Abstract
The gradient structure was observed for the sectional layer of the poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate); P(2EHA-AA-VAc)/poly(vinylidene fluoride-co-hexafluoro acetone); P(VDF-HFA) (30/70) blend thin film using SEM. The elipsoidal domain corresponded to P(2EHA-AA-VAc) particle was observed and its size increased from surface to bottom. In the bottom side, P(2EHA-AA-VAc) layer having ∼10μm thickness was formed. The characteristic gradient domain morphology was reduced by adding the micrograin silica into P(2EHA-AA-VAc)/P(VDF-HFA) (30/70) blend. Finally, pressure sensitive adhesive; PSA properties (180° peel adhesion and probe tack) were evaluated in these blends on account of confirming the effect of the micrograin silica on the gradient structure.
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Kano, Y., Akiyama, S., Sano, H. et al. Controlling Gradient Domain Morphology in Blends of Poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate)/Poly(vinylidene fluoride-co-hexafluoroacetone) by Adding Micrograin Silica. Polym J 29, 158–164 (1997). https://doi.org/10.1295/polymj.29.158
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DOI: https://doi.org/10.1295/polymj.29.158