocomposites and Their Correlation. Arab J Sci Eng 44, 1137–1150 (2019). https://doi.org/10.1007/s13369-018-3424-7

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