Formulation of self-crosslinkable hybrid acrylic/casein latex by tannic acid

The current environmental issues caused by the massive consumption of oil-based materials are boosting the efforts to develop novel eco-friendly and biodegradable materials. In this context, this work presents the preparation of waterborne latexes composed of hybrid casein/acrylate nanoparticles con...

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Bibliographic Details
Published in:Progress in organic coatings 2021-10, Vol.159, p.106413, Article 106413
Main Authors: Cencha, Luisa G., Allasia, Mariana, Passeggi, Mario C.G., Gugliotta, Luis M., Minari, Roque J.
Format: Article
Language:English
Subjects:
Biodegradability
Biodegradable materials
Casein
Crosslinking
Hybrid films
Latex
Nanoparticles
Natural phenolic cross linker
Phenols
Self-crosslinkable films
Tannic acid
Water resistance
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Summary:The current environmental issues caused by the massive consumption of oil-based materials are boosting the efforts to develop novel eco-friendly and biodegradable materials. In this context, this work presents the preparation of waterborne latexes composed of hybrid casein/acrylate nanoparticles containing tannic acid, a plant-derived phenolic compound, which is proposed as cross linker agent during film formation. In this way, self-crosslinkable formulations containing variable amounts of cross linker were prepared. This proposal allows extending the properties of hybrid casein/acrylate films by improving their water resistance, without degrading their mechanical strength, and providing them excellent UV-blocking properties. These results show that a latex with a high bio-content, as hybrid casein/acrylate one, in combination with a plant-derived phenolic compound as cross linker could pave the way for producing self-crosslinkable formulations with potential to be applied as more eco-friendly films with improved biodegradability.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2021.106413