A U.S. startup promises to revolutionize the recycling of synthetic textiles, with polyester being a standout.
This is MacroCycle, an innovative company that has developed a recycling method that consumes 80% less energy than producing virgin polyester and at the same price.
The innovative startup already produces 100-kilo batches for fashion brands and is constructing reactors 2,000 times larger than two years ago.
The problem of textile recycling
Currently, only 9% of global plastic is recycled, but the situation for textiles is dramatically worse.
Only 0.5% of garments manage to be recycled: the rest ends up in landfills, incinerators, or polluting aquatic ecosystems.
The main difficulty lies in the fact that modern garments are complex blends of materials: polyester with cotton, elastane with nylon, as well as zippers and buttons.
Recycling these “Frankenstein textiles” with conventional methods is technically possible but economically unfeasible.
How MacroCycle’s technology works
Faced with this problem, the company’s founders, Stwart Peña Feliz and Jan-Georg Rosenboom, created this solution with the prestigious MIT.
Unlike traditional chemical methods, the scientific process they developed does not break down polymers to their base molecules.
Instead, it transforms the polymers into circular structures called macrocycles, which are easily separated from contaminants.
These rings are then reopened and reassembled into long polymer chains ready to become high-quality polyester recycling.
This approach greatly surpasses the efficiency of other chemical recycling methods, which only save between 20% and 30% of energy.
For this reason, MacroCycle has already moved from theory to practice.
After obtaining a Breakthrough Energy Fellowship, the company is building in 2025 a reactor 2,000 times larger than the one used two years ago and is already generating commercial revenue.
Fashion brands are testing the recycled material because it meets a fundamental condition: it is the same price as virgin plastic.
Peña Feliz explains his strategy: “The change will not come from within the oil companies. We have to make it expensive for them not to change“.
The potential impact of textile recycling technology
If MacroCycle manages to scale its technology successfully, the implications are significant.
It would allow for a real circular fashion where garments are recycled multiple times without loss of quality, reducing dependence on oil.
Additionally, the lower energy consumption of the textile recycling developed by MacroCycle could significantly reduce the CO₂ emissions associated with recycling and textile production.
By processing difficult fiber blends, tons of clothing would be prevented from ending up in landfills.
Other industries such as packaging or automotive could adapt this approach for their synthetic waste.
Furthermore, the installation of efficient chemical recycling plants at a regional level would generate employment and reduce dependence on imported raw materials.
MacroCycle’s technology represents a concrete tool to transform how we produce, consume, and recycle.
