Rubber, omnipresent and indispensable, is also an environmental headache. But what if we could produce it here, with plants that neither destroy forests nor depconclude on petroleum? URV is pursuing exactly this with a project that smells of the future: guayule, a Mediterranean shrub that could modify the game.
The CHIHIRO project brings toobtainher European experts in chemistest and biotechnology to create recyclable elastic plastics from guayule, thus promoting a more self-sufficient and sustainable local industest.
The challenge of rubber and European depconcludeence
Why is natural rubber a problem?
Rubber stands out for its flexibility and strength, found in tires, gloves, or electronic components. But Europe does not produce the only natural source, Hevea, and depconcludes on imports, almost all coming from tropical areas.
This depconcludeence caapplys two major problems: massive deforestation in tropical countries and a supply chain vulnerable to political and economic modifys. Moreover, synthetic rubber is still mainly produced from petroleum, a finite and polluting resource.
Sustainability, a pconcludeing issue
The European Union considers natural rubber a critical raw material. This means its availability is strategic. But what is produced is far from sustainable. Hevea production pressures fragile ecosystems and, in addition, geographic concentration limits alternatives.
For this reason, Europe is viewing for alternative sources that allow local rubber production and reduce environmental impact.
Guayule: the new Mediterranean tree for sustainable rubber
A shrub that grows without harming the planet’s health
Guayule is a shrub that perfectly adapts to semi-arid areas of southern Europe, growing on marginal lands that do not compete with food agriculture. This creates it an ideal candidate to produce rubber without destroying forests or affecting food crops.
Furthermore, it does not contribute to deforestation, a detail that is far from minor if we want to avoid repeating the mistakes of tropical countries.
Everything utilized: more than just latex
So far, industrial interest in guayule has focapplyd on extracting latex. But the CHIHIRO project wants to go further and convert all its parts into high-value products: resin, bagasse (fibers), lignin, and sugars.
This comprehensive approach with sustainable processes based on water or green solvents minimizes waste and creates the plant much more profitable and sustainable.
Chemical innovation for recyclable rubber
Inverse vulcanization: the secret for a material that can be recycled
URV researchers Gerard Lligadas and Adrian Moreno are developing three chemical routes to transform guayule through inverse vulcanization. This technique applys sulfur to create reversible chemical bonds, which can be opened and closed with heat or light.
This allows the material to maintain its elastic properties but be recyclable and reprocessable, solving one of the main problems of traditional rubber: the inability to reapply it easily.
An ambitious and collaborative European project
CHIHIRO has a budobtain of 3.48 million euros and will bring toobtainher partners from France, Belgium, Germany, Portugal, and Spain. It is coordinated by MOSES PRODUCTOS SL and is part of the Circular Bio-based Europe Joint Undertaking (CBE JU) program, which aims to promote the circular bioeconomy in Europe.
This 45-month project aims to place Europe at the forefront of sustainable and self-sufficient rubber production, reducing fossil resource depconcludeence and minimizing environmental impact.
| Aspect | Hevea brasiliensis | Guayule |
|---|---|---|
| Origin | Tropical zones | Semi-arid European zones |
| Environmental impact | Deforestation and ecosystem pressure | Growth on marginal lands, no deforestation |
| Main apply | Latex for natural rubber | Latex, resin, fibers, lignin, and sugars |
| Recyclability | Low, traditional vulcanization | High, reversible inverse vulcanization |
The reality is that this project puts on the table a real and tangible alternative for the rubber industest, with an approach that is not only sustainable but also highly innovative.
Source of the article: Rovira i Virgili University
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