Influence of a Catalyst in Obtaining a Post-consumer Pet-Based Alkyd Resin that Meets Circular Economy Principles

Senra, Elaine M.; Silva, Antônio E. F. A. da; Visconte, Leila L. Y.; Silva, Ana L. N.; Pacheco, Élen Beatriz Acordi Vasques

doi:10.1007/s10924-022-02471-9

Cited by 2 publications

(2 citation statements)

References 69 publications

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“…Various composites and both epoxy and alkyd resins have been constructed by combining precursors directly with rPET in order to tune mechanics and barrier properties. − rPET has also been used in non-solvent-induced phase separation to prepare nanoporous membranes for filtration applications . Very recently, rPET has been converted chemically into porous carbon intended for CO 2 capture, potentially contributing simultaneously to plastic waste reduction and reduction of atmospheric carbon levels .…”

Section: Direct Upcycling To Performance Enhanced Polymeric Materialsmentioning

confidence: 99%

Trends in Polyester Upcycling for Diversifying a Problematic Waste Stream

2023

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We are facing a rapidly growing plastic pollution crisis, which is adversely affecting communities and ecosystems across the globe. Polymer scientists have an urgent obligation to develop and implement strategies for reutilizing plastic waste streams instead of continually relying on virgin feedstocks in plastic manufacturing. Postconsumer and postindustrial plastic items should be treated as valuable resources instead of discarding them. In order to do this, technological outlets must be developed to produce renewed materials using plastic waste as an input. Polyesters represent one of the largest plastic waste streams because they are commonly used in single-use beverage and food containers as well as textiles. Polyesters are also ideal candidates to exploit through chemical diversification, owing to the wide variety of functional derivatives that can be synthetically accessed via ester reactivity. This work highlights some recent developments related to diversifying polyester waste, with a focus on poly(ethylene terephthalate) (PET) as waste stream. The strategies encompass the production of both valuable small molecules prepared via degradation of PET and high-performance polymeric scaffolds derived from reactions with PET. Taking the recent ingenuity into consideration, based on these technological developments, an outlook is provided for the future of polyester waste streams. What are the next steps that are needed? Where are these trends headed? What gaps still exist, particularly with respect to assessment of sustainability and life cycle analysis? Collectively considering the examples highlighted here, there is great promise in the field of reutilizing waste streams as feedstocks for value-added materials.

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Section: Direct Upcycling To Performance Enhanced Polymeric Materialsmentioning

confidence: 99%

Trends in Polyester Upcycling for Diversifying a Problematic Waste Stream

2023

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“…This contradicts the objective of production cost reduction, where demand for more expensive traditional oil could be reduced. Also, the alcoholysis stage in alkyd resin production is normally catalyzed by Brønsted bases such as lithium, sodium hydroxides, calcium, and lead oxides [17,18]. Lead oxide was reported to be detrimental to the production of bright coloured resins [17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of alkyd resins from rubber seed/soybean oil blends

Elabor,

Ikhuoria,

Bakare2

et al. 2023

Nig. J. Tech.

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The polymerization and properties of environmentally friendly resin binders applicable in the surface-coating industry were studied. Rubber seed oil (RSO) and RSO blended with 10% and 20% soybean oil (SBO)-based alkyd resins were synthesized by alcoholysis- polyesterification of the oil with glycerol and phthalic anhydride. Physicochemical properties (such as colour, specific gravity, acid value, saponification value, iodine value, and drying schedule) of the alkyd resins were determined to establish the possible industrial potential of the resins. The saponification value and iodine value ranged from 250.19 mgKOH/g to 279.55 mgKOH/g and 29.58 gI2/100g to 33.77 gI2/100g respectively. The drying schedule and chemical resistance of the blended alkyd resins to water, salts, acids, and alkalis were also studied. The blended resins were found to be resistant to water, salt, and acid media, except for alkali media. The colour properties were enhanced as the percentage of the blend increased. FT-IR spectroscopic study of the oil and alkyd resin samples further corroborates our findings. Therefore, the potential of rubber seed oil blended with soybean oil to produce light-coloured alkyd resins could be exploited as raw materials for the Nigerian surface coating industry.

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Influence of a Catalyst in Obtaining a Post-consumer Pet-Based Alkyd Resin that Meets Circular Economy Principles

Cited by 2 publications

References 69 publications

Trends in Polyester Upcycling for Diversifying a Problematic Waste Stream

Trends in Polyester Upcycling for Diversifying a Problematic Waste Stream

Synthesis and characterization of alkyd resins from rubber seed/soybean oil blends

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