Poly(butyl acrylate)/poly(vinylidene fluoride-co-hexafluoroacetone) blends as pressure-sensitive adhesives

The pressure-sensitive adhesive (PSA) properties and dynamic mechanical properties were measured for the poly(butyl acrylate) (PBA)/poly(vinylidene fluoride-co-hexafluoroacetone) [P(VDF-HFA)] blends. The PSA properties of PBA adhesive could be controlled by blending P(VDF-HFA). In order to investigate the relationship between PSA properties and dynamic mechanical properties for PBA/P(VDF-HFA) blends, the master curves of the dynamic mechanical properties, such as storage modulus G', loss modulus G '', and dynamic loss tangent tan delta, were constructed with the temperature-rate superposition principle. The probe tack and peel strength for PBA/P(VDF-HFA) blends were correlated with G' and G ''. Since the G' and G '' values increased with increasing P(VDF-HFA) content, the holding power of PBA adhesive could be advanced by blending P(VDF-HFA). (C) 1997 John Wiley & Sons, Inc.