Ecoprofiles of Recycled Polymers at a Glance

Francis, Raju; Sivadas, Anjaly

doi:10.1002/9783527689002.ch9

Cited by 10 publications

(18 citation statements)

References 79 publications

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“…However, this process is destructive and does not facilitate a close-loop life-cycle for plastic materials. In addition, while efficient processes have been developed, sophisticated purification and process controls are needed to ensure that the hazardous substances are not released into the atmosphere . Nevertheless, it is the most suitable way for dealing with highly mixed plastics …”

Section: End-of-use Optionsmentioning

confidence: 99%

“…Solvolysis using water, methanol, and glycol has been the most common chemical recycling strategy for step-growth polyesters and polycarbonates. , A number of companies have implemented PET depolymerization at pilot or commercial level, including Loop Industries, Carbios, Ioniqa, and Gr3n Project . Different solvolysis processes of PETs and bisphenol A (BPA)-type PCs have been developed to recover suitable monomers for the production of new PETs and PCs. , However, the industrial applications of this recycling approach are quite limited due to the higher cost of recycled monomers compared to virgin feedstocks.…”

Section: End-of-use Optionsmentioning

confidence: 99%

“…In the United States in 2014, over 75% of plastics wastes were landfilled, with the remainder being either recycled (primarily HDPE and PET) or incinerated. , However, the amount of landfill space available for discarded plastic wastes is finite. Incineration of recovered plastic provides a potential source of energy but generates CO 2 ; moreover, rigorous purification and process controls are needed to ensure that the hazardous substances are not released into the atmosphere . Petroleum-based thermoplastics such as PET and HDPE are currently recycled on a large scale through a sorting, melting, reprocessing process into useful products .…”

Section: Introductionmentioning

confidence: 99%

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Catalysis as an Enabling Science for Sustainable Polymers

et al. 2017

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The replacement of current petroleum-based plastics with sustainable alternatives is a crucial but formidable challenge for the modern society. Catalysis presents an enabling tool to facilitate the development of sustainable polymers. This review provides a system-level analysis of sustainable polymers and outlines key criteria with respect to the feedstocks the polymers are derived from, the manner in which the polymers are generated, and the end-of-use options. Specifically, we define sustainable polymers as a class of materials that are derived from renewable feedstocks and exhibit closed-loop life cycles. Among potential candidates, aliphatic polyesters and polycarbonates are promising materials due to their renewable resources and excellent biodegradability. The development of renewable monomers, the versatile synthetic routes to convert these monomers to polyesters and polycarbonate, and the different end-of-use options for these polymers are critically reviewed, with a focus on recent advances in catalytic transformations that lower the technological barriers for developing more sustainable replacements for petroleum-based plastics.

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Section: End-of-use Optionsmentioning

confidence: 99%

Section: End-of-use Optionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalysis as an Enabling Science for Sustainable Polymers

et al. 2017

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“…Hardness and impact strength (8,9) Carbon nanotubes (CNTs) Thermal stability and tensile strength (10,11) Zinc Oxide (ZnO) Rheological and photodegradation (12,13) Silica (SiO2) Thermal and electrical conductivity (14,15) Boehmite Alumina(BAL) Mechanical and thermal (16,17) Graphene (GN) Mechanical and electrical (18) change of the molecular weight distribution (MWD) and formation of oxygenated functional groups. Hence, the properties of the recycled polymer (rheological, mechanical, etc.)…”

Section: Nanofillermentioning

confidence: 99%

“…Furthermore, the quantitative analysis of interfacial adhesion, in prepared nanocomposites from waste polymers, showed a strong interfacial adhesion between the nanoparticles and waste polymers and justified the recycling of polymers via the incorporation of nanoparticles (3). In the last few years, many researchers have used nanofillers to recycle waste PP polymers (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). These studies investigating polymer recycling via the incorporation of nanofillers with improved nanocomposites' properties are reported in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of recycled PP polymers by nanoparticles incorporation

Zdiri

Elamri

Hamdaoui

et al. 2018

Green Chemistry Letters and Reviews

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Recycling process seems to be the most efficient way to reduce ecological impacts of used polymers. Nevertheless, the properties of the recycled PP polymer are proved to be insufficient during its reuse, particularly with regard to its thermo-mechanical and rheological behaviors. The incorporation of nanoparticles as fillers into polymer matrix seems to be one of the most successful solutions to upgrade recycled PP polymer. This paper presents an overview on the application of different nanofillers such as clay, calcium carbonate (CaCO 3), Silica (SiO 2), Zinc Oxide (ZnO), carbon black (CB), carbon nanotubes (CNT), antioxidizers and others into recycled PP matrix. Literature works on the effects of nanofillers on obtained nanocomposites are extensively studied. The first section deals with PP recycling and its impact on thermal, mechanical and rheological properties of the polymer. Then, the second part summarizes recent studies on the effects of nanoparticles incorporation on thermo-mechanical and rheological properties of recycled PP. Finally, recyclability of PP-based nanocomposites is discussed.

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Recycling of poly(lactic acid)/poly(butylene succinate) (PLA/PBS) blends with high amounts of secondary raw material

Koca,

Aversa,

Barletta

2023

J of Applied Polymer Sci

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In this study, the mechanical recycling of poly(lactic acid)/poly(butylene succinate) (PLA/PBS)‐based formulations with additives was investigated. A simulation of mechanical recycling was performed using secondary raw materials in the analyzed formulations (at very high levels >30%). The recycling process was simulated by repeating extrusion cycles on the compound to produce aging under accelerated conditions, similar to those that normally occur during the extrusion compounding of the bioplastic material. The formulations were characterized by using differential scanning calorimetry (DSC), heat deflection temperature (HDT), melt flow rate (MFR), Fourier transform infrared spectroscopy (FTIR) and UV–vis spectroscopy. The aim of the work was to study the efficiency of a multi‐epoxy chain extender in mechanical recycling of PLA/PBS blends. The results showed that the use of secondary raw materials did not cause drastic changes in the thermal properties and chemical composition of the blends, which indicates that they are suitable for manufacturing bioplastic blends. Specifically, MFR results showed a major efficiency of the chain extender in samples having PLA as primary polymeric phase, whereas no change was observed in formulations where PBS is the main phase with the addition of a higher amount of chain extender.

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Ecoprofiles of Recycled Polymers at a Glance

Cited by 10 publications

References 79 publications

Catalysis as an Enabling Science for Sustainable Polymers

Catalysis as an Enabling Science for Sustainable Polymers

Reinforcement of recycled PP polymers by nanoparticles incorporation

Recycling of poly(lactic acid)/poly(butylene succinate) (PLA/PBS) blends with high amounts of secondary raw material

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