Recycling Polymer Blends

Mantia, F. P. La; Scaffaro, R.

doi:10.1007/978-94-007-6064-6_23

Cited by 8 publications

(9 citation statements)

References 112 publications

(103 reference statements)

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“…Even in the case of polyolefins, simple mixing of different waste polymers leads typically into an immiscible blend, which has limited or no commercial use due to its inadequate mechanical properties. The immiscible blends lack strong interfacial bonding, resulting also in weak morphological stability, creating an increased risk of phase separation in further processing and use [6,11]. In order to overcome these shortcomings, compatibilizing agents can be used.…”

Section: Introductionmentioning

confidence: 99%

Promoting Recycling of Mixed Waste Polymers in Wood-Polymer Composites Using Compatibilizers

Martikka

Kärki

2019

Recycling

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Millions of tons of plastics are produced and consumed annually and should be recycled in a sustainable way. The effects of different compatibilizers on the properties of wood-mixed waste polymer composites are studied to promote recycling of plastics and to determine the potential of using waste plastics in composites. The effect of different addition levels and blending of compatibilizers is examined as well. The studied properties are microstructure, tensile and flexural properties, impact strength, and water absorption and thickness swelling in immersion. The results show that the addition of the selected compatibilizers improved the properties of wood-mixed waste polymer composites remarkably—all the studied mechanical properties and moisture resistance were improved by 50% or more. The effects depend strongly on the level of addition and the compatibilizer used. Findings show that compatibilization provides a feasible means to recycle waste plastics as feedstock for wood–plastic composites.

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Section: Introductionmentioning

confidence: 99%

Promoting Recycling of Mixed Waste Polymers in Wood-Polymer Composites Using Compatibilizers

Martikka

Kärki

2019

Recycling

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“…The result was composites with properties only slightly lacking from the virgin material ones. In case a maleated styrene pretreatment was applied, the mechanical properties and thermooxidative stability were drastically increased [23].…”

Section: Production Of Composite Materialsmentioning

confidence: 99%

Current Topics in Plastic Recycling

Charitopoulou¹,

Alexopoulou²,

Alexiou³

et al. 2022

Waste Material Recycling in the Circular Economy - Challenges and Developments

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This chapter presents an overview of current trends in plastic recycling and focuses on specific topics of interest. Firstly, there are presented all methods used for plastic recycling, along with the advantages and disadvantages of each method. Extra attention is paid to chemical recycling and especially, pyrolysis (thermal and catalytic), which is an environmentally friendly method that results in the formation of value-added products. Emphasis is given on three case studies where there are difficulties as regards the recycling of the plastic part: polymeric blends, since the existence of mixed plastic wastes may be challenging for their recycling; plastics originating in multilayer packaging, since the multilayer packaging consists of various materials, including plastics, paper, and metals that may be an obstacle for the recycling of the plastic part; and brominated flame-retarded plastics from waste electric and electronic equipment (WEEE), since in this case safe handling is required in order to avoid environmental contamination and a pretreatment step before recycling may be of paramount importance. These three case studies along with the mentioned difficulties and suggestions in order to overcome them are presented here, with the aim of offering insights for future studies on the management of plastic materials.

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“…Elastomers present cross-linked molecular structure after the curing or vulcanization process, which limits the possible recycling routes for their residues and also increases the economic cost of recycling due to the need of large amounts of energy and chemicals for prior devulcanization or size reduction process. 37 Therefore, this polymer class presents extremely low recycling rates in the world nowadays.…”

Section: Polymeric Materialsmentioning

confidence: 99%

“…Still, cross-linked rubbers residue has been mechanically recycled to obtain ground rubber crumb (GRC), which can be reused as a component of polymeric blends. 37 GRC can also be recycled by extrusion assisted by microwave, ultrasound energy, or supercritical fluids (e.g. water and CO 2 ), being a continuous devulcanization process for obtaining vulcanizable recyclates at a large scale.…”

Section: The Technical Know-how For Polymer Waste Recyclingmentioning

confidence: 99%

Current options for characterizing, sorting, and recycling polymeric waste

Silva

Wiebeck

2020

Progress in Rubber, Plastics and Recycling Technology

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Several researches and technologies on polymer recycling have been driven and justified by the uncontrolled and crescent polymer waste generation in the world. Herein, a critical and concise review on the recent and well-established recycling practices for polymer waste is presented, taking into account not only thermoplastics (or plastics) but also thermosets and elastomers. Moreover, sorting and characterization techniques for polymer waste recycling are detailed and their importance is discussed. An in-depth analysis of the literature indicated that novel and advanced recycling methods for polymeric waste (PW) present difficulties to be applied in the industrial sector, mainly the scientific innovations in the chemical recycling area. In the current scenario, new challenges for the recycling sector are linked to highly contaminated PW from electrical, electronic, and medical products.

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Recycling Polymer Blends

Cited by 8 publications

References 112 publications

Promoting Recycling of Mixed Waste Polymers in Wood-Polymer Composites Using Compatibilizers

Promoting Recycling of Mixed Waste Polymers in Wood-Polymer Composites Using Compatibilizers

Current Topics in Plastic Recycling

Current options for characterizing, sorting, and recycling polymeric waste

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