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Synthesis and properties of non-isocyanate aliphatic thermoplastic polyurethane elastomers with polycaprolactone soft segments

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Abstract

This study describes a non-isocyanate route for synthesis of aliphatic thermoplastic polyurethane elastomers (TPUEs) with excellent mechanical properties. Melt transurethane co-polycondensation of bis(hydroxyethyl) hexanediurethane with different polycaprolactone-diols was conducted at 170 °C under a reduced pressure of 3 mmHg to prepare a series of TPUEs. The TPUEs were characterized by gel permeation chromatography, FT-IR, 1H–NMR, wide angle X-ray scattering, DSC, TGA, dynamic mechanical analysis, atomic force microscopy, SEM, and tensile analyses. The TPUEs exhibited M n above 18,100 g/mol, T g of −35 to −11 °C, T m of up to 107 °C, initial decomposition temperature over 269 °C, tensile strength up to 32 MPa with a strain at break of 1119%, and resilience of 65% to 83%. TPUEs with good tensile strength and resilience were successfully prepared through a non-isocyanate route.

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Acknowledgements

The authors acknowledge the financial support from the National Natural Science Foundation of China (Grant Nos. 21244006).

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Authors and Affiliations

  1. Key Laboratory of Carbon Fiber and Functional Polymers, Beijing University of Chemical Technology, Ministry of Education, Beijing, 100029, China

    Xiaokai Yuan, Zhihui Sang, Jingbo Zhao, Zhiyuan Zhang, Junying Zhang & Jue Cheng

  2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China

    Xiaokai Yuan, Zhihui Sang, Jingbo Zhao, Zhiyuan Zhang, Junying Zhang & Jue Cheng

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  1. Xiaokai Yuan
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  2. Zhihui Sang
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  3. Jingbo Zhao
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  4. Zhiyuan Zhang
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  5. Junying Zhang
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  6. Jue Cheng
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Correspondence to Jingbo Zhao.

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Yuan, X., Sang, Z., Zhao, J. et al. Synthesis and properties of non-isocyanate aliphatic thermoplastic polyurethane elastomers with polycaprolactone soft segments. J Polym Res 24, 88 (2017). https://doi.org/10.1007/s10965-017-1249-9

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  • DOI: https://doi.org/10.1007/s10965-017-1249-9

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