Polystyrene/Recycled Sbr Powder Compounds Produced in An Internal Batch Mixer

Macsiniuc, Adrian; Rochette, Annie; Brisson, Josée; Rodrigue, Denis

doi:10.1177/147776061403000401

Cited by 19 publications

(27 citation statements)

References 13 publications

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“…Polymer swelling is defined as a volume increase of the gel fraction by a liquid or a gas [91]. Macsiniuc et al [92] proposed a pre-treatment of rubber particles in a solvent to improve the compatibility between rubber and plastic for TPE preparation. This method is based on swelling the rubber chains by a solvent, improving the penetration of the dissolved thermoplastic matrix molecules into the crosslinked rubber network.…”

Section: Gtr Surface Modification and Devulcanisationmentioning

confidence: 99%

“…This method is based on swelling the rubber chains by a solvent, improving the penetration of the dissolved thermoplastic matrix molecules into the crosslinked rubber network. Macsiniuc et al [92] studied the swelling behavior of SBR particles and the penetration of matrix molecules in the crosslinked rubber structure. They reported increased Young's modulus (468 to 652 MPa), tensile strength (5.14 to 9.39 MPa), and impact strength (35.2 to 50.1 J/m).…”

Section: Gtr Surface Modification and Devulcanisationmentioning

confidence: 99%

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Waste Rubber Recycling: A Review on the Evolution and Properties of Thermoplastic Elastomers

2020

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Currently, plastics and rubbers are broadly being used to produce a wide range of products for several applications like automotive, building and construction, material handling, packaging, toys, etc. However, their waste (materials after their end of life) do not degrade and remain for a long period of time in the environment. The increase of polymeric waste materials' generation (plastics and rubbers) in the world led to the need to develop suitable methods to reuse these waste materials and decrease their negative effects by simple disposal into the environment. Combustion and landfilling as traditional methods of polymer waste elimination have several disadvantages such as the formation of dust, fumes, and toxic gases in the air, as well as pollution of underground water resources. From the point of energy consumption and environmental issues, polymer recycling is the most efficient way to manage these waste materials. In the case of rubber recycling, the waste rubber can go through size reduction, and the resulting powders can be melt blended with thermoplastic resins to produce thermoplastic elastomer (TPE) compounds. TPE are multi-functional polymeric materials combining the processability of thermoplastics and the elasticity of rubbers. However, these materials show poor mechanical performance as a result of the incompatibility and immiscibility of most polymer blends. Therefore, the main problem associated with TPE production from recycled materials via melt blending is the low affinity and interaction between the thermoplastic matrix and the crosslinked rubber. This leads to phase separation and weak adhesion between both phases. In this review, the latest developments related to recycled rubbers in TPE are presented, as well as the different compatibilisation methods used to improve the adhesion between waste rubbers and thermoplastic resins. Finally, a conclusion on the current situation is provided with openings for future works.

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Section: Gtr Surface Modification and Devulcanisationmentioning

confidence: 99%

Section: Gtr Surface Modification and Devulcanisationmentioning

confidence: 99%

Waste Rubber Recycling: A Review on the Evolution and Properties of Thermoplastic Elastomers

2020

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“…Macsiniuc et al [18] investigated mechanical properties and morphology of PS/SBRr blends compatibilized with styrene (ethylene butylene) styrene (SEBS). PS/SBRr blends presented rubber particles distribution relatively well disperded in PS matrix, heading to impact strength improvement.…”

Section: Introductionmentioning

confidence: 99%

RSM applied to PS/SBRr/SEBS Blends. Proper tool for maximized properties

Luna

Ferreira

Siqueira

et al. 2020

Mater. Res. Express

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Reusing rubber waste from footwear industry emerges as great practise in order to reduce environmental damage on natural ecosystems. Based on this target, the present work aimed to apply the response surface methodology (RSM) to polystyrene/styrene-butadiene PS/SBRr blends compatibilized with styrene-ethylene-butylene-styrene (SEBS). A mixture planning was applied to PS/SBRr/SEBS blends in order to investigate mechanical and thermomechanical behaviors as response variables. Scanning electron microscopy (SEM) was used to evaluate the morphology of investigated blends, which were melt extruded in a corrotational twin screw extruder and specimens were injection moulded. High impact strength, toughness, elongation at break and thermal deflection temperature (HDT) were achieved at SEBS rich region (∼10%). At PS rich region, tensile strength, Shore D hardness and Vicat softening temperature (VST) were more expressive. Related to morphological character, blends with 10% SEBS presented the highest interfacial adhesion, with high level of plastic deformation. Gathered results show that depending on the composition, properties significantly change, being RSM a proper tool to preview trends on mechanical and thermomechanical properties. In general, PS/SBRr/SEBS blends may be properly used as packaging and building applications.Danilo Diniz Siqueira https:/ /orcid.org/0000-0002-3533-513X Renate Maria Ramos Wellen https://orcid.org/0000-0002-3565-7366

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“…[18] The use of rubber waste in mixtures with polystyrene has been studied with the objective of reusing them and producing materials with adequate properties. [19][20][21][22][23] However, due to structural and viscosity differences, the simple mixing between the materials does not produce a new one with properties synergism. [24][25][26] To solve this problem, in general, a compatibilizer is used to act on the interface of the constituents of the mixture, promoting adhesion, reduction of interfacial tension and improving the dispersion.…”

Section: Introductionmentioning

confidence: 99%

“…The use of rubber waste in mixtures with polystyrene has been studied with the objective of reusing them and producing materials with adequate properties . However, due to structural and viscosity differences, the simple mixing between the materials does not produce a new one with properties synergism .…”

Section: Introductionmentioning

confidence: 99%

Blends of Polystyrene/Shoes Waste (SBRr): Influence of Mixture Sequence and Compatibilizer

Luna

Silva

Araújo

et al. 2019

Macromolecular Symposia

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The aim of this research is to analyze the influence of the mixture sequence and compatibilizer on the morphology and mechanical and thermomechanical properties of polystyrene (PS)/shoes waste (SBRr) blends. The blends are processed in a twin screw co‐rotating extruder and then injection molded. They are analyzed by impact and tensile tests, Shore D hardness, heat deflection temperature (HDT), ductile‐brittle transition temperature and transmission electron microscopy (TEM). The results showed that there is a significant increase in the impact strength, in the hardness and in the HDT of the blends when PS and styrene–butadiene–styrene (SBS) were mixed together in a first extrusion, prior to the incorporation of the SBRr into a second extrusion. However, the different mixing sequences studied apparently did not influence the results of tensile strength. The morphology showed by the mixing sequence (PS/SBS) + SBRr evidenced a better dispersion of the SBRr in the PS matrix, favoring better properties.

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Polystyrene/Recycled Sbr Powder Compounds Produced in An Internal Batch Mixer

Cited by 19 publications

References 13 publications

Waste Rubber Recycling: A Review on the Evolution and Properties of Thermoplastic Elastomers

Waste Rubber Recycling: A Review on the Evolution and Properties of Thermoplastic Elastomers

RSM applied to PS/SBRr/SEBS Blends. Proper tool for maximized properties

Blends of Polystyrene/Shoes Waste (SBRr): Influence of Mixture Sequence and Compatibilizer

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