OZOCELL

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1. CETI

2. References

3. RE-APS

Valorising Oilseed Flax Straw into Low-Impact Cellulosic Fibres

The OZOCELL project aims to transform oilseed flax straw — an underutilised agricultural co-product — into low-environmental-impact cellulosic textile fibres through an innovative green chemistry process.

Supported by France 2030 – ADEME and labelled by Techtera, the project contributes to the emergence of a French value chain dedicated to sustainable textile fibres derived from biomass.

A greener alternative for the textile industry

The innovative ozone-based process developed within OZOCELL aims to significantly reduce:

• Chemical inputs

• Water consumption

• Environmental impact associated with conventional cellulosic fibre production

The process could therefore represent a major environmental improvement compared with traditional viscose routes.

By creating value from agricultural co-products, OZOCELL also contributes to:

• Additional revenue opportunities for farmers

• Reduced dependence on imported synthetic materials

• Development of local and resilient textile value chains

• Objectives

  Oilseed flax is primarily cultivated for its seeds, while the straw generated during cultivation remains largely underexploited. Rich in cellulose, lignin and hemicellulose, these co-products represent a significant biomass resource that can be valorised into advanced textile materials.

  The OZOCELL project aims to:

  • Extract cellulose from oilseed flax straw

  • Develop a low-impact transformation route based on ozone oxidation

  • Produce man-made cellulosic filaments and fibres

  • Create a more sustainable alternative to conventional viscose or Lyocell processes

  • Support circularity and bio-based textile development

  The project also targets applications in:

  • Sports textiles

  • Technical textiles

  • Food-contact and transport application

  CETI mobilises its industrial pilot platforms to transform extracted cellulose into textile filaments and fibres compatible with industrial applications.

  The project is fully aligned with CETI’s strategic mission to support:

  • Bio-based textile innovation

  • Circular textile development

  • Industrialisation of sustainable materials

• Partners

  Project leader:

  Linéa Semences de lin

  Partners:

  • CETI Transformative Textiles

  • Decathlon

  • UniLaSalle

  • Bretagne Pack

  CETI’s role in the project:

  Within the consortium, CETI contributes its expertise in:

  • Biomass valorisation

  • Dissolution and wet spinning processes

  • Fibre and filament development

  • Pilot-scale textile processing

  • Industrial transfer and scale-up

• Further information

  👉 Learn more about CETI’s developments in man-made fibres: Man-made Fibers

  👉 Discover CETI’s wet spinning platform

  👉 Discover ADEME’s documentation