Characterization and acetylation behavior of bamboo pulp

Yang, Zhanping; Xu, Shuguang; Ma, Xiaolong; Wang, Shanyuan

doi:10.1007/s00226-008-0194-5

Cited by 85 publications

(59 citation statements)

References 16 publications

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“…Significantly reduced intensity peaks are observed in the crystalline patterns of treated bagasse, which indicate that the structure of raw bagasse was transformed to an amorphous structure after the acetylation reaction. Acetylation of cellulose materials often causes decrease in crystallinity [22][23][24]. The major part of cellulose is in crystalline form (about two-thirds) due to intraand intermolecular hydrogen bonding of hydroxyl groups [25].…”

Section: Xrd Analysismentioning

confidence: 99%

Partially Acetylated Sugarcane Bagasse for Wicking Oil from Contaminated Wetlands

2011

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Sugarcane bagasse was partially acetylated to enhance its oil‐wicking ability in saturated environments while holding moisture for hydrocarbon biodegradation. The water sorption capacity of raw bagasse was reduced fourfold after treatment, which indicated considerably increased hydrophobicity but not a limited capability to hold moisture for hydrocarbon biodegradation. Characterization results by Fourier transform infrared (FT‐IR), scanning electron microscopy (SEM), X‐ray diffraction (XRD), and surface area analyzer suggested that treated bagasse exhibited enhanced hydrophobicity and surface area. Oil wicking test results indicate that treated bagasse is more effective in wicking oil from highly saturated environments than raw bagasse and suggest that application of this material in remediation of oil spills in highly saturated wetlands is promising.

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Section: Xrd Analysismentioning

confidence: 99%

Partially Acetylated Sugarcane Bagasse for Wicking Oil from Contaminated Wetlands

2011

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“…No significant differences in intensity of the absorption bands noted in the fibers taken from three (3) different locations of the internodes or the nodes. Absorbance at 897,1049,1161,1430,1734,2906,3411 per cm was associated with the characteristic absorption of lignocelluloses materials (El Oudiani et al, 2009;Yang et al, 2008). These absorbances are present in all the FTIR of the bamboo studied irrespective of the location of the fiber.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 90%

“…The absorbance at 1335, 1459, 1510 and 1603 per cm, corresponds to the aromatic skeletal vibrations and ring breathing, with CO stretching in the aromatic ring of the lignins (Ganan et al, 2008;Yang et al, 2008;Sun et al, 2002). The bands in the 1604 and 1640 per cm region may attribute to CO stretching vibration of the alpha keto carbonyl in the cellulose component of bamboo (Silverstein et al, 2005).…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

“…A very prominent degradation peak also observed followed by the appearance of a long steep tail. The main DTG peak corresponds to hemicellulose, and cellulose decomposition (Yang et al, 2008), Contributions from the decomposition of lignin are visible as wide tail emerging from the main de-volatilization domain which may occur due to the vast decomposition range of these components. The mass loss of small biomass sample at in nitrogen low to moderate heating rates usually produce one to two major distinct DTG peaks, respectively associated with hemicellulose and cellulose pyrolysis.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

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Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Wahab

Mustafa

Fauzi³

et al. 2017

JAS

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The thermal degradation of matured 4-year-old culms of cultivated tropical bamboo Bambusa vulgaris was studied and analyzed. The analysis using the Fourier Transform Infrared Spectroscopy and Thermal Gravimetric Analysis revealed the presence of basic functional groups in the bamboo which consists mainly of ester, carbonyl, and hydroxyl groups. The chemicals present in the bamboo vary depending on the location of the samples taken from the bamboo culms. The moisture content and extractive were omitted in the kinetic study since they constituted less than 10% of the overall chemicals in bamboo and observed below 100℃. Low reactivity of lignin components and hemicellulose in bamboo occurred due to the peculiarities of the chemical structure and composition. The mechanism of the decomposition ISSN 2166-0379 2017 http://jas.macrothink.org 51 reactions taken as a three-step reaction which involved the activation energies and dynamics related to volatile fractions of hemicellulose, cellulose, and lignin. Activation energies of 46, 100, 105, 127, and 236 kJ/mol applied for all of the bamboos. The activation energy carried could provide better insight into the thermal decomposition process. It provides more information on critical energy needed to start a reaction. The decomposition activation energy range obtained could assist in understanding the thermal decomposition stability of the bamboo fibers and application in natural fiber reinforced polymer composite industry. Journal of Agricultural Studies

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“…Although this process has been commercialized successfully since the 1940s (Malm et al 1946), many researchers are still investigating it due to the complicated mechanism (Steinmeier 2004;Tang et al 1997;Yang et al 2008). Moreover, finding alternative sources of cellulose fibers instead of fibers from wood pulp, especially those using substitute raw materials (e.g., cotton linter, crop straw, rice husk, and wood chip), has called for special investigation on the particular cellulose source.…”

Section: Introductionmentioning

confidence: 99%

Process Modeling of the Batch Acetylation of Cotton Linter Pulp

Luo¹,

Xin²,

Ma³

et al. 2013

BioResources

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Following previous kinetic investigations of the acetylation of cotton linter pulp ), a mathematical model was set up based on the mass and energy balances to simulate the batch acetylation process; a particular goal was to predict the temperature profile. The equations were discretized using a time-dependent finite difference method. The parameters for the model, including the kinetic parameters and heat transfer rate, were well estimated from the literature and our previous work. The model using the least-mean-square-error criterion optimizes the unknown parameters. The proposed model provides an accurate prediction of the process, including the temperature profile, peak temperature, and DS value under the peak temperature. The content of the catalyst, sulfuric acid, has a dramatic effect on the temperature profile. A slight increase in sulfuric acid content will lead to a faster dissolution process for the sulfated cellulose fibers, whereas the reaction rate of the sulfated fibers with acetic anhydride in the liquid phase is not affected. The optimized values of the activation energy are 11.0 and 7.6 kJ/mol for the dissolution processes with low and high sulfuric acid contents, respectively.

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Characterization and acetylation behavior of bamboo pulp

Cited by 85 publications

References 16 publications

Partially Acetylated Sugarcane Bagasse for Wicking Oil from Contaminated Wetlands

Partially Acetylated Sugarcane Bagasse for Wicking Oil from Contaminated Wetlands

Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Process Modeling of the Batch Acetylation of Cotton Linter Pulp

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