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Synthesis and Properties of Fully Biobased Plastics from Biuret and Diamines

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Communication Open Access

Synthesis and Properties of Fully Biobased Plastics from Biuret and Diamines

Yuezong Chen 1 Bochao Pan 1 Donglin Tang 1,2,*
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1
Department of Polymer Materials Science Engineering, South China University of Technology, Guangzhou 510640, China
2
Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates (South China University of Technology), Guangzhou 510640, China
*
Authors to whom correspondence should be addressed.

Received: 04 January 2026 Revised: 05 February 2026 Accepted: 09 March 2026 Published: 19 March 2026

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© 2026 The authors. This is an open access article under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).

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Sustain. Polym. Energy 2026, 4(1), 10003; DOI: 10.70322/spe.2026.10003
ABSTRACT: In this work, fully biobased polybiurets (PBUs) were prepared from the polymerizations of biuret, a green and environmentally friendly chemical derived from urea, with 1,10-decanediamine and 1,6-hexanediamine. No solvent and no catalyst is needed in such polymerizations. Both biuret and urea functions can be observed in the obtained products. The PBUs possess higher glass transition temperature than the corresponding polyureas (~40 °C higher). The strength at break achieves as high as 77 MPa. The mechanical and thermal properties of the PBUs can be feasibly tuned by altering the proportions of the two diamines. It is provided in this work a new strategy in the construction of biobased polymers with high performance.
Keywords: Biobased; Polybiuret; Solvent-free; Catalyst-free

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