NASA Design and Analysis of PEGDA Hydrogels for Microgreen Cultivation in Space

Authors

Fabiha Samiha, CUNY New York City College of TechnologyFollow
Luis E. Luna, CUNY New York City College of TechnologyFollow
Kelly Wu, CUNY New York City College of Technology
Gabriel Antigua, CUNY New York City College of Technology
Artur Abramyan, CUNY New York City College of Technology

Document Type

Poster

Publication Date

5-8-2025

Abstract

Through multiple experiments, Polyethylene Glycol Diacrylate (PEGDA), a biocompatible polymer, has shown potential as a soilless growing medium for microgreens like arugula. However, a challenge arises when the roots run out of space within the hydrogel capsule, pushing the plant out of position and preventing it from absorbing nutrients from the PEGDA.

This study aims to address this challenge by analyzing different 3D-printed mold designs for the creation of the hydrogel capsules. The most promising designs include coil and tree-branch models, which encourage roots to grow in a way that relieves pressure on the leaf side of the plant, helping to prevent uprooting. Further challenges arose during testing, such as contraction of the hydrogel when dry, causing seeds to pop out of the capsule prematurely. Further research is needed to continue designing and analyzing new mold shapes for optimal success at growing microgreens inside PEGDA hydrogels.

Comments

This poster was presented at the 42nd Semi-Annual Dr. Janet Liou-Mark Honors & Undergraduate Research Poster Presentation, May 8, 2025.

Mentor: Dr. Ozlem Yasar (Mechanical Engineering Technology)