Mechanical properties of polypropylene/natural fiber composites: Comparison of wood fiber and cotton fiber

Kim, Sam-Jung; Moon, Jin-Bok; Kim, Gue‐Hyun; Ha, Chang‐Sik

doi:10.1016/j.polymertesting.2008.06.002

Cited by 221 publications

(107 citation statements)

References 15 publications

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“…Un total de diez muestras para cada formulación fueron fabricadas con un 3% de contenido de humedad, utilizando una temperatura de tornillo de inyección de 190ºC en las seis estaciones y una presión máxima de moldeo de 12 MPa (122 kg/cm 2 ). Todas las probetas presentaron la misma orientación de las partículas dentro de la matriz, debido a que los contenedores utilizados como muestras fueron obtenidos bajo las mismas condiciones de procesamiento, además, las probetas para la determinación de las propiedades fueron obtenidas de la misma zona de cada contenedor, para anular la posible variabilidad de la mezcla generada durante el proceso de fabricación (Kim et al 2008).…”

Section: Obtención Del Compuestounclassified

EFECTOS DEL CONTENIDO DE HARINA DE CORTEZA Y MADERA DE Pinus radiata SOBRE LA BIODEGRADACIÓN ACELERADA DE COMPUESTOS MADERA-PLÁSTICO

Moya-Villablanca

Oses-Pedraza

Poblete-Wilson

et al. 2014

Maderas, Cienc. tecnol.

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RESUMENSe evaluaron distintas formulaciones de compuestos fabricados en base a polietileno de baja densidad reciclado (PEr) y harinas tanto de corteza como de madera de Pinus radiata, mediante ensayos estandarizados de biodegradación acelerada. Los compuestos tipo Wood Plastic Composites (WPCs) fueron obtenidos mediante moldeo por inyección sin aditivos químicos, a partir de las siguientes mezclas entre PEr-harina en distintas proporciones: 100-0%, 80-20%; 60-40% y 40-60 %. Los ensayos de biodegradación acelerada fueron realizados de acuerdo a la norma ASTM D-2017, bajo condiciones controladas durante 3 meses, usando dos tipos de hongos degradadores, un hongo de pudrición café (Gloeophyllum trabeum) y por un hongo de pudrición blanca (Pleurotus ostreatus). Al término del período de biodegradación se determinó el porcentaje de pérdida de peso de cada tipo de compuesto. Los resultados indicaron que la pérdida de peso de los compuestos aumenta conforme aumenta la proporción de harina en la mezcla, siendo significativamente mayor con el hongo de pudrición café (Gt), más que con el hongo de pudrición blanca (Po). Independientemente del tipo de hongo utilizado, la harina de corteza presentó mayor susceptibilidad a la degradación en comparación con la harina de madera. Palabras claves:Compuestos, biodegradación acelerada, harina de madera y corteza. ABSTRACTComposites of wood and bark of Pinus radiata-recycled low polyethylene (RLPE) were submitted to accelerated decay using white and brown rot fungi. These WPCs were obtained by injection molding without chemical additives at proportions: 100-0%, 80-20%, 60-40% and 40-60%. Accelerated decay tests were conducted according to ASTM D-2017-05, using a brown rot fungus (Gloeophyllum trabeum) and a white rot fungus (Pleurotus ostreatus), during 3 months, under controlled conditions. After that, percentage of weight loss of each type of composite was determined. The results shown that the biodegradation of composites increased with increasing of flour in the mixture being higher in brown rot fungus (Gt) than in white rot fungus (Po) treatment. Bark flour had higher susceptibility to biodegradation in comparison with the wood flour.

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Section: Obtención Del Compuestounclassified

EFECTOS DEL CONTENIDO DE HARINA DE CORTEZA Y MADERA DE Pinus radiata SOBRE LA BIODEGRADACIÓN ACELERADA DE COMPUESTOS MADERA-PLÁSTICO

Moya-Villablanca

Oses-Pedraza

Poblete-Wilson

et al. 2014

Maderas, Cienc. tecnol.

