Poly (ethylene terephthalate) recycling for high value added textiles

Park, Sang Ho; Kim, Seong Hun

doi:10.1186/s40691-014-0001-x

Cited by 228 publications

(97 citation statements)

References 85 publications

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“…With the enormous development and usage of PET, a large fraction of PET gets added to the waste system on a yearly basis. The demand for nonbiodegradable PET in various applications has been increasing at an alarming rate [11,12]. Although PET is not hazardous, many factors contribute to the accumulation of PET in the environment and this necessitates serious attention to recycling as the accumulation has become a global environmental issue [2,13,14].…”

Section: Introductionmentioning

confidence: 99%

Reactive Extrusion of Polyethylene Terephthalate Waste and Investigation of Its Thermal and Mechanical Properties after Treatment

Mohsin

Abdulrehman

Haik

2017

International Journal of Chemical Engineering

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This study investigates treating polyethylene terephthalate (PET) waste water bottles with different mass of ethylene glycol (EG) using reactive extrusion technique at a temperature of 260 ∘ C. The study puts emphases on evaluating the thermal, mechanical, and chemical characteristics of the treated polyethylene terephthalate. The properties of the treated PET from the extruder were analyzed using FT-IR, TGA, DSC, and nanoindentation. The melt flow indexes (MFI) of both treated and untreated PET were also measured and compared. Thermal properties such as melting temperature ( ) for treating PET showed an inversely proportional behavior with the EG concentrations. The FT-IR analysis was used to investigate the formation of new linkages like hydrogen bonds between PET and EG due to the hydroxyl and carbonyl groups. Nanoindentation results revealed that both the mechanical characteristics, elastic modulus and hardness, decrease with increasing EG concentration. On the other hand, the melt flow index of treated PET exhibited an increase with increasing EG concentration in the PET matrix.

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Section: Introductionmentioning

confidence: 99%

Reactive Extrusion of Polyethylene Terephthalate Waste and Investigation of Its Thermal and Mechanical Properties after Treatment

Mohsin

Abdulrehman

Haik

2017

International Journal of Chemical Engineering

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“…The study of postconsumer PET waste (r‐PET) recycling processes, aiming at reducing environmental pollution and improving waste management, has received a lot of attention in the literature . r‐PET can be recycled by many approaches, including chemical and mechanical methods .…”

Section: Introductionmentioning

confidence: 99%

Effect of copolymers synthesized by nitroxide‐mediated polymerization as chain extenders of postconsumer poly(ethylene terephthalate) waste

Benvenuta‐Tapia

Vivaldo‐Lima

Guerrero‐Santos

2019

Polymer Engineering & Sci

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In this contribution, the use of glycidyl methacrylate and styrene copolymers synthesized by nitroxide‐mediated polymerization (NMP) as chain extenders of postconsumer poly(ethylene terephthalate) waste (r‐PET) is described. Our observations revealed that the copolymers synthesized by NMP act as efficient chain extenders for the regeneration of PET waste. Epoxide groups in the copolymers react with PET end reactive groups producing chain extended PET with higher molecular weight and improving performance. The increase in molecular weight of PET waste results in important improvement in both, elongation‐at‐break, and strength impact. r‐PET complex viscosity and rheological moduli are also greatly improved as the epoxide content in the chain extenders increases. The loss tangent and phase angle versus angular frequency plots for chain‐extended r‐PET reveal that melt elasticity is also improved. These results confirm that use of NMP‐synthesized copolymers is a plausible solution for the recycling of PET. POLYM. ENG. SCI., 59:2255–2264, 2019. © 2019 Society of Plastics Engineers

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“…The multilayer film is usually thin and consists of 3 or more overlapping films. The outer layer is the layer for design and printing; usually, polyamide or polyethylene terephthalate are used . The intermediate layer is a gas barrier layer, mainly aluminum or ethylene vinyl alcohol.…”

Section: Introductionmentioning

confidence: 99%

Improvements in the oxygen barrier property of polypropylene nanocomposites

Kim

Ryu

Kim

2018

Polymers for Advanced Techs

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A nanocomposite consisting of polypropylene (PP)/nanoclay (montmorillonite) was prepared by means of a melt-compounding process with the use of a twin-screw extruder. Because of the complex dispersion of polar and hydrophilic clays that have many cations in the nonpolar and hydrophobic PP, amino-silane was introduced to modify the surface of the clays. Also, to improve the compatibility of the modified nanoclay with PP, a PP-graft-maleic anhydride was used as a compatibilizer. From Fourier transform infrared spectroscopy analysis and the mechanical property test results, it was confirmed that the surface of the nanoclay was properly modified, and it was successfully dispersed in the PP matrix. The composite was investigated by electron microscopy to analyze its morphology and the degree of dispersion of the nanoclay. An analysis of oxygen permeability according to nanoclay content was performed, and it was found that the higher nanoclay content makes the decrease in oxygen permeability. In addition, a shelf-life test was carried out to determine the relationship between decreased oxygen permeability and food preservation performance. The preservation performance of the food package prepared with the resin made in this study was improved because of the improvement in mechanical properties and oxygen barrier property.

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Poly (ethylene terephthalate) recycling for high value added textiles

Cited by 228 publications

References 85 publications

Reactive Extrusion of Polyethylene Terephthalate Waste and Investigation of Its Thermal and Mechanical Properties after Treatment

Reactive Extrusion of Polyethylene Terephthalate Waste and Investigation of Its Thermal and Mechanical Properties after Treatment

Effect of copolymers synthesized by nitroxide‐mediated polymerization as chain extenders of postconsumer poly(ethylene terephthalate) waste

Improvements in the oxygen barrier property of polypropylene nanocomposites

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