Application of ESCA to studies of structure and bonding in polymers

Abstract

Shake-up phenomena in a series of para-substituted polystyrenes have been studied by ESCA. Comparison with other spectroscopic data and with theoretical calculations within the sudden approximation, equivalent cores model, and CNDO SCF MO formalism identifies the shake-up structures arising from π*â†�π transitions involving the highest occupied and lowest unoccupied orbitals of the pendant phenyl groups. The relative intensities of different core levels and associated shake-up satellites are used to investigate the structure and surface morphology of some alkane styrene copolymers and polystyrene-polydimethylsiloxane AB block copolymers.