Grafting of acrylonitrile onto high α-cellulose extracted from Hibiscus sabdariffa

Ali, Firdous Imran; Saikia, C. N.; Sen, Surojit

doi:10.1016/s0926-6690(96)00210-5

Cited by 13 publications

(4 citation statements)

References 18 publications

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“…The fibre has a high cellulose content, low weight, significant tensile strength and is found in abundance throughout the world. Some research work has been reported on graft copolymerization of H. sabdariffa with methyl methylacrylate and acrylonitrile [20][21][22]. This paper details the efforts made to explore and utilize the mechanical potential of virgin H. sabdariffa stem fibre as a reinforcing agent in the PF matrix; a subject largely unexplored despite its worldwide abundance.…”

Section: Introductionmentioning

confidence: 99%

The Study of Hibiscus sabdariffa-reinforced-cellulose Fibre Composite

Chauhan

Kaith

2013

Polymers from Renewable Resources

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Waste biomass, in the form of Hibiscus sabdariffa stem fibre (1cm length), was used as reinforcement in a phenoplast polymer matrix to form a composite. The ratio of phenol in the phenoplast resin was varied whereas formaldehyde was kept constant; a phenol formaldehyde ratio of 0.75:1.0 and fibre:resin ratio of 12.7:87.3 were found to exhibit maximum mechanical strength. The comparative mechanical evaluation of the phenoplast and fibre-reinforced composite was performed by assessment of the hardness, modulus of rupture (MOR), modulus of elasticity (MOE), stress at the limit of proportionality (SP), tensile strength, compressive strength and wear resistance. The composites were characterized using advanced techniques. It was observed that fibre-reinforced phenol-formaldehyde (PF) composites exhibited physico-chemical resistance and improved mechanical behaviour compared with the phenoplast composite.

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Section: Introductionmentioning

confidence: 99%

The Study of Hibiscus sabdariffa-reinforced-cellulose Fibre Composite

Chauhan

Kaith

2013

Polymers from Renewable Resources

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“…[5][6][7][8][9][10] The grafting process depends on the reactivity of monomers used, the type of initiation, and cellulose accessibility. [11][12][13][14][15] Attempts have also been made to study the thermal degradation behavior and other properties of graft copolymers. [16][17][18][19] Saccharum ciliare fiber collected from the higher reaches of Himalayan region has been found to contain 58.2% cellulose.…”

Section: Introductionmentioning

confidence: 99%

X-Ray Diffraction, Morphological, and Thermal Studies on Methylmethacrylate Graft Copolymerized Saccharum ciliare Fiber

Singha

Shama

Thakur

2008

International Journal of Polymer Analysis and Characterization

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This article deals with the study of graft copolymerization of methylmethacrylate (MMA) onto Saccharum ciliare fiber in air in the presence of ferrous ammonium sulfate-potassium persulfate (FAS-KPS) as redox initiator. After optimizing the various reaction parameters such as solvent, time, temperature, concentration of monomer, and initiator to obtain maximum graft yield (58%), the grafted fiber has been characterized by various techniques such as scanning electron microscopy (SEM), Fourier transform-infrared spectrophotometry (FT-IR), X-ray diffraction, and thermogravimetric=differential thermal analysis along with DTG studies. The raw fiber and graft copolymerized fibers were also subjected to evaluation of different physical and chemical properties.

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“…For this reason, chemical modification, copolymerization, or crosslinking should be carried out for the cellulose to achieve efficient ion‐exchange capacity 7. Chemical modifications give cellulose new properties such as hydrophilic or hydrophobic character, improved elasticity, water sorbency, ion‐exchange capability, and thermal resistance 8–10. Modified cellulose products, having ion exchanging properties, have been obtained by different methods.…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of acrylonitrile‐grafted cyanoethyl cellulose for the removal of copper (II) ions

Kamel

Hassan

El‐Sakhawy

2006

J of Applied Polymer Sci

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Cyanoethyl cellulose (CE-Cell) with two different degrees of substitution of 0.37 and 0.60 were prepared from cotton linter. The ionic-xanthate method was used to graft the acrylonitrile onto CE-Cell to form acrylonitrile-grafted cyanoethyl cellulose (GCE-Cell). The conditions of grafting such as sodium hydroxide concentration, grafting time, monomer concentration, and temperature were optimized. The hydrolyzed CE-Cell and GCE-Cell were applied for the adsorption of copper (II) ions from aqueous solution. IR spectroscopy was also used for further evaluation of CE-Cell and GCE-Cell.

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Grafting of acrylonitrile onto high α-cellulose extracted from Hibiscus sabdariffa

Cited by 13 publications

References 18 publications

The Study of Hibiscus sabdariffa-reinforced-cellulose Fibre Composite

The Study of Hibiscus sabdariffa-reinforced-cellulose Fibre Composite

X-Ray Diffraction, Morphological, and Thermal Studies on Methylmethacrylate Graft Copolymerized Saccharum ciliare Fiber

Preparation and application of acrylonitrile‐grafted cyanoethyl cellulose for the removal of copper (II) ions

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