Waterborne Polyurethane Nanocomposites for Underwater
Self-Healing via Dynamic Covalent Bonds
Maryam Bonyani
Abstract
Polyurethane materials with dynamic covalent bonds offer a promising platform that combines recyclability, durability, and adaptability. However, most current systems depend on solvents and require external stimuli, such as heat or light, for healing, due to network rigidity and limited bond exchange reactivity. While waterborne polyurethanes present a more sustainable alternative, their self-healing performance, particularly under water, remains largely unexplored.
This research aims to develop a fully waterborne polyurethane nanocomposite capable of autonomous self-healing at room temperature in aqueous environments. By incorporating hydrolytically stable, water-assisted dynamic bonds, tuning soft/hard segment ratios, and adding functionalized montmorillonite nanoclays, the project seeks to enhance both healing efficiency and mechanical strength. Integrating DFT simulations with experimental validation, this work advances the design of recyclable, high-performance surface-active polymers for biomedical, cosmetic, and anti-biofouling coatings.
Friday, 5/23/2025 at 1:30 pm
CAMP 372
Advisor
Professor Sitaraman Krishnan
Other committee members
Professor Bethany Almeida
Professor Jihoon Seo
Professor Philip Yuya
Professor Goodarz Ahmadi