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Polymers
Volume 16
Issue 7
10.3390/polym16070993
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Article

Synthesis, Structure and Properties of Polyester Polyureas via a Non-Isocyanate Route with Good Combined Properties

by
Liuchun Zheng
1,2,3,*,
Qiqi Xie
2,
Guangjun Hu
4,
Bing Wang
2,
Danqing Song
2,
Yunchuan Zhang
2 and
Yi Liu
2
1
School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China
2
School of Chemical Engineering and Technology, State Key Laboratory of Separation Membranes and Membrane Processes, Education Ministry Key Laboratory of Hollow Fiber Membrane Materials and Membrane Processes, Tiangong University, Tianjin 300387, China
3
Cangzhou Insititute of Tiangong University, Cangzhou 061000, China
4
Shenghong Advanced Materials Research Institute, Shanghai 201403, China
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(7), 993; https://doi.org/10.3390/polym16070993
Submission received: 8 March 2024 / Revised: 29 March 2024 / Accepted: 2 April 2024 / Published: 4 April 2024
(This article belongs to the Special Issue Emerging Smart Applications of Functional Polymeric Materials)
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Abstract

Polyureas have been widely applied in many fields, such as coatings, fibers, foams and dielectric materials. Traditionally, polyureas are prepared from isocyanates, which are highly toxic and harmful to humans and the environment. Synthesis of polyureas via non-isocyanate routes is green, environmentally friendly and sustainable. However, the application of non-isocyanate polyureas is quite restrained due to their brittleness as the result of the lack of a soft segment in their molecular blocks. To address this issue, we have prepared polyester polyureas via an isocyanate-free route and introduced polyester-based soft segments to improve their toughness and endow high impact resistance to the polyureas. In this paper, the soft segments of polyureas were synthesized by the esterification and polycondensation of dodecanedioic acid and 1,4-butanediol. Hard segments of polyureas were synthesized by melt polycondensation of urea and 1,10-diaminodecane without a catalyst or high pressure. A series of polyester polyureas were synthesized by the polycondensation of the soft and hard segments. These synthesized polyester-type polyureas exhibit excellent mechanical and thermal properties. Therefore, they have high potential to substitute traditional polyureas.
Keywords: non-isocyanate; polyurea; polyester; soft segment; impact resistance non-isocyanate; polyurea; polyester; soft segment; impact resistance
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MDPI and ACS Style

Zheng, L.; Xie, Q.; Hu, G.; Wang, B.; Song, D.; Zhang, Y.; Liu, Y. Synthesis, Structure and Properties of Polyester Polyureas via a Non-Isocyanate Route with Good Combined Properties. Polymers 2024, 16, 993. https://doi.org/10.3390/polym16070993

AMA Style

Zheng L, Xie Q, Hu G, Wang B, Song D, Zhang Y, Liu Y. Synthesis, Structure and Properties of Polyester Polyureas via a Non-Isocyanate Route with Good Combined Properties. Polymers. 2024; 16(7):993. https://doi.org/10.3390/polym16070993

Chicago/Turabian Style

Zheng, Liuchun, Qiqi Xie, Guangjun Hu, Bing Wang, Danqing Song, Yunchuan Zhang, and Yi Liu. 2024. "Synthesis, Structure and Properties of Polyester Polyureas via a Non-Isocyanate Route with Good Combined Properties" Polymers 16, no. 7: 993. https://doi.org/10.3390/polym16070993

APA Style

Zheng, L., Xie, Q., Hu, G., Wang, B., Song, D., Zhang, Y., & Liu, Y. (2024). Synthesis, Structure and Properties of Polyester Polyureas via a Non-Isocyanate Route with Good Combined Properties. Polymers, 16(7), 993. https://doi.org/10.3390/polym16070993

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