Life Cycle Assessment Validates DuPont™ Sorona® Sustainability
From the renewably sourced ingredients used to make the polymer to reduced non-renewable energy consumption and reduced CO2 emissions, the cradle-to-gate life cycle assessment shows the sustainability benefits of Sorona® versus petroleum-based materials like nylon.
With end-product durability and recyclability, Sorona® offers various features that have the potential to reduce the environmental footprint at different stages in the life cycle of the final product.
A More Sustainable Manufacturing Process
DuPont™ Sorona® contains 37% annually renewable plant-based ingredients by weight.
Sorona® polymer production uses 30% less non-renewable energy and reduces greenhouse gas emissions by 63% compared to the production of an equal amount of nylon 6.
Since high non-renewable energy use and resulting high greenhouse gas emissions have a negative effect on climate change, lowering these numbers yields environmental benefits
Once in the factory, Sorona® fiber extrusion occurs at lower temperatures than other synthetic fibers. Since Sorona® can dye at the boiling point of water with no additional heat, pressure, or chemical carriers, there is potential to reduce energy consumption during fabric production.
The life cycle assessment also shows no catalysts containing any heavy metals are used in the polymerization of Sorona®, and no additional chemical treatments for stain resistance are required, a benefit for manufacturers.
For mills, Sorona® renewably sourced fiber is versatile and adaptable enough to be used in wovens, knits, circular knits, warp knits and other types of fabrics without sacrificing performance benefits.
For the consumer, garments with Sorona® can be washed in cold water, and since Sorona® dries faster than other fibers, dryer time may be reduced. Sorona® offers fade resistance, wrinkle release, durability and longevity, all of which help contribute to the end-to-end sustainability story.
As the face fiber in a carpet, Sorona® has the potential to be recycled by manufacturers. Research so far shows that carpet fiber made with Sorona® can be removed from the carpet backing and recycled at the end of its useful life. However, existing carpet recycling facilities do not accept PTT fiber for recycling today.
Durability, wear resistance and permanent stain and bleach resistance extend carpet life for consumers.
Third-Party Peer Review
As validation of the life cycle assessment, the Sorona® environmental benefits are supported by a third-party, peer-reviewed, Life Cycle Analysis conducted according to ISO standards. The results of the Sorona® life cycle assessment were reviewed by Prof. Konrad Saur of Five Winds International.
A Sustainable Fiber from Beginning to End
A breakthrough in integrated science, Sorona® is an advanced material that offers a unique combination of environmental and performance benefits compared to nylon.
The cradle-to-gate life cycle assessment demonstrates the sustainability benefits of Sorona® polymer production compared to nylon.