Enhancing Material Properties of Recycled Glass Fibres Through Sizing

The EMPHASIZING project investigates and demonstrates circular economy solutions for recycling and upcycling glass fibre composites from wind turbine blades to automotive parts. The project aims to reclaim high-quality fibres and reintroduce them into the automotive sector as advanced, sustainable materials.


Our project

Composite materials such as glass fibre reinforced plastics (GFRPs) are widely used in energy, automotive, marine, and infrastructure sectors due to their strength, lightweight properties, and durability. However, their end-of-life (EoL) disposal poses a significant environmental challenge. Each year, Europe produces over one million tonnes of GFRP, much of which ends up in landfill or is incinerated.

The decommissioning of thousands of tonnes of wind turbine blades in the coming years will worsen the problem, adding to the environmental burden and undermining sustainability targets. Current recycling methods are costly, environmentally damaging, or result in low-value outputs.

There is therefore an urgent need for scalable, environmentally friendly recycling solutions that not only reclaim fibres but also upcycle them into advanced materials suitable for reuse in high-value sectors such as automotive manufacturing.


Research impact

EMPHASIZING is pioneering innovative methods to reclaim and upcycle glass fibres from EoL composites using the DEECOM® pressolysis process. This technology enables the clean reclamation of fibres free from residues, preserving their integrity and allowing them to be re-sized and compounded for enhanced performance.

Project objectives include:

  • Developing, testing, and optimising the EMPHASIZING recycling system for wind and maritime composites.
  • Producing upcycled, resized glass fibres with improved mechanical properties.
  • Demonstrating automotive components manufactured with reclaimed fibres.
  • Establishing a viable value chain for the exploitation of reclaimed GRPs.
  • Conducting impact and life cycle assessment (LCA) to validate environmental and economic viability.
  • Working on developing standards for GRP recycling and upcycling.

EMPHASIZING will enable a shift toward sustainable composite use by:

Automotive sector: Introducing reclaimed fibres into mainstream vehicle manufacturing, proving composites can be both sustainable and cost-effective.

Renewable energy: Providing recycling pathways for decommissioned wind blades, reducing landfill and incineration.

Policy and standards bodies: Offering validated processes that inform future recycling standards.

Society: Lowering environmental impact by eradicating harmful chemicals, reducing CO₂ emissions, and diverting composites from landfill.

The EMPHASIZING project will directly support industries and society by transforming how end-of-life glass fibre composites are managed.

For the automotive sector: EMPHASIZING will provide access to a reliable stream of upcycled, high-quality glass fibres that can be reintroduced into car part production. This reduces dependency on virgin materials, cuts costs, and accelerates the shift to lightweight, sustainable vehicles.

For renewable energy sectors: By creating viable recycling pathways for decommissioned wind blade composites, the project prevents thousands of tonnes of waste from being landfilled or incinerated.

For policy makers and standards bodies: EMPHASIZING will establish validated processes that can underpin future recycling standards, ensuring industry-wide adoption of sustainable practices.

For society at large: The project reduces environmental impact by diverting composites from landfill, eliminating the need for harmful recycling chemicals, and cutting CO₂ emissions from incineration.

In practice, EMPHASIZING’s outcomes will enable a circular economy for composites, ensuring that valuable glass fibre materials are not wasted but instead recirculated into high-value applications. The first applications will be in automotive manufacturing, with wider potential in transport, energy, and infrastructure sectors globally.


Brunel Composites Centre' Role

Brunel Composites Centre (BCC) contributes to fibre analysis, process optimisation, LCA, and validation of reclaimed composites for reuse in automotive applications. BCC’s expertise ensures materials meet industrial standards while supporting the integration of reclaimed composites into future production lines.


Project partners

  • B&M Longworth Ltd 
  • Gestamp UK
  • GEN2PLANK Limited
  • TWI Ltd
  • Ford Technologies Limited
  • EMS UK Limited
  • Brunel University London (Brunel Composites Centre)

Meet the Principal Investigator(s) for the project

Dr Mihalis Kazilas
Dr Mihalis Kazilas - Dr Mihalis Kazilas is the Director of the Brunel Composites Centre. He has more than 20 years of experience in the composites processing area. He received his PhD in Advanced Materials from Cranfield University back in 2003. His main field of expertise are polymers characterisation and polymer composites manufacturing and joining processes. He is author of several refereed scientific publications in the area of advanced composites manufacturing and process optimisation. Mihalis is a creative thinker who enjoys problem solving and able to work with different stakeholders to achieve the optimum results in both technical and managerial environments. Work experience: Sep 2019 – present: Business Group Manager, Polymer and Composite Technologies, TWI, UK June 2019 – present: Director of the Non-Metallics Innovation Centre, a joint initiative between TWI, Saudi Aramco and ADNOC Oct 2016 – present: Centre Director, Brunel Composites Innovation Centre, Brunel University London, UK Feb 2012 – 2019: Section Manager, Adhesives, Composites and Sealants (ACS) section within the Joining Process Group at TWI, UK May 2006 – Jan 2012: R&D Consultant, Project Engineer, Collaborative Projects Operations Manager at INASCO, Greece
Dr Nithin Jayasree
Dr Nithin Jayasree - Head of BCC / Research Reader Lead research on non-metallics, composites, and multiphysics modelling, with focus on structural integrity, sustainability, hydrogen economy (storage and infrastructure), CCUS applications, and advanced manufacturing for defence, aerospace, energy, and automotive sectors.

Related Research Group(s)

bcc-gp

Brunel Composites Centre - Shared research and technology capabilities, specialising in novel composites processing and joining technologies applied to industrial environments.


Partnering with confidence

Organisations interested in our research can partner with us with confidence backed by an external and independent benchmark: The Knowledge Exchange Framework. Read more.


Project last modified 15/09/2025