Thermoplastics Reinforced with Wood Fillers: A Literature Review

Błędzki, Andrzej K.; Reihmane, Skaidrīte; Gassan, Jochen

doi:10.1080/03602559808001373

Cited by 337 publications

(213 citation statements)

References 37 publications

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“…The absence of adhesion leaves this region weaker (Bledzki and Gassan, 1999;Bledzki et al, 1997;Felix and Gatenholm, 1991). Figure 6 shows the resistance to traction values for composites with different fibre percentages and grain sizes.…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Characterisation of a phenolic resin and sugar cane pulp composite

Leite

Pires

Souza

et al. 2004

Braz. J. Chem. Eng.

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-Polymeric materials are increasingly replacing metallic materials as a result of their properties. In this work a composite of phenolic resin and sugar cane pulp was developed. The sugar cane pulp has been previously alkalinised, dried, and milled and the particles had been classified in a range of grain sizes. Experimental assays were performed, varying the proportion of the resin and the reinforcement and the size of the cane pulp fibre, keeping the pressure and moulding temperature constant. These composites were characterised according to physical and chemical properties, through test bodies produced in moulds according to ASTM standards. The experiments performed showed that the use of sugar cane pulp as reinforcement in polymeric composites represents an option for reducing costs in industrial applications, thus suggesting a significant industrial applicability of the product.

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Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Characterisation of a phenolic resin and sugar cane pulp composite

Leite

Pires

Souza

et al. 2004

Braz. J. Chem. Eng.

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“…The nucleation ability of certain fillers is extremely high so that subsequent crystal growth is normal to the surface of fillers until the growing front is impeded by the growth of spherulites nucleated in the bulk. The character of interfaces between the filler and the matrix in composite materials has been widely regarded as the most important factor determining their mechanical properties [38,39]. Figure 7 shows selected photographs taken at 138°C after 12 min.…”

Section: Polarized Light Microscopy (Plm)mentioning

confidence: 99%

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Grząbka-Zasadzińska

Kłapiszewski

Bula

et al. 2016

J Therm Anal Calorim

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In this paper, amorphous silica Syloid 244 and kraft lignin were mechanically coupled. Four hybrid materials containing silica and lignin in ratios 1:1, 2:1, 5:1 and 20:1 were prepared. As reference samples for hybrid fillers pristine silica and lignin were used. Particle size determination and microscopic observations were applied to determine dispersive and morphological properties of hybrid fillers. Fourier transform infrared spectroscopy confirmed the effective preparation of silica/lignin hybrid materials. The parameters of porous structure of examined hybrid filler were determined using the multipoint Brunauer-Emmett-Teller method and Barrett-Joyner-Halenda algorithm. Composite samples of polylactide (PLA) containing 2.5 % (w/w) of hybrid filler were extruded. Optical microscopy, wide-angle X-ray scattering and differential scanning calorimetry were applied to specify the supermolecular structure of functional PLA/hybrid composites and analyze the crystallization parameters as well as the phase transformation in PLA matrix. Silica/lignin hybrid material was found to be a filler capable of an effective crystal nucleation. The nucleating ability of silica/lignin hybrid filler in PLA matrix is related to porous properties of filler and its composition.

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“…Provavelmente a estrutura morfológica semi-cristalina e a estrutura química da celulose contribuíram para uma fraca interação química entre as duas fases, sendo necessário a realização de tratamento na fibra para resultar em uma maior interação entre a celulose e a matriz, ou o emprego de um agente de acoplamento (BLEDZKI et al, 1998;GASSAN, 1999;PEREIRA et al, 2015). Resultados semelhantes foram obtidos por Furlan et al (2012) ao avaliarem as propriedades dos compósitos de PP reforçado com casca de aveia.…”

Section: Fibras Propriedades Em Tração Propriedades Em Flexãounclassified

“…Se a adesão não for perfeita, a grande probabilidade de se originar uma falha que leva o material à ruptura na região interfacial. A ausência de adesão torna esta região fraca (BLEDZKI et al, 1998;GASSAN, 1999;FELIX;GATENHOLM, 1991).…”

Section: Fibras Propriedades Em Tração Propriedades Em Flexãounclassified

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Compósitos De Polipropileno Reforçado Com Capim-Elefante

Caraschi

Prates

Leão

et al. 2015

Revista Brasileira De Engenharia De Biossistemas

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RESUMONos últimos anos tem surgido um grande interesse na utilização de fibras lignocelulósicas como material de reforço em compósitos poliméricos. Neste trabalho foram produzidos compósitos poliméricos de polipropileno com fibra de capim-elefante (Pennisetum purpureum Schum.) denominado (PP/Capim). O efeito do teor de carga e o envelhecimento acelerado sobre as propriedades mecânicas dos compósitos PP/Capim foram avaliados. Os compósitos foram preparados através do processo de extrusão de polipropileno com fibra de capim elefante na relação de 15 e 25% em massa. As amostras foram moldadas por processo de injeção de acordo com as normas American Society for Testing and Materials (ASTM). Na avaliação das propriedades de compósitos, os resultados obtidos mostraram que o aumento na quantidade de carga, resultou numa diminuição das propriedades mecânicas em tração e aumento do índice de fluidez, dureza Shore D e densidade. Quanto ao envelhecimento acelerado, os compósitos não apresentaram diferenças significativas são extremamente favoráveis quando comparado a outros sistemas comerciais reforçados por cargas inorgânicas. Palavras-chave:Fibras lignocelulósicas, Termoplástico, Capim-elefante. GRASS AS REINFORCEMENT OF POLYPROPYLENE ABSTRACTConsiderable interest has been generated in the use of lignocellulosic fibers as filler and reinforcements in polymeric composite. In this work polymeric composites were obtained from elephant grass fiber and polypropylene (PP/Grass). The effects of the content filler and accelerated aging on the mechanical properties of polypropylene composites reinforced with elephant grass fiber were evaluated. The composites were prepared through the extrusion process of polypropylene with grass fiber in ratio 15 and 25% wt. The specimens were injection molded according to American Society for Testing and Materials standards. In the evaluation of the composite properties, the obtained results noticed that increasing the filler amount resulted in a decrease of mechanical properties and increase in flow index, shore D hardness and density. The composites did not show significant differences as function of accelerated aging. The results showed that composite properties are extremely favorable when compared to other commercial systems reinforced by inorganic fillers.

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Thermoplastics Reinforced with Wood Fillers: A Literature Review

Cited by 337 publications

References 37 publications

Characterisation of a phenolic resin and sugar cane pulp composite

Characterisation of a phenolic resin and sugar cane pulp composite

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Compósitos De Polipropileno Reforçado Com Capim-Elefante

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