Ph.D. student invents biodegradable sanitary napkin


In Chennai, a Ph.D. student has invented a plastic-free sanitary napkin that biodegrades in just one month.

“It is made of cellulose derivatives,” derived from plants, says Preethi Ramadoss, who is a student of the Department of Crystal Growth Centre of Anna University. “It [also] has turmeric, vettiver and neem and lemon extracts. It has been tested against common pathogens responsible for bacterial vaginosis in women.”

The materials absorb 1,700% of its own weight, Ramadoss tells The Hindu. She adds that she was inspired to create the sanitary napkin by her mother’s preference for natural-based home remedies. “She created a love for nature and environment in me and when I got this opportunity, I chose to develop something that would be useful for women and not harm nature,” she added.

The project received funding from the Department of Science and Technology for Women Scientists.

AU has applied for a patent.