Ramie (Boehmeria nivea (L.) Gaud.) and Spanish Broom (Spartium junceum L.) fibres for composite materials: agronomical aspects, morphology and mechanical properties

Angelini, Luciana Gabriella; Lazzeri, Andrea; Levita, G.; Fontanelli, D.; Bozzi, Chiara

doi:10.1016/s0926-6690(99)00059-x

Cited by 134 publications

(74 citation statements)

References 8 publications

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“…The presented results are similar to those found in literature i.e. with respect to the fi bre extraction procedure, the cellulose amount changes from 66.9 to 91.7% in the case of mechanical and physicochemical procedure, respectively (Cerchiara et al, 2010 B) or 74.1% as reported by Angelini et al (2000) for mechanically obtained fi bres. The same trend is valid for the lignin amount, which is always lower for the fi bers extracted by non-mechanical procedures.…”

Section: Rezultati I Diskusijasupporting

confidence: 91%

Extraction Methods of Spanish Broom (Spartium Junceum L.)

Katović

Antonović

2011

Drvna ind.

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Extraction Methods of Spanish Broom (Spartium Junceum L.)Metode ekstrakcije brnistre ili žuke (Spartium Junceum L.)Original scientifi c paper • Izvorni znanstveni rad Received -prispjelo: 28. 3. 2011. Accepted -prihvaćeno: 22. 11. 2011. UDK: 630*874 doi:10.5552/drind.2011.1112 ABSTRACT • Effects of different extraction methods of the Spanish Broom shoots were measured and compared with the purpose of obtaining composite material. The content of cellulose, lignin, pentosan and ash in the Spanish Broom fi bers was determined. SEM analyses were performed. Keywords: Spanish Broom fi bers, fi ber extraction, chemical composition, FTIR, MW SAŽETAK •

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Section: Rezultati I Diskusijasupporting

confidence: 91%

Extraction Methods of Spanish Broom (Spartium Junceum L.)

Katović

Antonović

2011

Drvna ind.

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“…In this sense, the tests of Angelini et al (2000) confirm that the original plant fibres represent a potential substitute for materials of non-organic origin. It is important to highlight that the chloride content of plastic wastes of cords give rise to high rates of pollution during incineration (Hedman et al, 2006).…”

Section: Introductionmentioning

confidence: 57%

“…The first is to require the farmers to separate the plastic from the plants at the greenhouse, but this is a labour-intensive operation. The second would be to use biodegradable cord from vegetable fibres (Angelini et al, 2000), which can be obtained near the greenhouse areas, to reduce the cost with respect to the price of plastic cords. In addition, if the biodegradable cords are accompanied by the practice of a more ecological type of agriculture (Dorais, 2007) with lower rates of agrochemical application, the vegetable remains would be easier to treat chemically and the final briquettes made for combustion could compete environmentally with the composting suggested by Anton et al (2005), the briquettes being a reusable product, as indicated by Munoz and Riley (2008).…”

Section: Discussionmentioning

confidence: 99%

Briquettes of plant remains from the greenhouses of Almería (Spain)

Callejón-Ferre¹,

López-Martínez

2009

Span. j. agric. res.

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Since ancient times, plant biomass has been used as a primary fuel, and today, with the impending depletion of fossil fuels, these vegetal sources constitute a cleaner alternative and furthermore have a multitude of uses. The aim of the present study is to design a method of recycling and reuse of plant wastes from intensive agriculture under plastic, by manufacturing briquettes in an environmentally friendly manner. In Almería (SE Spain), agriculture generates 769,500 t year -1 of plant remains from greenhouse-grown horticultural crops, a resource currently used for composting and for producing electricity. With the machinery and procedures of the present study, another potential use has been developed by detoxifying and eliminating the plastic wastes of the original biomass for the fabrication of briquettes for fireplaces. The results were slightly inferior to the commercial briquette from other non-horticultural plant materials (no forestry material), specifically 2512 kJ kg -1 , in the least favourable case. On the contrary, the heating value with respect to the two charcoals was significantly lower, with a difference of 12,142 kJ kg -1 . In conclusion; a procedure, applicable in ecological cultivation without agrochemicals or plastic cords, has been developed and tested to reuse and transform plant materials from intensive cultivation into a stable non-toxic product similar to composite logs, applicable in commercial settings or in residential fireplaces.Additional key words: biomass, contamination, horticulture, recycling. Resumen Briquetas de residuos vegetales procedentes de los invernaderos de Almería (España)Desde antaño, la biomasa vegetal se ha utilizado como combustible primario, es más, hoy en día con la disminución de combustibles fósiles es una alternativa más limpia que éstos y con multitud de usos. El objetivo de este trabajo es diseñar un método de reciclado y reutilización de residuos vegetales procedentes de la agricultura intensiva bajo plástico, mediante la fabricación de briquetas, todo ello respetando el medio ambiente. En Almería (sureste de España), la agricultura es capaz de generar 769.500 t año -1 de restos vegetales procedentes de cultivos hortícolas en invernadero, siendo usados actualmente para la obtención de electricidad y compost. Con la maquinaria y procedimientos del presente estudio se ha desarrollado otro posible uso, destoxificando y eliminando los residuos plásticos de la biomasa original para la fabricación de briquetas, y poder destinarlas para combustible de hogares. Los resultados son levemente inferiores a la briqueta comercial procedente de otro residuo vegetal hortícola (no forestal), concretamente de 2.512 kJ kg -1 , en el caso más desfavorable. Por el contrario, el poder calorífico respecto a los dos carbones comunes es significativamente menor, con una diferencia de 12.142 kJ kg -1 . En conclusión, se ha desarrollado y experimentado un procedimiento que permite reutilizar y transformar, a partir de métodos de cultivo ecológico sin agroquímicos y rafias ...

