Impact behavior of sugarcane bagasse waste–EVA composites

Stael, Giovanni Chaves; Tavares, Maria Inês B.; d’Almeida, J.R.M.

doi:10.1016/s0142-9418(01)00014-9

Cited by 57 publications

(33 citation statements)

References 6 publications

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“…A large amount of bagasse is currently burnt as a low-grade fuel for energy recovery; only a limited quantity has been used to make pulps, broad materials and composites. [12][13][14] The expansive utilization of bagasse lignin is possible if its added value is enhanced, which is possible if industrial and scientific researchers can find better applications.…”

Section: Introductionmentioning

confidence: 99%

Extraction of lignin from sugar cane bagasse and its modification into a high performance dispersant for pesticide formulations

Li¹,

Ge²

2011

J. Braz. Chem. Soc.

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Com o objetivo de utilizar efetivamente um sub-produto de material não madeireiro, foi extraída lignina do bagaço de cana-de-açúcar via acidificação do licor negro. A lignina extraída do bagaço da cana-de-açúcar (EBL) foi modificada por oxidação, hidroximetilação e sulfonação em um lignossulfonato solúvel em água (EBL-M). O composto foi caracterizado por IR, UV, GPC e análise elementar. Os resultados mostraram que as unidades aromáticas do EBL-M foram mantidas e efetivamente sulfonadas e que a porcentagem de S foi alta (7,82%). A eficiência de dispersão de EBL-M para formulações pesticidas foi comparada com dispersantes comerciais via medição da frequência de suspensão. Como esperado, EBL-M mostrou a mesma eficiência de outros lignossulfonatos comerciais para dispersar kinsperse, quando usados para grânulos de dimetomorfe dispersíveis em água. A caracterização através do peso molecular e do teor de lignossulfonatos no grupo sulfônico, sugeriu que a eficiência dispersante aumentou com o maior teor de grupo sulfônico e maior peso molecular. Quando usado para grânulos de tribenuron dispersíveis em água, a eficiência dispersante de EBL-M foi muito próxima dos dispersantes comerciais.In order to effectively utilize a by-product of non-wood material, lignin was extracted from sugar cane bagasse via acidification of black liquor. The extracted sugar cane bagasse lignin (EBL) was modified by oxidation, hydroxymethylation, and sulfonation into a water-soluble lignosulfonate (EBL-M). It was characterized by IR, UV, GPC and elemental analysis. The results showed that the aromatic units of EBL-M were kept well and it was effectively sulfonated, that the percentage of S was high as 7.82%. The dispersing efficiency of EBL-M for pesticide formulations was compared with commercial dispersants via suspending rate measurement. As expected, EBL-M had the equal optimal dispersing efficiency to kinsperse than other commercial lignosulfonates when being used for dimethomorph water dispersible granules. The characterization of molecular weight and sulfonic group's content of lignosulfonates suggested that the dispersing efficiency increased with higher sulfonic group's content and higher molecular weight. As to being used for tribenuron water dispersible granules, the dispersing efficiency of EBL-M was much close to the commercial dispersants.

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Section: Introductionmentioning

confidence: 99%

Extraction of lignin from sugar cane bagasse and its modification into a high performance dispersant for pesticide formulations

Li¹,

Ge²

2011

J. Braz. Chem. Soc.

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“…A large number of organic and inorganic materials, such as clay minerals (Chen & Evans, 2005;Usuki et al, 1990Usuki et al, , 1993Wilhelm, Sierakowski, Souza, & Wypych, 2003) and lignocellulosic fibres (Malainine, Mahrouz, & Dufresne, 2005;Orts et al, 2005;Stael, Tavares, & D'Almeida, 2001) have been tested as potential sources of nanoparticles and nanofibres to be used as nanofillers. These materials have the advantage of being renewable, which means they have a much smaller environmental impact than their synthetic equivalents (Satyanarayana, Arizaga, & Wypych, 2009).…”

Section: Introductionmentioning

confidence: 99%

Bionanocomposites of thermoplastic starch reinforced with bacterial cellulose nanofibres: Effect of enzymatic treatment on mechanical properties

Woehl

Canestraro

Mikowski

et al. 2010

Carbohydrate Polymers

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“…[3,4] However, considering the high amount of this raw material produced annually in countries such as Brazil, efforts must be addressed in order to increase valuable applications of the remaining sugarcane bagasse. Besides, the stockpiling of this material includes a risk due to the possibility of spontaneous combustion of the stored bagasse.…”

Section: Introductionmentioning

confidence: 99%

Fiberboards Based on Sugarcane Bagasse Lignin and Fibers

Hoareau

Oliveira

Grelier

et al. 2006

Macro Materials & Eng

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Summary: Fiberboards were prepared using phenolic type resins (phenol‐formaldehyde) and sugarcane bagasse fibers. Lignin extracted through an organosolv process from sugarcane bagasse was used as substitute of phenol in phenolic resins from 40 (lignin‐phenol‐formaldehyde) to 100 wt.‐% (lignin‐formaldehyde) substitution. Some of the fibers were chemically modified by oxidation with chlorine dioxide and treatment with furfuryl alcohol (FA), leading to fibers coated with polyfurfuryl alcohol. Thermal analysis (DSC and TGA) of the prepolymers allowed setting up an efficient curing to prepare fiberboards. Impact strength and water absorption were measured showing the importance of the curing pressure to obtain good performance. When chemically modified fibers were used to prepare board samples, enhanced durability against white root fungi is observed, and to a less degree against brown root fungi. Sugarcane bagasse fiberboards were prepared from prepolymers where lignin substituted phenol up to 100%. This replaces these materials in advantageous position, relating to those prepared from phenol‐formaldehyde resins, due to their high content of renewable raw materials. The results obtained are promising for the utilization of sugarcane bagasse as raw materials for preparing fiberboards to be used in tropical areas.

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Impact behavior of sugarcane bagasse waste–EVA composites

Cited by 57 publications

References 6 publications

Extraction of lignin from sugar cane bagasse and its modification into a high performance dispersant for pesticide formulations

Extraction of lignin from sugar cane bagasse and its modification into a high performance dispersant for pesticide formulations

Bionanocomposites of thermoplastic starch reinforced with bacterial cellulose nanofibres: Effect of enzymatic treatment on mechanical properties

Fiberboards Based on Sugarcane Bagasse Lignin and Fibers

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