Author:
Dr. Augusta Silva | CITEVE | Portugal
KEY MESSAGE
The be@t project develops innovative water-based textile bio-coatings and laminated materials using polyhydroxyalkanoates (PHAs) as sustainable alternatives to fossil-based polymers, integrating low-cost agricultural, agrifood, and industrial residues to enhance economic and environmental feasibility.
These bio-based coatings and flexible PHA films offer high-performance, multifunctional solutions for textiles, enabling eco-design, aesthetic versatility, and applications as leather alternatives or multi-layer laminated structures.
The resulting innovations demonstrate strong potential across diverse sectors, including fashion, sports, automotive, protective apparel, furniture, and home textiles, supporting circularity and sustainable resource valorisation.
ABSTRACT CONTENT
Polyhydroxyalkanoates (PHAs) are biodegradable and thermally stable biopolymers produced via bacterial fermentation, but their adoption has been limited by high production costs.
Using low-cost feedstocks, such as agricultural, agrifood, and industrial residues, has shown potential to improve their economic feasibility while valorising underused biomass.
The be@t project focuses on developing a new generation of water-based textile bio-coatings and laminated materials using PHAs as sustainable alternatives to fossil-based polymers.
This approach integrates eco-design, aesthetics, and functional properties to create versatile, high-performance products for technical and functional textile applications.
Innovations include flexible PHA-based textile coatings, coloured with bio-based and synthetic pigments, providing a sustainable alternative to leather.
The project also explored flexible PHA films for textile laminations with natural fibres, such as hemp, linen, and organic cotton, resulting in multi-layer functional and sustainable textile solutions.
Laboratory and pilot-scale development demonstrated stable processing behaviour, compatibility with textile substrates, and high mechanical and chemical performance.
The resulting materials exhibit durability, flexibility, and aesthetic quality, making them suitable for a wide range of applications.
Potential sectors include fashion, sports, automotive, protective apparel, home textiles, furniture decoration, footwear, and accessories.
These innovations highlight the potential of waste-derived PHAs to deliver circular, sustainable, and high-value textile solutions for emerging industrial needs.