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“…Algumas destas fibras, que também apresentam um grande potencial para uso em compósitos, são típicas de regiões tropicais e, assim, de interesse para países asiáticos, africanos e latino-americanos. No Brasil, exemplos dessas fibras para reforço de compósitos poliméricos são a bucha (14) , a piaçava (15) , o curauá (16) e o rami (17)(18)(19)(20)(21) . No caso da fibra de rami, a principal vantagem é a sua resistência à tração, da ordem de 700 MPa (15) , comparável à das fibras mais resistentes de sisal e juta.…”

Section: Introductionunclassified

Ensaios De Impacto Izod Em Compósitos Poliméricos Reforçados Com Tecido De Rami

SImonassi¹,

Pereira²,

Monteiro³

2017

Anais Do Congresso Anual Da ABM

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ResumoFibras de rami (Boehmeria nivea) estão entre as lignocelulósicas naturais com potencial para utilização em compósitos poliméricos. O presente trabalho avalia a resistência ao impacto deste tipo de compósito. Corpos de prova normalizados foram confeccionados com percentuais de até 30% em volume de tecido de rami alinhadas ao longo de todo o comprimento. As fibras foram embutidas sob pressão em matriz de resina poliéster do tipo ortoftálica curada à temperatura ambiente por 24 horas. Os corpos de prova foram ensaiados em pêndulo de impacto Izod e as superfícies de fratura analisadas por microscopia eletrônica de varredura, MEV. A resistência ao impacto aumentou exponencialmente com a quantidade relativa de tecido de rami reforçando o compósito. Este desempenho foi associado à dificuldade de ruptura imposta pelas fibras bem como ao tipo de trincas resultantes da interação tecido de rami/matriz de poliéster que ajuda a absorver a energia do impacto. Palavras-chave: Rami; Compósitos, Poliéster, Impacto. IMPACT TESTS IN POLYESTER MATRIX COMPOSITES REINFORCED WITH RAMIE FIBERS AbstractRamie fibers (Boehmeria nivea) are among the natural lignocelulósicas potential for incorporation into polymeric composites. This work evaluates the impact resistance of this type of composite. Standard specimens were made with percentages of up to 30% by volume of ramie cloth. The fibers were embedded under pressure in type orthophtalic polyester resin cured at room temperature for 24 hours. The specimens were tested in an Izod impact pendulum and the fracture was examined by scanning electron microscopy, SEM. The impact resistance increased exponentially with the amount of reinforcing ramie cloth in the composite. This performance can be directly linked to the difficulty of rupture imposed by the fibers and the type of cracks resulting from the interaction of ramie cloth / matrix of polyester that helps to absorb the impact energy.

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Ramie (Boehmeria nivea (L.) Gaud.) and Spanish Broom (Spartium junceum L.) fibres for composite materials: agronomical aspects, morphology and mechanical properties

Cited by 134 publications

References 8 publications

Extraction Methods of Spanish Broom (Spartium Junceum L.)

Extraction Methods of Spanish Broom (Spartium Junceum L.)

Briquettes of plant remains from the greenhouses of Almería (Spain)

Ensaios De Impacto Izod Em Compósitos Poliméricos Reforçados Com Tecido De Rami

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