Glue bonds to nonstick surfaces and wipes clean with ethanol
4 days ago
- Researchers developed a small-molecule glue (CyclicFP-fmoc) that combines strong adhesion, ductility, and easy removal with ethanol.
- The adhesive bonds strongly to nonstick surfaces like PTFE (Teflon) via fluorine-fluorine interactions, achieving lap-shear strength of 1.3 MPa.
- The glue can be completely removed with ethanol, leaving no residue, and the recovered adhesive can be reused multiple times without loss of strength.
- The small-molecule design uses noncovalent bonds (hydrogen bonding, π-π stacking) for internal cohesion, enabling easy recycling.
- The adhesive's fluorinated structure suggests it may be a PFAS, raising environmental concerns; researchers urge study of its environmental fate.