Review article: Bio-based waterborne polyurethane

A new paper reviews the recent progress in the synthesis of bio-based waterborne polyurethane, and focuses on its applications in coatings, adhesives and antimicrobials.

With the consumption of traditional non-renewable petroleum-based materials, researchers are gradually realising the significance of utilising bio-based materials. Image source: FikMik - Fotolia (symbol image).

With the current decreasing fossil resources and increasing carbon dioxide emissions, researchers are increasingly concerned about the development and utilisation of biomass resources. The development of bio-based waterborne polyurethanes (BWPU) provides a new direction for the utilisation of biomass resources and the protection of the environment. BWPU has attracted much attention from academia and industry due to their good physical and chemical properties, no volatile organic compounds (VOCs) emissions, exploitation of renewable substances, and structural design-ability.

Coatings, adhesives and antimicrobials

BWPU typically includes the polymerisation of bio-based monomers, such as animal and vegetable oils, the addition of bio-based nanofillers, such as cellulose, lignin, and chitosan, and antimicrobial modifications, such silver nanoparticles and carvacrol, which can effectively replace traditional petroleum-based resources. At present, there are few reviews on the synthesis and applications of BWPU. Therefore, a new paper reviews the recent progress in the synthesis of BWPU, and focuses on its applications in coatings, adhesives and antimicrobials, which is expected to provide reference and summarise research priorities and issues.

The review has been published in Progress in Organic Coatings, Volume 186, January 2024.

Reading tip

The EC Tech Report Bio-based Coatings is a hand-picked compilation of all the key aspects concerning bio-based coatings, offering the latest technical developments. Leading R&D experts present their various binder developments, how binders can be produced sustainably and also how the performance of your coatings can be optimised. Exclusive market insights and data as well as an impressive package of digital bonus material round off this Tech Report.

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