Recycling of a post-industrial printed multilayer plastic film containing polyurethane inks by solvent-targeted recovery and precipitation

Sánchez-Rivera, Kevin L.; Munguía-López, Aurora del Carmen; Zhou, Panzheng; Cecon, Victor S.; Yu, Jicheng; Nelson, Kevin Michael; Miller, Daniel; Grey, Steve; Xu, Zhuo; Bar‐Ziv, Ezra; Vorst, Keith; Curtzwiler, Greg W.; Lehn, Reid C. Van; Zavala, Ví­ctor M.; Huber, George W.

doi:10.1016/j.resconrec.2023.107086

Cited by 16 publications

(20 citation statements)

References 37 publications

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“…Other studies have also concluded that the solvent based dissolution–precipitation process can be economically feasible at a capacity higher than 5000–6000 MT per year. 23,24…”

Section: Resultsmentioning

confidence: 99%

“…19 del Carmen Munguía-López et al 22 conducted LCA of STRAP process, reporting greenhouse gas (GHG) emissions and energy demand along with other LCA indicators. Sánchez-Rivera et al 23 studied TEA and LCA of STRAP process for post-industrial multi-layer colored film with polymers recovery via cooling approach. Their study 23 used gamma-valerolactone (GVL) solvent for selectively removing polyurethane (PU)-based ink, but without dissolving PET.…”

Section: Introductionmentioning

confidence: 99%

“…Sánchez-Rivera et al 23 studied TEA and LCA of STRAP process for post-industrial multi-layer colored film with polymers recovery via cooling approach. Their study 23 used gamma-valerolactone (GVL) solvent for selectively removing polyurethane (PU)-based ink, but without dissolving PET. It was concluded that the STRAP process had lower environmental impacts than virgin polymer films 22,23 and could be economically feasible at a processing capacity higher than 6000 MT per year.…”

Section: Introductionmentioning

confidence: 99%

“…Their study 23 used gamma-valerolactone (GVL) solvent for selectively removing polyurethane (PU)-based ink, but without dissolving PET. It was concluded that the STRAP process had lower environmental impacts than virgin polymer films 22,23 and could be economically feasible at a processing capacity higher than 6000 MT per year. 23 Yu et al 24 conducted TEA and LCA of the STRAP process for polypropylene based (PP) disposable face masks with polymer recovery via a cooling approach.…”

Section: Introductionmentioning

confidence: 99%

“…It was concluded that the STRAP process had lower environmental impacts than virgin polymer films 22,23 and could be economically feasible at a processing capacity higher than 6000 MT per year. 23 Yu et al 24 conducted TEA and LCA of the STRAP process for polypropylene based (PP) disposable face masks with polymer recovery via a cooling approach. The majority of the above-mentioned studies on STRAP processes looked at multi-layer films containing PET along with other resins such as polyethylene (PE), ethylene vinyl alcohol (EVOH), and ethylene vinyl acetate (EVA).…”

Section: Introductionmentioning

confidence: 99%

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Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Chaudhari,

Kulas,

Peralta

et al. 2023

RSC Sustain.

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“…Other studies have also concluded that the solvent based dissolution–precipitation process can be economically feasible at a capacity higher than 5000–6000 MT per year. 23,24…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Chaudhari,

Kulas,

Peralta

et al. 2023

RSC Sustain.

View full text Add to dashboard Cite

show abstract

Compositional analysis of multilayered plastic constituents and constituent mixtures using benchtop ¹H NMR spectroscopy

Senthil Kumar,

Noh,

Bachmann

et al. 2024

Magnetic Reson in Chemistry

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Multilayered plastics are widely used in food packaging and other commercial applications due to their tailored functional properties. By layering different polymers, the multilayered composite material can have enhanced mechanical, thermal, and barrier properties compared to a single plastic. However, there is a significant need to recycle these multilayer plastics, but their complex structure offers significant challenges to their successful recycling. Ultimately, the use and recycling of these complex materials requires the ability to characterize the composition and purity as a means of quality control for both production and recycling processes. New advances and availability of low‐field benchtop 1H NMR spectrometers have led to increasing interest in its use for characterization of multicomponent polymers and polymer mixtures. Here, we demonstrate the capability of low‐field benchtop 1H NMR spectroscopy for characterization of three common polymers associated with multilayered packaging systems (low‐density polyethylene [LDPE], ethylene vinyl alcohol [EVOH], and Nylon) as well as their blends. Calibration curves are obtained for determining the unknown composition of EVOH and Nylon in multilayered packaging plastics using both the EVOH hydroxyl peak area and an observed peak shift, both yielding results in good agreement with the prepared sample compositions. Additionally, comparison of results extracted for the same samples characterized by our benchtop spectrometer and a 500‐MHz spectrometer found results to be consistent and within 2 wt% on average. Overall, low‐field benchtop 1H NMR spectroscopy is a reliable and accessible tool for characterization of these polymer systems.

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Understanding intentionally and non-intentionally added substances and associated threshold of toxicological concern in post-consumer polyolefin for use as food packaging materials

Tumu,

Vorst,

Curtzwiler

2024

Heliyon

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Recycling of a post-industrial printed multilayer plastic film containing polyurethane inks by solvent-targeted recovery and precipitation

Cited by 16 publications

References 37 publications

Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Compositional analysis of multilayered plastic constituents and constituent mixtures using benchtop ¹H NMR spectroscopy

Understanding intentionally and non-intentionally added substances and associated threshold of toxicological concern in post-consumer polyolefin for use as food packaging materials

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Recycling of a post-industrial printed multilayer plastic film containing polyurethane inks by solvent-targeted recovery and precipitation

Cited by 16 publications

References 37 publications

Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Solvent based dissolution–precipitation of waste polyethylene terephthalate: economic and environmental performance metrics

Compositional analysis of multilayered plastic constituents and constituent mixtures using benchtop 1H NMR spectroscopy

Understanding intentionally and non-intentionally added substances and associated threshold of toxicological concern in post-consumer polyolefin for use as food packaging materials

Contact Info

Product

Resources

About

Compositional analysis of multilayered plastic constituents and constituent mixtures using benchtop ¹H NMR spectroscopy