Abstract
Poly(styrene-b-butadiene-b-styrene) (SBS) was blended with a tackifier resin such as aliphatic resin, aromatic resin or hydrogenated dicyclopentadiene resin to form the model pressure sensitive adhesive (PSA), and the dynamic mechanical and morphological properties of these model PSAs were characterized. Compatibility of the SBS/tackifier resin blend was investigated by observing change in T g and was substantiated by morphological observation. As the amount of the tackifier resin increased, the order disorder transition temperature of the blend determined by analyzing the small-angle X-ray scattering profile was greatly reduced. However, G' of the SBS/tackifier blend either increased or decreased, depending on the compatibility. Dynamic mechanical and morphological properties of the blend were influenced by whether the tackifier was compatible with the polystyrene block or polybutadiene block of SBS.
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