Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid)

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.contributor	Universitat Politècnica de Catalunya. POLYCOM - Polimers i compòsits: tecnologia
dc.contributor.author	Nascimento, L.
dc.contributor.author	Gamez Pérez, José
dc.contributor.author	Santana Pérez, Orlando Onofre
dc.contributor.author	Velasco Perero, José Ignacio
dc.contributor.author	Maspoch Rulduà, Mª Lluïsa
dc.contributor.author	Franco Urquiza, Edgar Adrian
dc.date	2010-12
dc.identifier.citation	Nascimento, L. [et al.]. Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid). "Journal of polymers and the environment", Desembre 2010, vol. 18, núm. 4, p. 654-660.
dc.identifier.citation	1566-2543
dc.identifier.citation	10.1007/s10924-010-0229-5
dc.identifier.uri	http://hdl.handle.net/2117/10767
dc.language.iso	eng
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject	Biopolymers--Fracture
dc.subject	Crystallization
dc.subject	Biopolímers -- Fractura
dc.title	Effect of the recycling and annealing on the mechanical and fracture properties of poly(lactic acid)
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The aim of this work is to evaluate the use of Poly(lactic acid)(PLA) industrial waste as a source of raw material for certain applications, as well to understand the effects of the annealing on the fracture behaviour of PLA. PLA waste has been simulate by an initial step of extrusion in a single screw extruder and pelletizing. Specimens of virgin and reprocessed PLA were obtained by injection molding. An anneling treatment capable of increasing the percentage of cristallinity (determined by differential scanning calorimetry) was also analyzed in reprocessed and non reprocessed specimens. The fracture behaviour was studied at slow and high testing speed, applying the linear elastic fracture mechanics (LEFM) on single edge notched bend (SENB) specimens. This study revealed that the fracture toughness of the reprocessed PLA was basically the same that the virgin PLA and also that the increase in the crystalline fraction produced an improvement on the fracture toughness, at slow loagind rate.
dc.description.abstract	Peer Reviewed

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