Journal of Adhesion, Vol.43, No.3, 223-237, 1993
PEEL MORPHOLOGY OF ACRYLATE ADHESIVE POLYMERS
The morphology of various acrylate adhesive polymers peeled from Pyrex(R) glass was investigated. The composition ratios of acrylate polymers [poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate): P(2EHA-AA-VAc)] are 2EHA/AA/VAc = 100/0/0 (PEHA0000), 95/5/0 (PEHA0500), 92/8/0 (PEHA 0800) and 85/5/10 (PEHA0510) (mol%). The peel pattern of PEHAOOOO exhibited a greatly elongated saw tooth, while PEHA0500 and PEHA0800 revealed the characteristic branched stringiness at the edge of the saw tooth. The peel morphology of PEHA0510 exhibited the regular saw tooth. The peel morphological pattern differences between the acrylate adhesive polymers were examined using dynamic mechanical thermal analysis, surface tension and the fluorescence probe technique.