Preparation and properties of self-healing polyurethane without external stimulation

In this paper, a self-repairing polyurethane without external stimulation was synthesized. First, a reversible acyl hydrazone bond was introduced into the polyurethane molecular chain. The bond could be dynamically reversible under acidic stimulation to repair the material damage. After that, differ...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2022-12, Vol.79 (12), p.10723-10739
Main Authors: Chen, Yu, Shi, Chuanying, Zhang, Zhaoyang, Xu, Qi, Hu, Haiqing, Wei, Yanyan
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical bonds
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Equilibrium
Ethanol
Fourier transforms
Hydrazones
Molecular chains
Nitrogen
Organic Chemistry
Original Paper
Physical Chemistry
Polyethylene glycol
Polymer Sciences
Polyurethane resins
Reagents
Soft and Granular Matter
Stimulation
Tensile tests
Thermogravimetric analysis
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Summary:In this paper, a self-repairing polyurethane without external stimulation was synthesized. First, a reversible acyl hydrazone bond was introduced into the polyurethane molecular chain. The bond could be dynamically reversible under acidic stimulation to repair the material damage. After that, different contents of bis(2-ethylhexyl) phosphate components were added to modify the material in the synthesis, and its performance was compared to pure polyurethane (PU-0). The polymer was tested using digital viscometer, differential scanning calorimeter (DSC), thermogravimetric analysis (TG), tensile test, etc. The results showed that the addition of bis(2-ethylhexyl) phosphate can promote the healing of the material, so that the synthetic polyurethane material can be repaired to a certain extent without external stimulation.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-022-04075-8