Publications Details
New functionalized block copolymers for bonding copper to epoxy
We are exploring the use of functionalized block copolymers for bonding copper to epoxy in printed wiring boards. Our program involves four key elements: i) synthesis of suitable functionalized block copolymers; ii) characterization of the conformation of the copolymers at the relevant interfaces by neutron reflectivity; iii) spectroscopic measurements of chemical bonding, and iv) measurement of the mechanical properties of the interfaces. The copolymers are synthesized by living, ring-opening metathesis polymerization. This relatively new technique allows great flexibility for synthesis of functionalized block copolymers in that the initiators are relatively insensitive to a wide range of functional groups. Significant adhesion enhancement has been observed in lap shear tests.