Morphology and mechanical properties of polypropylene/high‐impact polystyrene blends from postconsumer plastic waste

Santana, Ruth Marlene Campomanes; Manrich, Sati

doi:10.1002/app.11760

Cited by 23 publications

(15 citation statements)

References 12 publications

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“…To enhance their mechanical properties, an effective compatibilization using appropriate compatibilizers should be applied. Compatibilization of polystyrene/polyolefin blends such as PS/PE, [8][9][10] PS/PP, 11 HIPS/PP, 12 and HIPS/PE [13][14][15] blends have been done using many different compatibilizers. The most frequently used compatibilizers are diblock styrene-butadiene copolymer (SB), styrene-butadiene-styrene triblock copolymer (SBS) and styrene-ethylene-butylene-styrene copolymer (SEBS).…”

Section: Introductionmentioning

confidence: 99%

Rheology and morphology of high impact polystyrene/ polyethylene blends and the effect of compatibilization on their properties

Aghjeh

Khodabandelou

Khezrefaridi

2009

J of Applied Polymer Sci

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Attempts were made to study rheology and morphology of high impact polystyrene/polyethylene (HIPS/PE) blends. The Effect of compatibilization using styrene-butadiene-styrene copolymer (SBS) and styrene-ethylene-butylene-styrene copolymer (SEBS) on their properties was also studied. The results of linear viscoelastic properties showed negative deviation of viscosity and elasticity from the mixing rules in low HIPS content blends, while positive deviation was observed for high HIPS content blends. The former was related to weak interface and the latter was attributed to the hydrodynamic interaction of PE and PB particles. A wide range of co-continuity was observed for HIPS/PE blends which decreased using compatibilization. It was found that SEBS had better efficiency of compatibilization than SBS due to lower molecular weight and the presence of ethylene block in SEBS structure. The fracture behavior of low and high HIPS content blends showed different mechanism because of higher volume contraction of PE than HIPS in solidification process and also different mechanical properties of HIPS and PE.

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Section: Introductionmentioning

confidence: 99%

Rheology and morphology of high impact polystyrene/ polyethylene blends and the effect of compatibilization on their properties

Aghjeh

Khodabandelou

Khezrefaridi

2009

J of Applied Polymer Sci

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“…[3,4] However, the reprocessing of plastic wastes by a simple melt blending usually leads to poor physical properties of the products. [5,6] This is the case for PE/PET blends, which are characterized by gross phase segregation and a weak interfacial adhesion, because the two polymer components are immiscible and have extremely poor mechanical properties. [7] According to the literature data, [8,9] the most promising way to achieve PE/PET blends is by the addition of a compatibilizer with reactive groups, e.g., maleic anhydride (MA) or glycidyl methacrylate (GMA).…”

Section: Introductionmentioning

confidence: 99%

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Kaci¹,

Benhamida²,

Cimmino³

et al. 2005

Macro Materials & Eng

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Summary: This work is aimed at studying the morphology and the mechanical properties of blends of low density polyethylene (LDPE) and poly(ethylene terephthalate) (PET) (10, 20, and 30 wt.‐% of PET), obtained as both virgin polymers and urban plastic waste, and the effect of a terpolymer of ethylene‐butyl acrylate‐glycidyl methacrylate (EBAGMA) as a compatibilizer. LDPE and PET are blended in a single screw extruder twice; the first extrusion to homogenize the two components, and the second to improve the compatibilization degree when the EBAGMA terpolymer is applied. Scanning electron microscopy (SEM) analysis shows that the fractured surface of both the virgin polymer and the waste binary blends is characterized by a gross phase segregation morphology that leads to the formation of large PET aggregates (10–50 µm). Furthermore, a sharp decrease in the elongation at break and impact strength is observed, which denotes the brittleness of the binary blends. The addition of the EBAGMA terpolymer to the binary LDPE/PET blends reduces the size of the PET inclusions to 1–5 µm with a finer dispersion, as a result of an improvement of the interfacial adhesion strength between LDPE and PET. Consequently, increases of the tensile properties and impact strength are observed.

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“…The effects of compatibilizers such as poly(styrene‐ b ‐ethylene‐ co ‐butylene‐ b ‐styrene) (SEBS) in a 6 : 3 PP/HIPS composition have also been studied. This recycled blend (with 5 wt % SEBS) was reported to present the highest reduction in the dispersed‐phase particle size, with average diameters of 0.04–0.12 μm; this led to a higher average interfacial area of the HIPS particles 16…”

Section: Introductionmentioning

confidence: 91%

Thermal and mechanical properties of wood flour–polystyrene blends from postconsumer plastic waste

Lisperguer

Bustos

Saravia

2010

J of Applied Polymer Sci

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Polystyrene (PS) from packing materials and plastic cups was reinforced with 30 and 50% wood flour through a blending process with and without a commercial compatibilizing agent. The processability of the pure recycled polystyrene (rPS) and wood-rPS composites was studied in terms of the torque of the mixing process; this was then compared with that of a commercial virgin multipurpose PS. The physical and mechanical properties were compared with those of the virgin PS reinforced with 30 and 50% wood flour. The results show that the mechanical properties of the pure and reinforced rPS did not decrease with respect to the virgin PS, and in terms of the impact strength, the rPS was superior to the virgin plastic. The mechanical properties were not affected by the commercial compatibilizing agent, but the torque of the blends was significantly lower with the compatibilizer. Differential scanning calorimetry (DSC) and dynamic mechanical analysis were used to study the glass-transition temperature (T g ) of both the pure virgin PS and pure rPS and the wood flour-PS composites. The T g values of the rPS and wood-rPS composites were higher than those of the virgin PS and wood-virgin PS composites. The use of rPS increased the stiffness and flexural modulus of the composites. Thermogravimetric analysis revealed that the thermal stability of rPS and its composites was slightly greater than that of the virgin PS and its composites. These results suggest that postconsumer PS can be used to obtain composite materials with good mechanical and thermal properties.

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Morphology and mechanical properties of polypropylene/high‐impact polystyrene blends from postconsumer plastic waste

Cited by 23 publications

References 12 publications

Rheology and morphology of high impact polystyrene/ polyethylene blends and the effect of compatibilization on their properties

Rheology and morphology of high impact polystyrene/ polyethylene blends and the effect of compatibilization on their properties

Waste and Virgin LDPE/PET Blends Compatibilized with an Ethylene‐Butyl Acrylate‐Glycidyl Methacrylate (EBAGMA) Terpolymer, 1

Thermal and mechanical properties of wood flour–polystyrene blends from postconsumer plastic waste

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