Melt Rheology and Crystallization Ability of Recycled PET Beverage Bottles

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Melt Rheology and Crystallization Ability of Recycled PET Beverage Bottles

Popis výsledku v původním jazyce

Rheological characterization of melts from recycled PET bottles was performed. Samples were prepared from repeatedly processed pellets of recycled PET bottles and their blends also with virgin bottle grade PET granulate using the twin screw extruder. Thematerials resulted were measured on a rotational rheometer in the dynamic mode. The data of recycled PET (h*, G´, G´´) were compared with characteristics of virgin bottle-grade PET and the degree of degradation (decrease in molecular weight) was evaluated from dynamic and intrinsic viscosity decrease. The knowledge of this degradation enables to predict a possibility of multi-processing and further recycling or applications of the material. Glass transition (Tg) temperature, cold-crystallization, 1st melting and final crystallinity, crystallization in dynamic mode (linear decrease of temperature), 2nd melting and crystallinity of virgin bottle-grade and recycled PET were compared. Crystallinity was evaluated from the calorimetric and a

Název v anglickém jazyce

Melt Rheology and Crystallization Ability of Recycled PET Beverage Bottles

Popis výsledku anglicky

Rheological characterization of melts from recycled PET bottles was performed. Samples were prepared from repeatedly processed pellets of recycled PET bottles and their blends also with virgin bottle grade PET granulate using the twin screw extruder. Thematerials resulted were measured on a rotational rheometer in the dynamic mode. The data of recycled PET (h*, G´, G´´) were compared with characteristics of virgin bottle-grade PET and the degree of degradation (decrease in molecular weight) was evaluated from dynamic and intrinsic viscosity decrease. The knowledge of this degradation enables to predict a possibility of multi-processing and further recycling or applications of the material. Glass transition (Tg) temperature, cold-crystallization, 1st melting and final crystallinity, crystallization in dynamic mode (linear decrease of temperature), 2nd melting and crystallinity of virgin bottle-grade and recycled PET were compared. Crystallinity was evaluated from the calorimetric and a

Druh

D - Stať ve sborníku

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Journal of Colloid and Interfaces Science - Eighteenth Annual Meeting, Guimaraes, Potruga

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

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Název nakladatele

Polymer Processing Society

Místo vydání

Guimaraes, Portugal

Místo konání akce

Guimaraes, Portugal

Datum konání akce

16. 6. 2002

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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