Composites ofABSwithSEBS‐g‐MAand copper microparticles modified by mussel‐bioinspired polydopamine: A comparative rheological study

Abstract

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 (Ec) and SEM micrographs indicate good adhesion between copper and ABS:SEBS‐g‐MA due to polydopamine interfacial adherence.

Examination of compressive and flexural behaviors of acrylonitrile-butadiene-styrene filled with hemp fiber particles

“…of ABS after thermal aging with the maleic anhydride groups bonded on the SEBS polymer backbone as illustrated in Figure 2. 63,64 Additionally, physical entanglement between SEBS-g-MA bonded hemp fiber molecules and ABS could improve mechanical interlocking between ABS and hemp fibers. 65…”

“…of ABS after thermal aging with the maleic anhydride groups bonded on the SEBS polymer backbone as illustrated in Figure 2. 63,64 Additionally, physical entanglement between SEBS-g-MA bonded hemp fiber molecules and ABS could improve mechanical interlocking between ABS and hemp fibers. 65 After decomposing the fabricated filaments into small pieces, compressive and threepoint bending test specimens were manufactured according to ASTM D 695-15 and ASTM D790 standards, respectively, by using the injection molding technique.…”

Influência da polidopamina e do SEBS-g-MA em compósitos com altíssima concentração de cobre para uso em manufatura aditiva de peças metálicas uso de processo Eco-Friendly.

“…A técnica de polimerização da polidopamina utilizada neste trabalho foi feita utilizando-se as substâncias: Cloridrato de aminometilmetano tris (hidroximetil) (TRIS) e cloridrato de dopamina (DOPA) [8][9][10][25][26][27][28].…”