Composites of Phormium tenax fibers in a poly(lactic acid) matrix with fiber content of up to 40 wt%, produced by injection molding and twin screw compounding, were characterized by scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and mechanical tests (static and dynamic). Thermal analysis showed that cold-crystallization peak shifted to lower temperatures with increasing fiber content, confirming that the addition of Phormium fiber has the effect of promoting crystallinity. Dynamic mechanical analysis (DMA) results showed that the addition of Phormium fiber did not affect significantly the T(g) of the polymer and the area under the tan delta decreased with the addition of Phormium fiber. Tensile modulus has been consistently increased by reinforcing the composite with growing amounts of fibers, whilst the effect on tensile strength is less evident. SEM micrographs of fracture surfaces allowed highlighting failure modes of the composites, which included a diffuse presence of fiber pull-out and debonding. POLYM. COMPOS., 32: 1362-1368, 2011. (C) 2011 Society of Plastics Engineers

Poly(lactic acid)/Phormium tenax composites: Morphology and thermo-mechanical behavior / DE ROSA, Igor Maria; A., Iannoni; J. m., Kenny; D., Puglia; Santulli, Carlo; Sarasini, Fabrizio; A., Terenzi. - In: POLYMER COMPOSITES. - ISSN 0272-8397. - STAMPA. - 32:9(2011), pp. 1362-1368. [10.1002/pc.21159]

Poly(lactic acid)/Phormium tenax composites: Morphology and thermo-mechanical behavior

DE ROSA, Igor Maria;SANTULLI, CARLO;SARASINI, Fabrizio;
2011

Abstract

Composites of Phormium tenax fibers in a poly(lactic acid) matrix with fiber content of up to 40 wt%, produced by injection molding and twin screw compounding, were characterized by scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and mechanical tests (static and dynamic). Thermal analysis showed that cold-crystallization peak shifted to lower temperatures with increasing fiber content, confirming that the addition of Phormium fiber has the effect of promoting crystallinity. Dynamic mechanical analysis (DMA) results showed that the addition of Phormium fiber did not affect significantly the T(g) of the polymer and the area under the tan delta decreased with the addition of Phormium fiber. Tensile modulus has been consistently increased by reinforcing the composite with growing amounts of fibers, whilst the effect on tensile strength is less evident. SEM micrographs of fracture surfaces allowed highlighting failure modes of the composites, which included a diffuse presence of fiber pull-out and debonding. POLYM. COMPOS., 32: 1362-1368, 2011. (C) 2011 Society of Plastics Engineers
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Poly(lactic acid)/Phormium tenax composites: Morphology and thermo-mechanical behavior / DE ROSA, Igor Maria; A., Iannoni; J. m., Kenny; D., Puglia; Santulli, Carlo; Sarasini, Fabrizio; A., Terenzi. - In: POLYMER COMPOSITES. - ISSN 0272-8397. - STAMPA. - 32:9(2011), pp. 1362-1368. [10.1002/pc.21159]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/415057
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