Autocatalytic process sees amine droplet degrade bulk polymer

An image showing base-triggered self-amplifying degradable polyurethanes with the ability to translate local stimulation to continuous long-range degradation

Source: © Steven Zimmerman/University of Illinois

Rare example of a tiny local stimulation generating a macroscopic breakdown

Scientists in the US have reported a new polymer that degrades under mild conditions and propagates its own breakdown. Their polyurethanes undergo base-triggered degradation, which releases amines. These amines catalyse the process and result in breakdown across the material.