Rheological and mechanical properties of recycled polyethylene films contaminated by biopolymer

Gere, Dániel; Czigány, Tibor

doi:10.1016/j.wasman.2018.02.045

Cited by 29 publications

(13 citation statements)

References 27 publications

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“…Thus, "islands" of the biopolymer will cause an indication of fracture during mechanical testing (see further the discussion about the SEM micrographs). Gere and Czigany studied the addition of PLA to a mixed film waste consisting of HDPE and low density polyethylene (LDPE) [4]. When 2% of PLA was added, no significant changes in the tensile properties were recorded.…”

Section: Resultsmentioning

confidence: 99%

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Effect of a Small Amount of Thermoplastic Starch Blend on the Mechanical Recycling of Conventional Plastics

2020

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The usage of bioplastics could increase in the future which may cause contamination of the waste streams of conventional plastics. The objective of this study was to investigate if a small amount of biopolymer contaminating conventional polymers would significantly affect mechanical and thermal properties. A starch-based plastic was first compounded by blending plasticised starch with PLA (polylactic acid). This polymer blend was subsequently compounded with HDPE (high density polyethylene), PP (polypropylene) or PET (polyethylene terephthalate) at 0%, 1% and 5% of the biopolymer. The compounds were characterised by tensile tests, Charpy impact tests, DSC (differential scanning calorimetry) and FESEM (field emission scanning electron microscopy). Tests showed that PE and PP were not significantly affected in terms of tensile strength and modulus but the elongation at break showed a strong reduction. PET was, on the other hand, incompatible with the starch-based plastic. Already at 1% contamination, PET had lost most of its impact strength.

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Section: Resultsmentioning

confidence: 99%

“…The effect of small amounts of biopolymers contaminating conventional polymers is not well studied. Gere and Czigany studied the influence of PLA contaminating recycled polyethylene films [4]. It was concluded that 2% contamination of PLA gave tolerable properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Small Amount of Thermoplastic Starch Blend on the Mechanical Recycling of Conventional Plastics

2020

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“…Research studies [ 136–139 ] have been conducted on the mechanical recycling of the blend of conventional and biopolymers. Gere and Gzigany [ 136 ] investigated the mechanical and rheological properties of recycled PE films contaminated with PLA at various concentrations. They used a mixture of HDPE (50%) and LDPE (50%), whereas virgin PLA was used to minimize the influencing factors.…”

Section: Recyclingmentioning

confidence: 99%

Synthetic Biopolymers and Their Composites: Advantages and Limitations—An Overview

Mtibe

Motloung

Bandyopadhyay

et al. 2021

Macromol. Rapid Commun.

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Recently, polymer science and engineering research has shifted toward the development of environmentally benign polymers to reduce the impact of plastic leakage on the ecosystems. Stringent regulations and concerns regarding conventional polymers are the main driving forces for the development of renewable, biodegradable, sustainable, and environmentally benign materials. Although biopolymers can alleviate plastic‐related pollution, several factors dictate the utilization of biopolymers. Herein, an overview of the potential and limitations of synthetic biopolymers and their composites in the context of environmentally benign materials for a sustainable future are presented. The synthetic biopolymer market, technical advancements for different applications, lifecycle analysis, and biodegradability are covered. The current trends, challenges, and opportunities for bioplastic recycling are also discussed. In summary, this review is expected to provide guidelines for future development related to synthetic biopolymer‐based sustainable polymeric materials suitable for various applications.

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“…If these materials are used for other applications (e.g., a computer mouse housing), the material will enter the conventional waste streams and will not be separated for further recycling steps due to the low volume in waste streams [23,24]. The residues will either be transferred to landfill or to incineration with energy recovery depending on the current end-of-life infrastructure in the respective country.…”

Section: Introductionmentioning

confidence: 99%

End-of-Life Options for Bio-Based Plastics in a Circular Economy—Status Quo and Potential from a Life Cycle Assessment Perspective

Spierling

Venkatachalam

Mudersbach³

et al. 2020

Resources

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The bio-based plastic market is forecast to grow in the next years. With a growing market share and product range, the implementation of circular thinking is becoming more and more important also for bio-based plastics to enable a sound circular economy for these group of plastics. Therefore, it is important to assess the environmental performance for different end-of-life options of bio-based plastics from an early stage on. This review presents a comprehensive overview on the current status quo of different end-of-life options for bio-based plastics from an environmental perspective. Based on the status quo and the corresponding impact assessment results, the global plastic demand as well as the technical substitution potential of bio-based plastics, the environmental saving potential in case of the different end-of-life options was calculated. The review shows that there is a focus on polylactic acid (PLA) regarding end-of-life assessment, with studies covering all end-of-life options. The focus of the impact assessment has been set on global warming potential (GWP). With respect to GWP, the analysis of a future global potential of PLA showed, for mechanical recycling, the highest saving potential with 94.1 Mio. t CO2-eq. per year in comparison to virgin material.

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Rheological and mechanical properties of recycled polyethylene films contaminated by biopolymer

Cited by 29 publications

References 27 publications

Effect of a Small Amount of Thermoplastic Starch Blend on the Mechanical Recycling of Conventional Plastics

Effect of a Small Amount of Thermoplastic Starch Blend on the Mechanical Recycling of Conventional Plastics

Synthetic Biopolymers and Their Composites: Advantages and Limitations—An Overview

End-of-Life Options for Bio-Based Plastics in a Circular Economy—Status Quo and Potential from a Life Cycle Assessment Perspective

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