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Synthesis, characterization and degradation behavior of thermoplastic polyurethane from hydroxylated hemp seed oil

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Abstract

Thermoplastic polyurethane based on renewable resource was synthesized from hydroxylated hemp seed oil. Before hydroxylation, the cold-pressed hemp seed oil was initially epoxidized and then hydroxylated in the presence of catalyst using water, ethanol and butanol. The hydroxylated hemp seed oil was used along with 1,1′-methanediylbis(4-isocyanatobenzene), linear polyester diol from caprolactone monomer (CAPA 2200), and chain extender from resorcinol-based aromatic diol (HER™) to prepare seven different polyurethane elastomers. The structural changes in the modified oils and in the newly synthesized TPUs were characterized using FTIR. Similarly, the structural changes during the TPU polymerization at isothermal temperature were monitored by real-time FTIR. The thermal stabilities and the degradation behavior of the synthesized TPUs were investigated using TG and TG-FTIR studies. The presence of hydroxylated hemp seed oil in the TPU structure has decreased the thermal stabilities and also altered the degradation mechanism.

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Acknowledgements

The authors wish to express their sincere thanks to the Management and Principal of the Kamaraj college of Engg. and Tech., K. Vellakulam Post—625701 for their support. Also the authors would like to thank Mr. Herfried Lammer, Area manager, Wood Carinthian Competence Centre, St. Veit an der Glan, Austria, and other faculty members of the organization.

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Authors and Affiliations

  1. Department of Polymer Technology, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam, 625701, Tamilnadu, India

    Rajendran Surender & Chinnaswamy Thangavel Vijayakumar

  2. Department of Chemistry, Nadar Saraswathi College of Engineering and Technology, Vadapudupatti, Theni, 625531, Tamilnadu, India

    Rajendran Surender

  3. Wood Carinthian Competence Centre, Kompetenzzentrum Holz GmbH, Klagenfurter strasse 87–89, 9300, Sankt Veit an der Glan, Austria

    Arunjunai Raj Mahendran & Günter Wuzella

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  1. Rajendran Surender
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  2. Arunjunai Raj Mahendran
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  3. Günter Wuzella
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  4. Chinnaswamy Thangavel Vijayakumar
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Correspondence to Arunjunai Raj Mahendran.

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Surender, R., Mahendran, A.R., Wuzella, G. et al. Synthesis, characterization and degradation behavior of thermoplastic polyurethane from hydroxylated hemp seed oil. J Therm Anal Calorim 123, 525–533 (2016). https://doi.org/10.1007/s10973-015-4856-x

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  • DOI: https://doi.org/10.1007/s10973-015-4856-x

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