“The real circuit must start with raw materials,” says Peña. “We talk about the circularity in many industries, but for textiles, we have to deal with what we use on the source.”
Designed from recombinant DNA, SELPS are copying proteins inspired by silk and elastin that can be adapted to qualities such as tensile strength, color affinity and elasticity. Silk amino acid sequences – such as Glicina-Alanin and Glicina-Seafold, while Elastin’s molecular structure adds searchers. Combine these molecules like Lego blocks and Voilà! – At least theoretically, you have an ideal fiber fiber.
Early degree startup, good modder create their elastic with protein from E. colicommon bacteria. The process involves the transformation of proteins into gel-like gel, which can then be entered into fibers through a damp spinning. These fibers are then processed in non-woven textiles or threads and yarns to make woven fabrics.
Scaling, however, remains a challenge: produce a single swatt of test fabric, says Blake, it needs at least one kilogram (approximately two kilograms) of microbial material. Fiber must also be stretchable, durable and moisture resistant in all true proportions. “We’re still solving those questions using different chemical additives,” she says. For this reason, it is experimented with plant proteins such as wheat gluten, which says it is available in larger quantities of bacteria.
Timothy McGee, biomaterial expert in speculative technologies for research laboratories, says the production is the biggest obstacle for biotexting startups. “Many laboratories and startups around the world successfully create recombinant proteins with incredible traits, but often struggling to turn those proteins into useful fibers,” he says.
