One-step plastic surface modification for irreversible sealing with PDMS elastomer at room temperature

Abstract

In this study, we propose one-step chemical modification of plastics for bonding various plastics with poly(dimethylsiloxane) (PDMS) elastomer at room temperature. This was realized by anchoring poly[dimethylsiloxane-co-(3-aminopropyl)methylsiloxane] (amine-PDMS linker), a chemical composed of a PDMS backbone incorporating an amine side group, on the surface of thermoplastics. Following corona treatment of the PDMS-modified plastic and a sheet of PDMS, the two surfaces were placed in contact with each other and heated at 80°C for 1 h. Polycarbonate (PC), poly(ethyleneterephthalate) (PET), poly(vinylchloride) (PVC), and polyimide (PI) were bonded successfully to PDMS, and PC-PC homogeneous assembly was also realized using this method. © 14CBMS.