Microfibrillated nanocellulose from balsa tree as potential reinforcement in the preparation of ‘green’ composites with castor seed cake

Kumode, Marina Mieko Nishidate; Bolzon, Graciela I. Muniz; Magalhães, Washington Luiz Esteves; Kestur, Satyanarayana G.

doi:10.1016/j.jclepro.2017.02.083

Cited by 31 publications

(11 citation statements)

References 33 publications

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“…Higher values of the observed FS and FM values in the present study can be attributed to a relatively better interaction between the nanofibers and the matrix. On the contrary, the lower values of the FS and the FM with a higher amount of nanofibers observed by Kiziltas et al (2016) can be attributed to the limited interaction between the matrix (HDPE) and the nanofibers, which results in an increase in free volume and thus a decrease in the observed properties (Nakagaito et al 2011;Kumode et al 2017).…”

Section: Flexural Propertiesmentioning

confidence: 89%

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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Section: Flexural Propertiesmentioning

confidence: 89%

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 order to extract and quantify the percentage of cellulose, the methodology was used Kumode et al, 2017 andPinheiro et al, 2017, 5g of the sample in an Erlenmeyer with 1mL of acetic acid, 5g of sodium chlorite, a magnetic stirrer and 150mL of distilled water, and added to a hot plate at a temperature of 70°C for 1h. After that, he placed again the same amount of CH₃COOH and chlorite, remaining for another 1h, at the end of that hour, he added the same amount of CH₃COOH and chlorite, remaining for another 2h.…”

Section: Cellulose Percentage and Extractionmentioning

confidence: 99%

Value aggregation of pine (Araucaria angustifolia) nuts agro-industrial waste by cellulose extraction

Barros

Pessoa

Júnior

et al. 2021

RSD

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Araucaria (Araucaria angustifolia) is a tree species found in the Southeast and South of Brazil. It is also known as Brazilian pine, presenting fruits of high acceptance. However, its processing generates by-products that are little used. Thus, this work aimed to extract and characterize the cellulose obtained from the pinion husk, as well as to evaluate the contents of ash, lignin, cellulose and α-cellulose in its composition. The raw material and the extracted cellulose were characterized by X-ray fluorescence analysis (XRF), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). As for the contents of chemical composition detected, the husks showed 1.6% ash, 7% extractives, 34% lignin and 55% cellulose, being 46% α-cellulose and 9% hemicellulose. It was observed by XRD that the removal of amorphous materials resulted in a gain of crystallinity (from 19 to 33%). Proving the efficiency of the extraction, the characterization of the cellulose obtained was shown to be of high purity, since the main band of the lignin (FTIR) and the amorphous materials of the cellulosic sample (TGA) disappeared. Finally, this work shows that the pinion bark is a rich source of cellulose, making it possible to obtain nanocrystals.

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“…The cellulose content was quantified according to Kumode et al, 2017, where it was used a 500 mL Erlenmeyer with 5 g of the ground sample without extracts, 1 mL of glacial acetic acid, 5 g of sodium chlorite (NaClO2), 180 mL of distilled water, remaining at 75 ºC with stirring. After 1 h of reaction, 1 more glacial acetic acid (mL) and NaClO2 (5 g) were added, repeating this cycle for another 1 h. In the end, the solution remained for 5 h under magnetic stirring.…”

Section: Cellulose Extractionmentioning

confidence: 99%

Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

Barros¹,

Oliveira²,

Pessoa³

et al. 2021

RSD

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O açaí (Euterpe precatoria Mart.) é uma planta amplamente cultivada na região norte do Brasil. Seus frutos vêm ganhando destaque mundial devido aos inúmeros benefícios para a saúde humana. Consequentemente, a produção de celulose aumentou consideravelmente nos últimos anos, gerando uma quantidade significativa de resíduos (principalmente sementes). Como esses resíduos não têm uma destinação adequada, eles são descartados no meio ambiente ou incinerados, causando inúmeros impactos ambientais. Com o objetivo de apresentar alternativas de aplicação desses resíduos, este trabalho teve como objetivo avaliar o conteúdo lignocelulósico das sementes de açaí - extratos, cinzas, lignina, celulose (α-celulose e hemicelulose) - além de extrair e caracterizar a celulose obtida desse abundante resíduo. As sementes e a celulose extraída foram caracterizadas por diversas técnicas: fluorescência de raios X (XRF), difração de raios X (XRD), refletância total atenuada com espectroscopia de infravermelho por transformada de Fourier (ATR / FTIR) e termogravimetria (TGA). Neste estudo, foi confirmado o alto potencial do uso da semente de açaí como fonte alternativa de celulose, uma vez que apresenta 45,5% desse polímero e todas as técnicas de caracterização mostram a pureza da celulose extraída (tipo I).

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Microfibrillated nanocellulose from balsa tree as potential reinforcement in the preparation of ‘green’ composites with castor seed cake

Cited by 31 publications

References 33 publications

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

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

Value aggregation of pine (Araucaria angustifolia) nuts agro-industrial waste by cellulose extraction

Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

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