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Chinese Journal of Polymer Science

, Volume 37, Issue 1, pp 43–51 | Cite as

Amorphous and Crystallizable Thermoplastic Polyureas Synthesized through a One-pot Non-isocyanate Route

  • Jia-Long Ban
  • Su-Qing Li
  • Chen-Feng Yi
  • Jing-Bo Zhao
  • Zhi-Yuan Zhang
  • Jun-Ying Zhang
Article
  • 35 Downloads

Abstract

A simple one-pot non-isocyanate route for synthesizing thermoplastic polyureas is presented. In situ urethanization was conducted from the ring-opening reaction of ethylene carbonate with poly(propylene glycol) bis(2-aminopropyl ether) and hexanediamine, m-xylylenediamine, or diethylene glycol bis(3-aminopropyl) ether at 100 °C for 6 h under normal pressure. Melt transurethane polycondensation was successively conducted at 170 °C under a reduced pressure of 399 Pa for different time periods. A series of nonisocyanate thermoplastic polyureas (NI-TPUreas) were prepared. The NI-TPUreas were characterized by gel permeation chromatography, FTIR, 1H-NMR, differential scanning calorimetry, thermogravimetric analysis, wide-angle X-ray diffraction, atomic force microscopy, and tensile test. NI-TPUreas exhibited Mn of up to 1.67 × 104 g/mol, initial decomposition temperature over 290 °C, and tensile strength of up to 32 MPa. Several crystallizable NI-TPUreas exhibited Tm exceeding 98 °C. NI-TPUreas with good thermal and mechanical properties were prepared through a green and simple one-pot non-isocyanate route.

Keywords

Non-isocyanate route Thermoplastic polyureas One-pot method Sustainable synthesis Transurethane polycondensation 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 21244006) and Beijing Natural Science Foundation (No. 2182056).

Supplementary material

10118_2018_2165_MOESM1_ESM.pdf (640 kb)
Amorphous and Crystallizable Thermoplastic Polyureas Synthesized through a One-pot Non-isocyanate Route

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Copyright information

© Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Jia-Long Ban
    • 1
  • Su-Qing Li
    • 1
  • Chen-Feng Yi
    • 1
  • Jing-Bo Zhao
    • 1
  • Zhi-Yuan Zhang
    • 1
  • Jun-Ying Zhang
    • 1
  1. 1.Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology), Ministry of EducationCollege of Materials Science and Engineering, Beijing University of Chemical TechnologyBeijingChina

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