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Materials 2015, 8(10), 7106-7117; doi:10.3390/ma8105360

Effect of Extrusion on the Mechanical and Rheological Properties of a Reinforced Poly(Lactic Acid): Reprocessing and Recycling of Biobased Materials

1
Fundación Aitiip, Polígono Industrial Empresarium C/Romero Nº 12, Zaragoza 50720, Spain
2
Tecnopackaging S.L., Polígono Industrial Empresarium C/Romero Nº 12, Zaragoza 50720, Spain
3
Escuela de Ingeniería y Arquitectura, University of Zaragoza, Av. Maria de Luna, 3, Zaragoza 50018, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Macro Morreale
Received: 21 August 2015 / Revised: 2 October 2015 / Accepted: 12 October 2015 / Published: 19 October 2015
(This article belongs to the Special Issue Green Composites)
View Full-Text   |   Download PDF [4114 KB, uploaded 19 October 2015]   |  

Abstract

The aim of this research paper is to study the behaviour of a common used biopolymer (Poly(Lactic Acid) (PLA)) after several reprocesses and how two different types of additives (a melt strength enhancer and a nanoadditive) affect its mechanical and rheological properties. Systematic extraction of extrudate samples from a twin-screw compounder was done in order to study the effect in the properties of the reprocessed material. Detailed rheological tests on a capillary rheometer as well as mechanical studies on a universal tensile machine after preparation of injected specimens were carried out. Results evidenced that PLA and reinforced PLA materials can be reprocessed and recycled without a remarkable loss in their mechanical properties. Several processing restrictions and specific phenomena were identified and are explained in the present manuscript. View Full-Text
Keywords: polylactic acid; nanocomposites; nanoadditive; melt strength enhancer; reprocess; rheology; mechanical; viscosity; extrusion compounding polylactic acid; nanocomposites; nanoadditive; melt strength enhancer; reprocess; rheology; mechanical; viscosity; extrusion compounding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Peinado, V.; Castell, P.; García, L.; Fernández, Á. Effect of Extrusion on the Mechanical and Rheological Properties of a Reinforced Poly(Lactic Acid): Reprocessing and Recycling of Biobased Materials. Materials 2015, 8, 7106-7117.

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