Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Shamsuri, Ahmad Adlie; Abdullah, Dzulkefly Kuang

doi:10.5539/mas.v4n11p19

Cited by 36 publications

(28 citation statements)

References 31 publications

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“…The spectra were obtained by employing a universal attenuated total reflectance (UATR) equipped with a ZnSe-diamond composite crystal accessory. Each sample was scanned 16 times, in the wavenumber ranged from 4000 to 500 cm 1 and resolution of 4 cm 1 at room temperature [20]. Figure 1a,b shows the tensile extension and tensile strain at break of LDPE/CW biocomposites with different HTAB concentrations in aqueous solution.…”

Section: Characterization Of Ldpe/cw Biocompositesmentioning

confidence: 99%

Influence of Surface Treatment on Tensile Properties of Low-Density Polyethylene/Cellulose Woven Biocomposites: A Preliminary Study

et al. 2014

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Cellulose woven (CW) was surface treated by means of hexadecyltrimethylammonium bromide surfactant (HTAB) in aqueous solution medium at elevated temperature. The parameters of the surface treatment that have been studied are HTAB concentration (0.2, 0.4, 0.6, 0.8 and 1.0 wt%) and treatment time (1, 2, 3, 4 and 5 h). The untreated and treated CW filled low-density polyethylene (LDPE) biocomposites were prepared via compression molding technique. The tensile testing results of LDPE/CW biocomposites demonstrated that the optimum HTAB concentration for treatment of CW in 1 h was 0.4 wt%, while the optimum treatment time at 0.4 wt% HTAB was 2 h. The SEM (scanning electron microscope) images indicated that there is no significant difference in the morphology of the untreated and treated CW; however the morphology of the LDPE/treated CW biocomposite showed better interfacial adhesion as compared with the untreated ones. The FTIR (Fourier transform infrared spectroscopy) spectra revealed that the presence of HTAB on the surface of treated CW and also revealed the existence of intermolecular interactions between LDPE and treated CW. In summary, HTAB could potentially be used as a treatment agent for modifying the surface of CW and consequently improved the tensile properties of LDPE/CW biocomposites. OPEN ACCESSPolymers 2014, 6 2346

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Section: Characterization Of Ldpe/cw Biocompositesmentioning

confidence: 99%

Influence of Surface Treatment on Tensile Properties of Low-Density Polyethylene/Cellulose Woven Biocomposites: A Preliminary Study

et al. 2014

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“…There is a large loss of rubber wood lignin in the waste liquid (after lignin isolation), possibly due to its high water solubility and/or its relatively small molecule dimensions remained in the waste liquid. However, the isolated lignin was demonstrated to be nearly pure by FTIR study [61] [66].…”

Section: The Pre-treatment Of Biomassmentioning

confidence: 99%

“…Use of acetone/water mixture (7/3 vol/vol) as the antisolvent was found to be advantageous due to the cellulose precipitation and a high lignin extraction yield obtained [42]. Other study focused on the lignin isolation was made by Shamsuri et al who used the [mmim][MeSO 4 ] IL to extract lignin from rubber wood [61]. Depending on the concentration of the IL, the time and temperature of the pre-treatment varied.…”

Section: The Pre-treatment Of Biomassmentioning

confidence: 99%

Ionic liquids as a tool for lignocellulosic biomass fractionation

Lopes

João

Morais

et al. 2013

sustain chem process

197

124

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Lignocellulosic biomass composes a diversity of feedstock raw materials representing an abundant and renewable carbon source. In majority lignocellulose is constituted by carbohydrate macromolecules, namely cellulose and hemicellulose, and by lignin, a polyphenilpropanoid macromolecule. Between these biomacromolecules, there are several covalent and non-covalent interactions defining an intricate, complex and rigid structure of lignocellulose. The deconstruction of the lignocellulosic biomass makes these fractions susceptible for easier transformation to large number of commodities including energy, chemicals and material within the concept of biorefinery. Generally, the biomass pre-treatment depends on the final goal in the biomass processing. The recalcitrance of lignocellulose materials is the main limitation of its processing once the inherent costs are excessively high for the conventional pre-treatments. Furthermore, none of the currently known processes is highly selective and efficient for the satisfactory and versatile use, thus, new methodologies are still studied broadly. The ionic liquid technology on biomass processing is relatively recent and first studies were focused on the lignocellulosic biomass dissolution in different ionic liquids (ILs). The dissolution in IL drives to the structural changes in the regenerated biomass by reduction of cellulose crystallinity and lignin content contrasting to the original biomass. These findings provided ILs as tools to perform biomass pre-treatment and the advantageous use of their specific properties over the conventional pre-treatment processes. This review shows the critical outlook on the study of biomass dissolution and changes occurred in the biomass during this process as well as on the influence of several crucial parameters that govern the dissolution and further pre-treatment process. The review of currently known methods of biomass fractionation in IL and aqueous-IL mixtures is also discussed here and perspectives regarding these topics are given as well.

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“…This quaternary ammonium salt can be produced as an important additive used in animal feed. Meanwhile, ChCl and protic ammonium salts with hydroxyl, formyl, thiol, and carboxyl are capable of forming DES upon mixing with a common HBD, and the physicochemical properties of the resulting DES can be altered by changing the HBD or modifying the relative ratios of ChCl/HBD …”

Section: Deep Eutectic Solventsmentioning

confidence: 99%

Carbon Dioxide Capture with Ionic Liquids and Deep Eutectic Solvents: A New Generation of Sorbents

2016

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High cost and high energy penalty for CO uptake from flue gases are important obstacles in large-scale industrial applications, and developing efficient technology for CO capture from technical and economic points is crucial. Ionic liquids (ILs) show the potential for CO separation owing to their inherent advantages, and have been proposed as alternatives to overcome the drawbacks of conventional sorbents. Chemical modification of ILs to improve their performance in CO absorption has received more attention. Deep eutectic solvents (DESs) as a new generation of ILs are considered as more economical alternatives to cope with the deficiencies of high cost and high viscosity of conventional ILs. This Review discusses the potential of functionalized ILs and DESs as CO sorbents. Incorporation of CO -philic functional groups, such as amine, in cation and/or anion moiety of ILs can promot their absorption capacity. In general, the functionalization of the anion part of ILs is more effective than the cation part. DESs represent favorable solvent properties and are capable of capturing CO , but the research work is scarce and undeveloped compared to the studies conducted on ILs. It is possible to develop novel DESs with promising absorption capacity. However, more investigation needs to be carried out on the mechanism of CO sorption of DESs to clarify how these novel sorbents can be adjusted and fine-tuned to be best tailored as optimized media for CO capture.

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Isolation and Characterization of Lignin from Rubber Wood in Ionic Liquid Medium

Cited by 36 publications

References 31 publications

Influence of Surface Treatment on Tensile Properties of Low-Density Polyethylene/Cellulose Woven Biocomposites: A Preliminary Study

Influence of Surface Treatment on Tensile Properties of Low-Density Polyethylene/Cellulose Woven Biocomposites: A Preliminary Study

Ionic liquids as a tool for lignocellulosic biomass fractionation

Carbon Dioxide Capture with Ionic Liquids and Deep Eutectic Solvents: A New Generation of Sorbents

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