The effects of recycling process on thermal, chemical, rheological, and mechanical properties of PC/ABS binary and PA6/PC/ABS ternary blends

Abstract

In this study, polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) and polyamide 6/PC/ABS (PA6/PC/ABS) blends were reprocessed (recycled) five times and the influences of multiple molding processes on the thermal, chemical, morphological, rheological, and mechanical properties of the recycled and virgin specimens were investigated. The impact strength, tensile properties (elastic modulus, strength, and strain at break), and flexural properties (modulus and strength) were measured to determine the mechanical properties of the blends. The rheology of the samples was evaluated via measuring the melt flow index (MFI). It was concluded that the chemical structures, melting temperatures, and thermal properties of both blends did not significantly change with recycling. From the mechanical tests, in general, it was found that increasing the number of recycling processes did not considerably alter the flexural properties and tensile strength of PC/ABS blends, but decreased their MFI and impact strength. On the other hand, the elastic modulus and tensile strength of PA6/PC/ABS decreased with the number of recycling processes, whereas MFI, flexural properties, and impact strength of the ternary blends improved.

Investigation the mechanical, rheological, and morphological properties of acrylonitrile butadiene styrene blends with different recycling number content

“…The increase in the strain at break was a result of the enhancement of the material homogeneity induced by recycling and the decrease in the strain at break was due to the thermomechanical degradation. 21 Degradation occurring during successive injection molding cycles decreased the molecular weight. Thus, polymer was exposed to high shear and temperature during the molding, a decrement in viscosity owing to the chain scissions and a decrement of strain at break occurred.…”

“…The influence of recycling number on the properties of other polymeric materials [10][11][12][13][14][15][16][17][18][19][20][21] was also investigated. In addition, blends of virgin-recycled polymers such as polyethylene (PE), 22 polyvinyl chloride (PVC), 22 polyethylene terephthalate (PET), 22,23 ABS, 24,25 polyamide (PA), 26 polystyrene (PS) 27 were studied by the researchers.…”

AVANÇOS PARA MELHORIA DA RESISTÊNCIA À INCRUSTAÇÃO EM MEMBRANAS DE ULTRAFILTRAÇÃO COM POTENCIAL PARA APLICAÇÃO NO TRATAMENTO DE ÁGUAS RESIDUAIS OLEOSAS: uma revisão

“…A Figura 1 ilustra a representação da estrutura molecular do terpolímero ABS. Fonte: Kuram, Ozcelik, & Yilmaz (2016).…”

Recycled polycarbonate/acrylonitrile–butadiene–styrene reinforced and toughened through chemical compatibilization

“…Polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) blends are commercial polymer blends that have the combined advantages of PC and ABS. In PC/ABS blends, PC contributes good toughness and heat‐distortion temperature properties, whereas ABS improves the processability and reduces the costs of the blends . Therefore, the latter is widely used in electrical and electronics products, such as those found in the automotive industry, and in cell phone housings, office supplies, and household appliances …”