Dipul Patel

MacroCycle Technologies, a startup co-founded by MIT alumni Stwart Peña Feliz, MBA '23 and Dr. Jan-Georg Rosenboom turns plastic and polyester waste into virgin-grade PET (a type of plastic) using a process that consumes 80% less energy than traditional methods—providing a pathway where plastics are not only diverted from landfills and the ocean, but can also be turned back into plastics without the emissions when powered with renewable energy. Two years after launching his company, Peña Feliz was eager to share what he’s learned with current MIT Sloan students. And Product Management Lab (PM-Lab) students Alain Hyacinthe, MBA ’26; Mallika Khanna, MBA ’26; Jules Nguyen, MBA ’26; and Ethan Takeyama, MBA ’26; were eager to help MacroCycle take its next big step: entering new markets in the world of textiles.