PHOTOCHEMICAL BEHAVIOR OF POLY(VINYL ALCOHOL) BEARING P-PHENYLENEDIACRYLATE GROUPS

Spectral features and photochemical reactivities were studied on poly( vinyl alcohol) bearing p-phenylenediacrylate groups (PVA-p-PDAmC2) in comparison with ethyl hydrogen p-phenylenediacrylate (p-PDAmC2). PVA-p -PDAmC2 has a very high photoreactivity compared with p-PDAmC2; this c an be ascribed to the formation of ground state pairs of p-PDAmC2 moie ties as side chains due to repulsive interaction between the hydrophob ic side chains and the hydrophilic main PVA polymer chain. Some polyme rs showed features of photoresist with a resolution of 2.5 mu m. (C) 1 998 Elsevier Science Ltd. All rights reserved.