Utilization of Cellulosic Wastes in Textile and Garment Industries: 2. Synthesis and Characterization of Cellulose Acetate from Knitted Rag

Mondal, Md. Ibrahim H.; Alam, Aftab

doi:10.1007/s10924-012-0521-7

Cited by 11 publications

(10 citation statements)

References 13 publications

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“…Before the determination of DS, the prepared CMC was acidified by using the modified protocols as described elsewhere [22,23]. Briefly, 2 g of CMC powder was placed in 100 mL of a beaker, and 40 mL of 95% ethanol was added, followed by 10 min agitation.…”

Section: Determination Of Degree Of Substitution (Ds)mentioning

confidence: 99%

“…After completely dissolving the mixture, it was then titrated by 1 N HCl in the presence indicator phenolphthalein. The DS of CMC was calculated by the utilization of the following equations [23]:…”

Section: Determination Of Degree Of Substitution (Ds)mentioning

confidence: 99%

“…Following this, the dried CMC was cooled in a desiccator until the ambient temperature was reached, and the final weight was taken. The moisture content was determined by this following equation [23]:…”

Section: Structural Morphological and Thermal Studymentioning

confidence: 99%

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Conversion of Lignocellulosic Corn Agro-Waste into Cellulose Derivative and Its Potential Application as Pharmaceutical Excipient

et al. 2020

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Lignocellulosic biomass is widely grown in many agricultural-based countries. These are typically incinerated or discarded in open spaces, which further may cause severe health and environmental problems. Hence, the proper utilization and conversion of different parts of lignocellulosic biomasses (e.g., corn wastes derived leave, cob, stalk, and husk) into value-added materials could be a promising way of protecting both health and environments. In addition, they have high-potential for myriads applications (e.g., pharmaceuticals, cosmetics, textiles, and so on). In this context, herein, we isolated holocellulose (a mixture of alpha α, beta β, and gamma γ cellulose) from corn waste, and then it was converted into carboxymethyl cellulose (CMC). Subsequently, the prepared CMC was evaluated successfully to be used as a pharmaceutical excipient. Different characterization tools were employed for structural, morphological, and thermal properties of the extracted holocellulose and synthesized CMC. Results showed that the highest yield of CMC was obtained 187.5% along with the highest degree of substitution (DS i.e., 1.83) in a single stage (i.e., size reduction technique) with the lowest particle size of holocellulose (100 µm). This happened due to the use of a single stage instead of multiple stages. Finally, extracted CMC was successfully used as a pharmaceutical excipient with promising results compared to commercially available pharmaceutical-grade CMC.

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Section: Determination Of Degree Of Substitution (Ds)mentioning

confidence: 99%

Section: Determination Of Degree Of Substitution (Ds)mentioning

confidence: 99%

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Conversion of Lignocellulosic Corn Agro-Waste into Cellulose Derivative and Its Potential Application as Pharmaceutical Excipient

et al. 2020

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“…Therefore, the use of a renewable biomass as an alternative source of cellulose for the production of CA would be an achievement from both economic and environmental points of view [14]. The achievement of obtaining CA from egagropili perfectly agrees with the strategy of finding sources alternative to wood and cotton linters for CA production whose importance is increasing day by day [15,16]. …”

Section: Introductionmentioning

confidence: 95%

Posidonia oceanica as a Renewable Lignocellulosic Biomass for the Synthesis of Cellulose Acetate and Glycidyl Methacrylate Grafted Cellulose

2013

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High-grade cellulose (97% α-cellulose content) of 48% crystallinity index was extracted from the renewable marine biomass waste Posidonia oceanica using H2O2 and organic peracids following an environmentally friendly and chlorine-free process. This cellulose appeared as a new high-grade cellulose of waste origin quite similar to the high-grade cellulose extracted from more noble starting materials like wood and cotton linters. The benefits of α-cellulose recovery from P. oceanica were enhanced by its transformation into cellulose acetate CA and cellulose derivative GMA-C. Fully acetylated CA was prepared by conventional acetylation method and easily transformed into a transparent film. GMA-C with a molar substitution (MS) of 0.72 was produced by quenching Fenton’s reagent (H2O2/FeSO4) generated cellulose radicals with GMA. GMA grafting endowed high-grade cellulose from Posidonia with adsorption capability. GMA-C removes β-naphthol from water with an efficiency of 47%, as measured by UV-Vis spectroscopy. After hydrolysis of the glycidyl group to glycerol group, the modified GMA-C was able to remove p-nitrophenol from water with an efficiency of 92%, as measured by UV-Vis spectroscopy. α-cellulose and GMA-Cs from Posidonia waste can be considered as new materials of potential industrial and environmental interest.

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“…It is a kind of green and environmentally friendly organic material that is biodegradable, biocompatible and easily reacted with metal ions because of containing hydroxyl and carboxyl groups. Cellulose diacetate has many advantages, such as good film forming property, high selectivity, good biocompatibility and easy processing, so it has been widely used in filtration, adsorption of metal ions, water treatment, reverse‐osmosis, textile fiber, and so on.…”

Section: Introductionmentioning

confidence: 99%

Microencapsulation and Morphological Characterization of Renewable Microencapsulated Phase‐Change Materials with Cellulose Diacetate Shell

Huang

Zong

2017

ChemistrySelect

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In this study, a series of microcapsules containing phase change material (MicroPCMs) with cellulose diacetate shell derived from natural renewable cellulose were fabricated via solution spray method. The effects of preparation parameters on the surface morphology and microstructure of cellulose diacetate microcapsules were characterized using field emission scanning electron microscope (FE‐SEM). Then the obtained MicroPCMs were treated with crosslinking reagent glutaraldehyde to enhance the sealness and compactness of shell. The craters existed on the surface of cellulose diacetate MicroPCMs increased the specific surface area, thus the heat‐exchange surface of PCMs core enhanced accordingly. The phase change behavior and thermal stability of MicroPCMs were investigated by differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA), respectively. While fourier transform infrared spectroscopy (FTIR) and X‐ray photoelectron spectroscopy (XPS) were employed to studied the chemical composition and surface elements of MicroPCMs. Potential applications of this renewable MicroPCMs include thermal energy storage and thermal regulation/control fields.

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Utilization of Cellulosic Wastes in Textile and Garment Industries: 2. Synthesis and Characterization of Cellulose Acetate from Knitted Rag

Cited by 11 publications

References 13 publications

Conversion of Lignocellulosic Corn Agro-Waste into Cellulose Derivative and Its Potential Application as Pharmaceutical Excipient

Conversion of Lignocellulosic Corn Agro-Waste into Cellulose Derivative and Its Potential Application as Pharmaceutical Excipient

Posidonia oceanica as a Renewable Lignocellulosic Biomass for the Synthesis of Cellulose Acetate and Glycidyl Methacrylate Grafted Cellulose

Microencapsulation and Morphological Characterization of Renewable Microencapsulated Phase‐Change Materials with Cellulose Diacetate Shell

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