Evolution of shell formation process in PP/PMMA/PS ternary blends: correlation between the melt rheology and phase morphology

Berahman, Reyhaneh; Aghjeh, Mir Karim Razavi; Mazidi, Majid Mehrabi; Omrani, Sanaz

doi:10.1007/s10965-016-1120-4

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…The SEM graphs of the brittle fracture surface of R‐PP/R‐HIPS compounds are shown in Figure . It is found that the morphology of the brittle fracture surface exhibits an obvious “sea‐island” structure, where the gray part is the R‐PP continuous phase and the black hole is the etched dispersed R‐HIPS phase . Without the addition of SEPS, the SEM graph of R‐PP/R‐HIPS blends shows an inhomogeneous distribution and irregular shape of the dispersed phase (Figure A).…”

Section: Resultsmentioning

confidence: 99%

Effects of polystyrene‐b‐poly(ethylene/propylene)‐b‐polystyrene compatibilizer on the recycled polypropylene and recycled high‐impact polystyrene blends

Kong

et al. 2018

Polymers for Advanced Techs

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The recycled polypropylene/recycled high-impact polystyrene (R-PP/R-HIPS) blends were melt extruded by twin-screw extruder and produced by injection molding machine. The effects of polystyrene-b-poly(ethylene/propylene)-b-polystyrene copolymer (SEPS) used as compatibilizer on the mechanical properties, morphology, melt flow index, equilibrium torque, and glass transition temperature (T g ) of the blends were investigated. It was found that the notch impact strength and the elongation at break of the R-PP/R-HIPS blends with the addition of 10 wt% SEPS were 6.46 kJ/m 2 and 31.96%, which were significantly improved by 162.46% and 57.06%, respectively, than that of the uncompatibilized blends. Moreover, the addition of SEPS had a negligible effect on the tensile strength of the R-PP/R-HIPS blends. Additionally, the morphology of the blends demonstrated improved distribution and decreased size of the dispersed R-HIPS phase with increasing the SEPS content. The increase of the melt flow index and the equilibrium torque indicated that the viscosity of the blends increased when the SEPS was incorporated into the R-PP/R-HIPS blends. The dynamic mechanical properties test showed that when the content of SEPS was 10 wt%, the difference of T g decreased from 91.72°C to 81.51°C. The results obtained by differential scanning calorimetry were similar to those measured by dynamic mechanical properties, indicating an improved compatibility of the blends with the addition of SEPS.

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Section: Resultsmentioning

confidence: 99%

Effects of polystyrene‐b‐poly(ethylene/propylene)‐b‐polystyrene compatibilizer on the recycled polypropylene and recycled high‐impact polystyrene blends

Kong

et al. 2018

Polymers for Advanced Techs

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“…The Hobbs spreading coefficient theory describes the relationship between interfacial tension and ternary blend morphology [35]. To predict ternary blend morphology by the interfacial tensions between different blend component pairs, the Hobbs spreading coefficient theory is mostly used [11][12][13][14]. The spreading coefficient (λ) can be calculated using Equations ( 7)-( 9):…”

Section: Prediction Of Morphology By Contact Angle Measurementsmentioning

confidence: 99%

“…The morphology determines final mechanical properties. According to the literature, ternary blends morphology can be estimated using spreading coefficients calculated by interfacial tensions [11][12][13][14]. Zhang et.al [12] described the hierarchical factors in order of priorities, such as interfacial adhesion, interfacial tension, viscosity ratio and shear stress that affect the final phase morphology of ternary blend.…”

Section: Introductionmentioning

confidence: 99%

Choosing an Effective Compatibilizer for a Virgin HDPE Rich-HDPE/PP Model Blend

2021

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The most widely used commodity polymers in the rigid packaging industry are polypropylene (PP) and high-density polyethylene (HDPE). For example, blow molding grade of HDPE as a bottle and injection molding grade of PP as a cap are often used to produce detergent bottles. Therefore, the recycled HDPE bottles from post-consumer waste include PP as a contaminant originated from PP bottle caps. To simulate mechanical recycling of bottle waste, the mechanical properties of HDPE-rich-HDPE/PP virgin model blend were studied. For compatibilization, ethylene-based olefin block copolymer, propylene-based olefin block copolymer, ethylene propylene random copolymer, and styrene-butadiene-styrene triblock copolymer were chosen as potential compatibilizer candidates. Contact angle measurements, morphological analysis, adhesion tests of compatibilizer candidates to polymer blend components and the tensile as well as tensile impact properties of the ternary blends were studied. It was found that the ethylene-based olefin block copolymer was the most effective compatibilizer resulting in a return of mechanical properties to those of neat vHDPE due to its ability to encapsulate dispersed vPP particles in a vHDPE matrix (core-shell morphology) and the best adhesion to polymer blend components.

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The effects of extrusion parameters and blend composition on the mechanical, rheological and thermal properties of LDPE/PS/PMMA ternary polymer blends

Ding¹,

Abeykoon²,

Perera³

2022

Advances in Industrial and Manufacturing Engineering

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Evolution of shell formation process in PP/PMMA/PS ternary blends: correlation between the melt rheology and phase morphology

Cited by 8 publications

References 31 publications

Effects of polystyrene‐b‐poly(ethylene/propylene)‐b‐polystyrene compatibilizer on the recycled polypropylene and recycled high‐impact polystyrene blends

Effects of polystyrene‐b‐poly(ethylene/propylene)‐b‐polystyrene compatibilizer on the recycled polypropylene and recycled high‐impact polystyrene blends

Choosing an Effective Compatibilizer for a Virgin HDPE Rich-HDPE/PP Model Blend

The effects of extrusion parameters and blend composition on the mechanical, rheological and thermal properties of LDPE/PS/PMMA ternary polymer blends

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