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“…Recently, characterization and properties of several natural fibers such as hemp, flax, jute, linen, kenaf, oil palm, and bamboo [4][5][6][7][8][9][10][11][12] have been explored in order to find their potential in numerous applications, for example, automobiles, furniture, packing, and construction. There are certain properties like viscoelastic and viscoplastic properties, timedependent behavior due to creep and fatigue, tribological properties, and so forth, where less attention has been devoted by the material designers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Content on Abrasive Wear Behavior of Date Palm Leaf Reinforced Polyvinyl Pyrrolidone Composite

Mohanty

Das

2014

ISRN Tribology

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The effect of fiber contents on wear behavior of date palm leaf reinforced polyvinyl pyrrolidone (PVP/DPL) composites has been experimentally investigated. The test samples with fillers in 10, 20, 30, and 40% based on weight of fibers were prepared using injection molding. The optimum fiber content (i.e., 26 wt%) for maximum mechanical strength of the composites was determined by regression analysis. The dry sliding wear tests were conducted for each composition at different sliding velocities (0.392, 0.471, and 0.549 m/s) and sliding distances (188, 254, and 376 m) by applying normal loads of 5, 10, 15, and 20 N using pin-on-disc wear testing machine. The specific wear rate, wear loss, and coefficient of friction were plotted against the normal load and sliding distance at all sliding velocities. The results reveal that incorporation of date palm leaf fibers leads to significant improvement in the wear resistance of composites up to optimum fiber content and then decreases as fiber content increases. Further, it is found that surface modification has significant effect on wear performance. Worn surfaces of some selected samples were studied by scanning electron microscopy to analyze the wear mechanism.

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“…One of the main difficulties when dealing with natural composites is the adhesion between fibres and matrices 4,5 , mainly due to the hydrophilic and hydrophobic characteristics showed by the fibres and the polymers, respectively. However, the chemical affinity between the cellulose and the polymeric matrix can be improved by the modification of the fibre surface 6,7 or the polymer [8][9][10][11] , using chemical additives like maleic anhydride.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical analysis of hybrid composites reinforced with unidirectional natural fibres, silica microparticles and maleic anhydride

et al. 2012

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The work describes the analytical and experimental characterisation of a class of polymeric composites made from epoxy matrix reinforced with unidirectional natural sisal and banana fibres with silica microparticles and maleic anhydride fabricated by manual moulding. The analytical models, ROM rule of mixtures and Halpin-Tsai approach, have been used in conjunction with a Design of Experiments (DOE) analysis from tensile tests carried out on 24 different composites architectures. The following experimental factors were analyzed in this work: type of fibres (sisal and banana fibres), volume fraction of fibres (30% and 50%) and modified matrix phase by adding silica microparticles (0%wt, 20%wt and 33%wt) and maleic anhydride (0%wt and 2%wt). The ROM approach has shown a general good agreement with the experimental data for composites manufactured with 30%vol of natural fibres, which can be attributed to the strong adhesion found between the phases. On the opposite, the semi empirical model proposed by Halpin and Tsai has shown greater fidelity with composites manufactured from 50%vol of natural fibres, which exhibit a weak interfacial bonding. The addition of microsilica and maleic anhydride in the system did not enhance the adhesion between the phases as expected.

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Mechanical properties of polypropylene/natural fiber composites: Comparison of wood fiber and cotton fiber

Cited by 221 publications

References 15 publications

EFECTOS DEL CONTENIDO DE HARINA DE CORTEZA Y MADERA DE Pinus radiata SOBRE LA BIODEGRADACIÓN ACELERADA DE COMPUESTOS MADERA-PLÁSTICO

EFECTOS DEL CONTENIDO DE HARINA DE CORTEZA Y MADERA DE Pinus radiata SOBRE LA BIODEGRADACIÓN ACELERADA DE COMPUESTOS MADERA-PLÁSTICO

Effect of Fiber Content on Abrasive Wear Behavior of Date Palm Leaf Reinforced Polyvinyl Pyrrolidone Composite

Micromechanical analysis of hybrid composites reinforced with unidirectional natural fibres, silica microparticles and maleic anhydride

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