Mechanically Robust Polyurethane Elastomers Enabled by Soft-Segment-Regulated Hydrogen Bonds and Microphase Separation for Ultrasound Imaging Medical Catheters

Conventional strategies for enhancing the mechanical robustness of thermoplastic polyurethane elastomers (TPUs) predominantly rely on hard-segment engineering, such as introducing dynamic covalent/noncovalent bonds or optimizing chain extenders, yet overlook the...