Green route to modification of wood waste, cellulose and hemicellulose using reactive extrusion

Vaidya, Alankar A.; Gaugler, Marc; Smith, Dawn A.

doi:10.1016/j.carbpol.2015.10.033

Cited by 71 publications

(40 citation statements)

References 33 publications

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“…The third step in the temperature range between 286.74°C -359.49°C, could be correlated with the random cleavage of the glycosidic linkage of cellulose (Severiano et al, 2010). The temperature range between 359.49°C -516.67°C, could be attributed to the weight loss due to lignin degradation (Vaidya et al, 2016). The results are in good agreement with those reported for cellulose from apple pulp (Garcia et al, 2002), orange peel (Orozco et al, 2012), orange skin and almond peel (Boumediene et al, 2015).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

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EXTRACTION AND CHARACTERIZATION OF CELLULOSE FROM JACKFRUIT (Artocarpus integer) PEEL

Sundarraj¹,

Coimbatore²,

TamilNadu³

et al. 2018

JEBAS

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In the present study, cellulose was extracted from de-pectinated peel of Jackfruit. The peel was treated with alkali followed by a chemical process treatment. In present study, yield of jackfruit cellulose was 27g / 100g. The average particle size and zeta potential value of extracted cellulose is 0.730nm and -15.7mV respectively. Further, morphological characterization was carried out by using scanning microscopy. FTIR spectroscopy analysis revealed the presence of major absorptions indicative of cellulose and hemicellulose. The thermal profiles of the residual waste occurred in a minimum three steps, which representing the degradation profiles of hemicellulose, cellulose, and lignin * Corresponding author

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Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

“…The micrographs were determined at a magnification of X 500 at an accelerated voltage of twenty kV (Vaidya et al, 2016).…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

EXTRACTION AND CHARACTERIZATION OF CELLULOSE FROM JACKFRUIT (Artocarpus integer) PEEL

Sundarraj¹,

Coimbatore²,

TamilNadu³

et al. 2018

JEBAS

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“…Succinylated cellulose has a wide range of applications [27,28,29], such as adsorbents for water and oil, medicines for drug delivery systems, and as thermoplastic materials [30,31,32]. Generally, the succinoylation is catalysed by basic catalysts such as triethylamine and 4-Dimethylaminopyridine (DMAP), which facilitates the deprotonation of –OH groups and accelerates the reaction.…”

Section: Introductionmentioning

confidence: 99%

Modification of Cellulose with Succinic Anhydride in TBAA/DMSO Mixed Solvent under Catalyst-Free Conditions

et al. 2017

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Homogeneous modification of cellulose with succinic anhydride was performed using tetrabutylammonium acetate (TBAA)/dimethyl sulfoxide (DMSO) mixed solvent. The molar ratio of succinic anhydride (SA) to free hydroxyl groups in the anhydroglucose units (AGU), TBAA dosage, reaction temperature, and reaction time were investigated. The highest degree of substitution (DS) value of 1.191 was obtained in a 10 wt% TBAA/DMSO mixed solvent at 60 °C for 60 min, and the molar ratio of SA/AGU was 6/1. The molar ratio of SA/AGU and the TBAA dosage showed a significant influence on the reaction. The succinoylated cellulose was characterized by ATR-FTIR, TGA, XRD, solid state CP/MAS 13C NMR spectroscopy (CP/MAS 13C NMR), and SEM. Moreover, the modified cellulose was applied for the adsorption of Cu2+ and Cd2+, and both the DS values of modified cellulose and pH of the heavy metal ion solutions affected the adsorption capacity of succinylated cellulose. The highest capacity for Cu2+ and Cd2+ adsorption was 42.05 mg/g and 49.0 mg/g, respectively.

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“…It is expected that succinic anhydride is the most reactive to sugarcane bagasse, as both maleic anhydride and phthalic anhydride are conjugated molecules analogous to succinic anhydride. Previous studies have demonstrated the higher reactivity of succinic anhydride than maleic anhydride (Vaidya et al 2016). Thus, it is reasonable that sugarcane bagasse succinate had the highest substituted OH.…”

Section: Preparation Of the Sugarcane Bagasse Derivativesmentioning

confidence: 86%

Thermal Stability of Sugarcane Bagasse Derivatives bearing Carboxyl Groups Synthesized in Ionic Liquid

2016

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To illuminate changes in the thermal stability of lignocellulosic biomass by homogeneous chemical modification in ionic liquids, sugarcane bagasse derivatives bearing carboxyl groups were prepared in ionic liquids. Fourier transform infrared (FT-IR) spectroscopy and solid-state nuclear magnetic resonance (NMR) confirmed the chemical structure of the derivatives. Sugarcane bagasse derivatives with degree of substituted OH as high as 9.93 mmol/g were achieved. The homogeneous esterification was demonstrated to be a more efficient approach than heterogeneous ones. Based on thermogravimetric analysis, the onset degradation temperature of sugarcane bagasse decreased dramatically to 185 °C, 160 °C and 140 °C, using succinic anhydride, maleic anhydride, and phthalic anhydride as reagent, respectively. A first-order degradation kinetic model was applied to obtain the degradation activation energies of sugarcane bagasse. The results showed that homogeneous chemical modification significantly decreased the thermal stability of sugarcane bagasse by reducing the onset degradation temperature and degradation activation energies.

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Green route to modification of wood waste, cellulose and hemicellulose using reactive extrusion

Cited by 71 publications

References 33 publications

EXTRACTION AND CHARACTERIZATION OF CELLULOSE FROM JACKFRUIT (Artocarpus integer) PEEL

EXTRACTION AND CHARACTERIZATION OF CELLULOSE FROM JACKFRUIT (Artocarpus integer) PEEL

Modification of Cellulose with Succinic Anhydride in TBAA/DMSO Mixed Solvent under Catalyst-Free Conditions

Thermal Stability of Sugarcane Bagasse Derivatives bearing Carboxyl Groups Synthesized in Ionic Liquid

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