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

doi:10.1007/s10118-018-2165-0

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

ARTICLE | Updated：2021-02-18

- Amorphous and Crystallizable Thermoplastic Polyureas Synthesized through a One-pot Non-isocyanate Route
- Chinese Journal of Polymer Science Vol. 37, Issue 1, Pages: 43-51(2019)
- Affiliations：
  
  Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology), Ministry of Education; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  zhaojb@mail.buct.edu.cn
- Funds：
- DOI：10.1007/s10118-018-2165-0
  CLC：
- Received：27 April 2018，
  
  Revised：2018-5-23，
  
  Accepted：28 May 2018，
  
  Online First：04 July 2018，
  
  Published：2019-01
- Accepted：
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Citation: Ban, J. L.; Li, S. Q.; Yi, C. F.; Zhao, J. B.; Zhang, Z. Y.; Zhang, J. Y. Amorphous and crystallizable thermoplastic polyureas synthesized through a one-pot non-isocyanate route. Chinese J. Polym. Sci. 2019, 37, 43–51

Jia-Long Ban, Su-Qing Li, Chen-Feng Yi, et al. Amorphous and Crystallizable Thermoplastic Polyureas Synthesized through a One-pot Non-isocyanate Route[J]. Chinese Journal of Polymer Science, 2019, 37(1): 43-51.
Citation: Ban, J. L.; Li, S. Q.; Yi, C. F.; Zhao, J. B.; Zhang, Z. Y.; Zhang, J. Y. Amorphous and crystallizable thermoplastic polyureas synthesized through a one-pot non-isocyanate route. Chinese J. Polym. Sci. 2019, 37, 43–51 DOI： 10.1007/s10118-018-2165-0.

Jia-Long Ban, Su-Qing Li, Chen-Feng Yi, et al. Amorphous and Crystallizable Thermoplastic Polyureas Synthesized through a One-pot Non-isocyanate Route[J]. Chinese Journal of Polymer Science, 2019, 37(1): 43-51. DOI： 10.1007/s10118-018-2165-0.

摘要

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

-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 non-isocyanate thermoplastic polyureas (NI-TPUreas) were prepared. The NI-TPUreas were characterized by gel permeation chromatography

FTIR

H-NMR

differential scanning calorimetry

thermogravimetric analysis

wide-angle X-ray diffraction

atomic force microscopy

and tensile test. NI-TPUreas exhibited

of up to 1.67 × 10

g/mol

initial decomposition temperature over 290 °C

and tensile strength of up to 32 MPa. Several crystallizable NI-TPUreas exhibited

exceeding 98 °C. NI-TPUreas with good thermal and mechanical properties were prepared through a green and simple one-pot non-isocyanate route.

关键词

Keywords

references

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