Soil Biodegradation of PHBV/Peach Palm Particles Biocomposites

Batista, Ketlin Cristina; Silva, D. A. K.; Coelho, Luci Boa Nova; Pezzin, Sérgio Henrique; Pezzin, Ana Paula Testa

doi:10.1007/s10924-010-0238-4

Cited by 65 publications

(54 citation statements)

References 25 publications

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“…Composite films are less stiff and crystalline than PHBV films and they exhibit increased permeability to O 2 , CO 2 , and water vapor. In addition, the produced bio-sourced films are expected to be fully compostable as many studies are available in the literature which report on the disintegration behavior of PHA-based composites [14]. Thus, the results reported here show that incorporation of BSGF into PHBV brings the following benefits: a cost reduction in the final product, which is a fully bio-sourced and biodegradable film for food packaging.…”

Section: Discussionmentioning

confidence: 70%

Development of polyhydroxyalkanoate/beer spent grain fibers composites for film blowing applications

et al. 2014

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The high cost, narrow processing window, and poor mechanical properties of polyhydroxyalkanoates hamper their use as films for food packaging applications. We report the preparation, characterization, and film blowing of polyhydroxybutyrate-valerate (PHBV)/beer spent grain fibers (BSGF) composites. Beer spent grains are by-products of the beer industry submitted to an acid/caustic treatment and to successive grinding to achieve fibers with typical size of 30 microns. PHBV/BSGF compounds were extruded and successfully subjected to draw down ratios as high as 50. However, processability was lost for BSGF contents above 10 wt%, due to their percolation within the PHBV matrix. Two PHBV/BSGF compounds were processed into blown films. The resulting mechanical, structural, and barrier properties depend on processing parameters and BSGF content. The fully bio-sourced and compostable PHBV based thin films produced under processing conditions scalable to industrial production show gas and water vapor barrier properties attractive for food packaging applications

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Section: Discussionmentioning

confidence: 70%

Development of polyhydroxyalkanoate/beer spent grain fibers composites for film blowing applications

et al. 2014

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“…O processo de transformação por injeção dos biocompósitos foi realizado em uma injetora HIMACO LHS 150/80. Os parâmetros utilizados e as temperaturas de injeção está sumarizado na Tabela 2 com base na literatura [36][37][38][39][40][41].…”

Section: Processamento Dos Biocompósitosunclassified

Desenvolvimento de biocompósitos de poli(L-ácido láctico) (PLLA) com serragem de madeira

et al. 2017

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RESUMOOs polímeros petroquímicos levam centenas anos para sofrerem decomposição, acarretando em acúmulo de resíduos nos lixões e aterros sanitários. Este impacto ambiental pode ser minimizado por meio do uso de polímeros biodegradáveis. Neste contexto, este trabalho buscou uma opção "ecologicamente amigável" para a substituição de polímeros sintéticos convencionais, por meio do estudo dos biocompósitos de poli(L -áci-do láctico) (PLLA) com a incorporação de resíduos de madeira (RM) e de aditivos, visando desenvolver novos compósitos. Assim, foram processados três diferentes tipos de amostras por extrusão, seguida de injeção, os biocompósitos de PLLA com adição de RM (PLLA/RM), com adição de um agente de acoplamento, o difenil-isocianato (MDI) denominadas de PLLA/RM/MDI e com adição ainda de um agente lubrificante, o Struktol® (s), denominadas de PLLA/RM/MDI/s, contendo de 0 a 40 % (m/m) de RM. As amostras foram caracterizadas por ensaio de resistência à tração, calorimetria exploratória diferencial (DSC), análise termogravimétrica (TGA), microscopia eletrônica de varredura (MEV), absorção de água, densidade, teor de vazios e espectroscopia no infravermelho com transformada de Fourier (FTIR). As amostras PLLA/RM/MDI/s foram também avaliadas quanto à biodegradação em solo. Os resultados revelaram que as amostras com MDI apresentaram melhores propriedades mecânicas, menor taxa de absorção de água, sem perda da estabilidade térmica, sugerindo que o MDI tenha promovido melhoria da adesão interfacial. Observou-se início do processo de biodegradação das amostras após 5 meses em solo, evidenciado por alterações visuais, bem como nas análises de TGA e DSC, sendo que o aumento do teor de RM acelerou o processo. Palavras-chave: biocompósitos, PLLA, resíduos de madeira, MDI, Struktol® ABSTRACTThe petrochemical polymers take hundreds of years to decompose, resulting in accumulation of waste in dumps and landfills. The environmental impact can be minimized with the use of biodegradable polymers. In this context, this study sought an option "environmentally friendly" to replace conventional synthetic polymers through the study of biocomposites from poly(L -lactic acid) (PLLA) with the incorporation of wood waste (WW) and additives in order to develop new products. Thus, we processed three different types of samples by extrusion followed by injection of PLLA biocomposites with the addition of WW: (PLLA/WW) with addition of a coupling agent, the diphenyl isocyanate (MDI) called PLLA/WW/MDI and even with the addition of a lubricating agent, the Struktol® (s), called PLLA/WW/MDI/s containing from 0 to 40 %wt of WW. The samples were characterized by tensile strength test, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), water absorption, density, void content and Fourier transformed infrared spectroscopy (FTIR). The samples PLLA/WW/MDI/s were also evaluated by biodegradation in soil. The results revealed that samples with MDI showed better mechanical properties,

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“…Samples were removed after 2, 4, 6, and 8 months. The recovered samples were washed thoroughly with distilled water and dried in vacuum oven for 24 h before further testing (Batista et al, 2010).…”

Section: Soil Biodegradationmentioning

confidence: 99%

Thermophysical properties and biodegradation behavior of green composites made from polyhydroxybutyrate and potato peel waste fermentation residue

Wei

Liang

McDonald

2015

Industrial Crops and Products

143

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Soil Biodegradation of PHBV/Peach Palm Particles Biocomposites

Cited by 65 publications

References 25 publications

Development of polyhydroxyalkanoate/beer spent grain fibers composites for film blowing applications

Development of polyhydroxyalkanoate/beer spent grain fibers composites for film blowing applications

Desenvolvimento de biocompósitos de poli(L-ácido láctico) (PLLA) com serragem de madeira

Thermophysical properties and biodegradation behavior of green composites made from polyhydroxybutyrate and potato peel waste fermentation residue

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