Overcoming the adhesion paradox and switchability conflict on rough surfaces with shape-memory polymers.

ABSTRACT: Smart adhesives that can be applied and removed on demand play an important role in modern life and manufacturing. However, current smart adhesives made of elastomers suffer from the long-standing challenges of the adhesion paradox (rapid decrease in adhesion strength on rough surfaces despite adhesive molecular interactions) and the switchability conflict (trade-off between adhesion strength and easy detachment). Here, we report the use of shape-memory polymers (SMPs) to overcome the adhesion paradox and switchability conflict on rough surfaces. Utilizing the rubbery-glassy phase transition in SMPs, we demonstrate, through mechanical testing and mechanics modeling, that the conformal contact in the rubbery state followed by the shape-locking effect in the glassy state results in the so-ca

SUBMITTER: Linghu C 

PROVIDER: S-EPMC10068835 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature