Properties of Thermoplastic Corn Starch Based Green Composites Reinforced with Barley (Hordeum vulgare L.) Straw Particles Obtained by Thermal Compression

Silva-Guzmán, José Antonio; Anda, Raúl Rodríguez; Talavera, Francisco Javier Fuentes; Manríquez‐González, Ricardo; Lomelí-Ramírez, María Guadalupe

doi:10.1007/s12221-018-8023-4

Cited by 22 publications

(10 citation statements)

References 35 publications

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“…En cuanto a la tensión, esta fue mayor en función de la concentración del BZ en los CPM, lo cual es similar a lo citado por Silva et al (2018). Sin embargo, en las muestras expuestas a las pruebas de agar se observó un aumento igual en todas las concentraciones de BZ.…”

Section: Propiedades Mecánicasunclassified

“…Las propiedades físicas y mecánicas de los CPM son afectadas después de la exposición a intemperismo y biodegradación. Algunas de ellas, como la absorción de agua, contracción e hinchamiento, flexión estática, resis tencia a la tracción e impacto se utilizan para evaluar tales efectos (Fabiyi y McDonald, 2010;Silva et al 2018;Robledo-Ortíz et al, 2020;Córdova et al, 2020). En general, agregar harina de madera a la matriz plástica aumenta las propiedades del tablero mecánico (Lázaro et al, 2016a).…”

Section: Introductionunclassified

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Efecto del intemperismo y biodeterioro en compuestos plástico-madera (CPM) elaborados con borato de zinc

Oscanoa

Talavera

Ortiz

et al. 2020

RMCF

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Se evaluaron las propiedades físicas y mecánicas de compuestos plásticos de madera (CPM) elaborados con borato de zinc (BZ) y sometidos a tratamientos de intemperismo y biodeterioro. Se utilizaron concentraciones de BZ al 0, 1, 3 y 5 %; harina de madera de pino, malla 60 y polipropileno, en proporciones de 50/48, 50/47, 50/45 y 50/43, en función de la concentración de BZ. En todos los CPM, se adicionó 2 % de anhídrido maleico de polipropileno (MAPP) como agente acoplante. Los CPM se expusieron al intemperismo natural durante 6 meses y al biodeterioro con Gleophyllum trabeum (pudrición parda) y Trametes versicolor (pudrición blanca) mediante pruebas de agar (EN 350-1) y bloque suelo (ASTM D 2017-05). Se evaluaron las propiedades físicas de absorción e hinchamiento y las mecánicas de flexión estática, resistencia a la tracción y resistencia al impacto. Además de la alteración de la luminosidad y caracterización morfológica con microscopía electrónica de barrido (SEM). El borato de zinc no tuvo efecto en las propiedades mecánicas de los CPM sin tratamientos. Después del intemperismo, el BZ no incidió sobre la flexión estática y resistencia al impacto; aunque, se observó un efecto positivo en la resistencia a la tracción. En CPM expuestos a la biodegradación por hongos, el BZ influyó positivamente en la resistencia al impacto. Independiente de las bajas tasas de descomposición, el BZ fue eficaz contra la descomposición fúngica; las pérdidas de peso de los CPM expuestos en pruebas de agar y bloque de suelo no mostraron diferencias significativas.

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Section: Propiedades Mecánicasunclassified

Section: Introductionunclassified

Efecto del intemperismo y biodeterioro en compuestos plástico-madera (CPM) elaborados con borato de zinc

Oscanoa

Talavera

Ortiz

et al. 2020

RMCF

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“…Then, a pressure of 25 bar was applied for 14 min. Finally, the mold was cooled down with circulating water until it reached 50 °C (Silva-Guzmán et al 2018).…”

