WMG, at the University of Warwick, has launched its new sustainable elastomer research facility based in the International Institute for Nanocomposites Manufacturing (IINM).

High performance elastomers are essential components in applications across a range of critical sectors, most notably for vehicle tyres, but also for footwear, soft robotics and automation.

However, the high durability of conventional rubbers also results in them being extremely difficult to recycle at the end of their service life, with many simply being incinerated and buried in landfills. The need for new and sustainable elastomer technology is becoming more urgent as society transitions towards fully electric vehicles, which are currently heavier and can cause tyre wear up to 30% faster. Tyre wear emission is accumulated as the second largest microplastics pollution globally.

The main scientific focus of the new facility is to bring together state-of-the-art research from across rubber composite processing and synthetic polymer chemistry - including manufacturing technology, multiscale characterisation, and prototype sustainable rubber products.

Capabilities within the facility include a twin-roll mill for rubber compounding; automated compression moulding and moving die rheometer (MDR); abrasion testing; and a new dynamic rubber process analyser (RPA), which enables advanced analysis of rubber networks over a temperature range of -40 °C to 232 °C, and a wide frequency range, as well as unique rheological characterisation at large amplitude oscillatory shear (LAOS).

Within the IINM there is also a wet chemistry laboratory designed for new formulation development, and rubber and nanoparticle functionalisation, as well as polymer characterisation and testing laboratories to support sustainable elastomer research and development.

Dr Chaoying Wan, Reader of Functional Polymers and Nanocomposites at WMG, University of Warwick explains: “Our new RPA has the capacity of a wider temperature range - it is the only one in the UK, and one of only a few in the world. This function is extremely useful for evaluating elastomer materials as well as for advanced scientific analysis. With support from the High Value Manufacturing Catapult, we are excited to be furthering our research towards extending the functionality of rubber materials and making the products recyclable and sustainable at end-of-life.”

Projects currently underway in the new facility include integrating self-healing properties which result in improved safety and extended lifespan for tyres; stretchable sensors; and investigating other rubber products to enhance the durability of rubbers by the addition of nanofillers, including graphene, and recycling of rubbers for road and pavement uses.

Find out more about WMG’s Nanocomposites research here: Nanocomposites (warwick.ac.uk)

Contacts:

Dr Chaoying Wan – Rubber Chemistry and Dielectric Elastomer Technology

Professor Tony McNally - Composites of Elastomers and Nanomaterials