March 23, 2012 AT 10:28 am

Stephanie Kwolek, inventor of Kevlar

Stephanie Kwolek

Stephanie Kwolek, inventor of Kevlar.

Stephanie Kwolek is the chemist who invented Kevlar in 1965.

She started working as a chemist in 1946 just to earn enough money to go to medical school, to fulfill her childhood dream of becoming a doctor. She soon fell in love with the work, though, which combined her interests in science and textiles.

One of very few female chemists working at Dupont, Stephanie was passionate about discovering new ways of working with synthetic fibers. She volunteered in 1964 for a project none of her colleagues seemed interested in: searching for a strong but lightweight fiber to use in tires.

While experimenting, Stephanie created a strange solution that was very different from ones she’d created before. It should have been a clear, thick fluid, like nylon polymer, but instead was thin and cloudy. “I think someone who wasn’t thinking very much or just wasn’t aware or took less interest in it, would have thrown it out.” But her curiousity and passion for discovery won out.

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