Researchers develop 100% biodegradable paper straws that do not become soggy par Frédéric PELASCINI | 5 Fév 2023 | Actualités Researchers develop 100% biodegradable paper straws that do not become soggy The paper straws that are currently available are not entirely made of paper alone. Straws made with 100% paper become too soggy when they come in contact with liquids and cannot function as straws. Accordingly, their surfaces should be coated. phys.org