2016
DOI: 10.1016/j.jclepro.2016.03.029
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Comparative assessment of global warming impact and eco-efficiency of PS (polystyrene), PET (polyethylene terephthalate) and PLA (polylactic acid) boxes

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Cited by 78 publications
(45 citation statements)
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“…In the absence of this credit, all feedstock substitution pathways have higher emissions than the fossil plastic production pathways. Although the stored carbon credit is likely accurate for bioethylene plastics, recent evidence suggests that even when landfilled, PLA does not always act as a carbon sink [33,61], as previously assumed [6,62,63]. Furthermore there is ongoing debate about whether biogenic carbon should receive an emissions credit in the first place [64].…”
Section: Energy Substitution and Feedstock Substitution: Scale And Ghmentioning
confidence: 97%
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“…In the absence of this credit, all feedstock substitution pathways have higher emissions than the fossil plastic production pathways. Although the stored carbon credit is likely accurate for bioethylene plastics, recent evidence suggests that even when landfilled, PLA does not always act as a carbon sink [33,61], as previously assumed [6,62,63]. Furthermore there is ongoing debate about whether biogenic carbon should receive an emissions credit in the first place [64].…”
Section: Energy Substitution and Feedstock Substitution: Scale And Ghmentioning
confidence: 97%
“…Further, PLA will replace PP, but only in the subset of pathways where PLA has lower mean GHG emissions than PP. This is an optimistic, bounding case, since a) it is unlikely that PLA can substitute for all applications of PS, PET and PP, and b) it assumes PLA can substitute for fossil plastics on a 1:1 mass basis despite some evidence that PLA products may require a higher mass of plastic [26,33]. Since PHB is more expensive and has higher GHG emissions than Environ.…”
Section: Goal Scope and Life Cycle Model Overviewmentioning
confidence: 99%
“…En primer lugar, la gran superficie de tierra necesaria para cultivar las materias primas utilizadas en la producción del PLA podría llevar a algunos agricultores a cambiar la producción de alimentos, con menor rendimiento económico, por los cultivos utilizados en la manufactura del PLA. Esta situación amenazaría gravemente la sostenibilidad y el bienestar de los países en vías de desarrollo, y aumentaría de forma importante el impacto medioambiental de la producción del PLA [65,77]. En segundo lugar, hay que tener en cuenta el dilema moral de utilizar potenciales recursos alimentarios para la fabricación de plásticos, especialmente con los problemas de hambruna que experimentan algunos países en la actualidad [111].…”
Section: Planteamiento Del Problema Y Antecedentesunclassified
“…Sin embargo, los ensayos de DSC no permiten observar la mayor proporción de fase α' presente en el nanocomposite. 65 95 En cuanto al efecto del reciclado en los nanocomposites, en la Tabla 16 solo se puede observar una cristalinidad ligeramente mayor en el PLAR-C30 después de 2 días de inmersión, luego, conforme aumenta el tiempo los valores de cristalinidad del nanocomposite virgen y reciclado van acercándose progresivamente. Para explicar este comportamiento hay que considerar la mejora de la dispersión de la arcilla durante el reciclado.…”
Section: Tiempo (Días) Plav Plav-c30 Plav-ha Plav Plav-c30 Plav-haunclassified
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