Section: Preparation Of Nanocomposites (Lmdpe-cnf) Processed By Thermocompressionmentioning

confidence: 99%

“…Secondly, there was a low quality of encapsulation of the incorporated particles in the thermoplastic matrix because, during the preparation of the composite, free pores or fault zones could be formed and help to facilitate the entry of water in the composite (Yamada et al 2009). Thirdly, results were affected by the amount of lignocellulosic material that is added because a larger percentage of incorporated hydrophilic reinforcement into the polymer matrix correlates with a greater the water absorption (Silva-Guzmán et al 2018). There seems to have been a lack of water absorption studies on nanocomposites having CNFs within hydrophobic matrices.…”

Section: Characterization Of Nanocomposites Water Absorption Studymentioning

confidence: 99%

Preparation and characterization of nanocomposites based on linear medium density polyethylene/cellulose nanofibers from Agave tequilana bagasse waste

Rendón

Valdez-Fausto

Hernández

et al. 2019

BioRes

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In the Mexican state of Jalisco, a significant amount of fibrous agave waste is generated from the tequila industry every year. The objective of this study was to establish the potential of obtaining cellulose nanofibers (CNF) from the bagasse waste of Agave tequilana, and then incorporate them into a linear medium density polyethylene matrix to obtain nanocomposites through the thermocompression process. These nanoparticles were used to prepare nanocomposites of the selected matrix, incorporating 1 to 5 wt% of CNF. All of the prepared composites had a low water absorption. Increases in tensile strength and in modulus and flexural properties occurred when the concentration of the CNF was augmented. However, in the case of nanocomposites with 5 wt%, a decrease in elongation was observed.

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“…The researchers found how the mechanical properties of barley straw reinforced materials were lower than wood fiber reinforced ones. Silva-Guzman et al researched the effect of barley straw on the mechanical properties of a corn starch polymer-based composite [34]. The authors observed a positive effect of the presence of the reinforcements on the strength and stiffness of the materials.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Barley Straw Fibers as Reinforcement in Fully Biobased Polyethylene Composites: Macro and Micro Mechanics of the Flexural Strength

et al. 2020

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Awareness on deforestation, forest degradation, and its impact on biodiversity and global warming, is giving rise to the use of alternative fiber sources in replacement of wood feedstock for some applications such as composite materials and energy production. In this category, barley straw is an important agricultural crop, due to its abundance and availability. In the current investigation, the residue was submitted to thermomechanical process for fiber extraction and individualization. The high content of holocellulose combined with their relatively high aspect ratio inspires the potential use of these fibers as reinforcement in plastic composites. Therefore, fully biobased composites were fabricated using barley fibers and a biobased polyethylene (BioPE) as polymer matrix. BioPE is completely biobased and 100% recyclable. As for material performance, the flexural properties of the materials were studied. A good dispersion of the reinforcement inside the plastic was achieved contributing to the elevate increments in the flexural strength. At a 45 wt.% of reinforcement, an increment in the flexural strength of about 147% was attained. The mean contribution of the fibers to the flexural strength was assessed by means of a fiber flexural strength factor, reaching a value of 91.4. The micromechanical analysis allowed the prediction of the intrinsic flexural strength of the fibers, arriving up to around 700 MPa, and coupling factors between 0.18 and 0.19, which are in line with other natural fiber composites. Overall, the investigation brightness on the potential use of barley straw residues as reinforcement in fully biobased polymer composites.

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Properties of Thermoplastic Corn Starch Based Green Composites Reinforced with Barley (Hordeum vulgare L.) Straw Particles Obtained by Thermal Compression

Cited by 22 publications

References 35 publications

Efecto del intemperismo y biodeterioro en compuestos plástico-madera (CPM) elaborados con borato de zinc

Efecto del intemperismo y biodeterioro en compuestos plástico-madera (CPM) elaborados con borato de zinc

Preparation and characterization of nanocomposites based on linear medium density polyethylene/cellulose nanofibers from Agave tequilana bagasse waste

Feasibility of Barley Straw Fibers as Reinforcement in Fully Biobased Polyethylene Composites: Macro and Micro Mechanics of the Flexural Strength

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