Comparative rheological study demonstrates enhanced interfacial adhesion in ABS/SEBS-g-MA copper composites coated with polydopamine, indicating improved melt flow and microstructure control.
Characterizing and understanding composite polymeric systems' rheological behavior is essential to tune their melt flow in polymer processing machinery. Also, rheological tests are suitable tools to evaluate the microstructure and interface adhesion of polymeric composites, which are relevant parameters on the composite performance in their applications. Poly(acrylonitrile‐ co ‐butadiene‐ co ‐styrene) (ABS) and its composites are essential materials used to manufacture consumer goods necessary to maintain the quality of life of human beings. In this work, we report on polymer systems based on ABS and poly(styrene‐ block ‐ethylene‐ co ‐butylene‐ block ‐styrene)‐ graft ‐maleic anhydride (SEBS‐ g ‐MA) as polymer matrix containing dispersed copper microparticles (ABS:SEBS‐ g ‐MA:Cu). Polydopamine, a bioinspired polymer, was applied as a filler‐matrix interface compatibilizer of the composites. The linear viscoelastic rheological measurements evidence a shear‐thinning behavior for the composites, and the polydopamine coating affects the polymer phase's relaxation time. The cohesive energy density (E c ) and SEM micrographs indicate good adhesion between copper and ABS:SEBS‐ g ‐MA due to polydopamine interfacial adherence.
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Sakahara et al. (2021) studied this question.
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