Autonomic healable waterborne organic-inorganic polyurethane hybrids based on aromatic disulfide moieties

Aromatic disulfide dynamic structures were incorporated as chain extenders in waterborne organic-inorganic polyurethane hybrids in order to provide autonomic healable characteristics. The synthesis was carried out following the acetone process methodology and the influence of the introduction of the...

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Bibliographic Details
Published in:Express polymer letters 2017-04, Vol.11 (4), p.266-277
Main Authors: Aguirresarobe, R. H., Martin, L., Fernandez-Berridi, M. J., Irusta, L.
Format: Article
Language:English
Subjects:
Chemical bonds
Chemical synthesis
Crosslinking
Disulfide bonds
Fourier transforms
Healing
Influence
Metathesis
NMR
Nuclear magnetic resonance
Physical properties
Polymerization
Polymers
Polyurethane resins
Room temperature
Smart polymers
Spectrum analysis
Temperature
waterborne polyurethanes
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Summary:Aromatic disulfide dynamic structures were incorporated as chain extenders in waterborne organic-inorganic polyurethane hybrids in order to provide autonomic healable characteristics. The synthesis was carried out following the acetone process methodology and the influence of the introduction of the healing agents in the polymer dispersion stability was analyzed. After the crosslinking process at room temperature, organic-inorganic hybrid films, which presented autonomic healing characteristics, were obtained. These features were evaluated by means of stress-strain tests and the films showed repetitive healing abilities. Thus, the optimum healing time at room temperature (25 °C) as well as the influence of different parameters in the healing efficiency, such the aromatic disulfide concentration or the physical properties of the polymer matrix were analyzed.
ISSN:1788-618X
1788-618X
DOI:10.3144/expresspolymlett.2017.27