Preparation, chemical composition, characterization, and properties of Napier grass paper sheets
- Reddy, K. Obi, Maheswari, C. Uma, Shukla, M., Muzenda, Edison
- Authors: Reddy, K. Obi , Maheswari, C. Uma , Shukla, M. , Muzenda, Edison
- Date: 2014
- Subjects: Pulp and papermaking , Napier Grass fibers
- Type: Article
- Identifier: uj:4767 , ISSN 1520-5754 , http://hdl.handle.net/10210/11942
- Description: In this study, perennial fast growth Napier grass fibers were used for pulp and papermaking. Chlorination and alkaline processes were carried out using sodium chlorite and sodium hydroxide respectively, for pulp extraction from Napier grass. Detailed chemical composition analysis of the Napier grass fibers and the extracted pulp was carried out and a comparison with other perennial grasses was made. The extracted fibers and pulp obtained from Napier grass were characterized using scanning electron microscopy and Fourier transform infrared spectroscopy. The physical, optical, and mechanical properties of Napier grass pulp handmade paper sheets produced in the laboratory were investigated by finding the opacity, brightness, tensile index, breaking length, and burst index. Handmade paper sheets made from Napier grass pulp were compared to paper made from other perennial grasses. The superior properties of paper produced from Napier grass pulp indicate the suitability of Napier grass as an alternative non-wood source for papermaking.
- Full Text:
- Authors: Reddy, K. Obi , Maheswari, C. Uma , Shukla, M. , Muzenda, Edison
- Date: 2014
- Subjects: Pulp and papermaking , Napier Grass fibers
- Type: Article
- Identifier: uj:4767 , ISSN 1520-5754 , http://hdl.handle.net/10210/11942
- Description: In this study, perennial fast growth Napier grass fibers were used for pulp and papermaking. Chlorination and alkaline processes were carried out using sodium chlorite and sodium hydroxide respectively, for pulp extraction from Napier grass. Detailed chemical composition analysis of the Napier grass fibers and the extracted pulp was carried out and a comparison with other perennial grasses was made. The extracted fibers and pulp obtained from Napier grass were characterized using scanning electron microscopy and Fourier transform infrared spectroscopy. The physical, optical, and mechanical properties of Napier grass pulp handmade paper sheets produced in the laboratory were investigated by finding the opacity, brightness, tensile index, breaking length, and burst index. Handmade paper sheets made from Napier grass pulp were compared to paper made from other perennial grasses. The superior properties of paper produced from Napier grass pulp indicate the suitability of Napier grass as an alternative non-wood source for papermaking.
- Full Text:
Tensile properties of long untreated and alkali treated Napier grass fiber strands/epoxy composites
- Kommula, Venkata Parasuram, Kanchireddy, Obi Reddy, Shukla, Mukul, Marwala, Tshilidzi
- Authors: Kommula, Venkata Parasuram , Kanchireddy, Obi Reddy , Shukla, Mukul , Marwala, Tshilidzi
- Date: 2013
- Subjects: Tensile strength , Alkali treatment , Napier Grass fibers
- Type: Article
- Identifier: uj:4856 , http://hdl.handle.net/10210/12532
- Description: Napier grass fiber strands were extracted using the combined mechanical and water retting process. The extracted fiber strands were treated with various proportions (5, 10 and 15% w/v) of NaOH solution to improve their surface morphology and bonding with the resin. This study investigates the Tensile properties of composites made by reinforcing alkali treated, long Napier grass fiber strands in to epoxy resin with different orientations (0º). The composites were prepared with 0, 5, 10, and 15% of alkali treatment and with a fiber loading (weight %) of 10, 20, and 30%. The effect of alkali treatment, orientation and fiber loading on the tensile strength of the composites was analyzed using universal testing machine. Quantitative results from this study will be useful for more accurate design of Napier grass fiber strand reinforced composite materials for possible automotive applications.
- Full Text:
- Authors: Kommula, Venkata Parasuram , Kanchireddy, Obi Reddy , Shukla, Mukul , Marwala, Tshilidzi
- Date: 2013
- Subjects: Tensile strength , Alkali treatment , Napier Grass fibers
- Type: Article
- Identifier: uj:4856 , http://hdl.handle.net/10210/12532
- Description: Napier grass fiber strands were extracted using the combined mechanical and water retting process. The extracted fiber strands were treated with various proportions (5, 10 and 15% w/v) of NaOH solution to improve their surface morphology and bonding with the resin. This study investigates the Tensile properties of composites made by reinforcing alkali treated, long Napier grass fiber strands in to epoxy resin with different orientations (0º). The composites were prepared with 0, 5, 10, and 15% of alkali treatment and with a fiber loading (weight %) of 10, 20, and 30%. The effect of alkali treatment, orientation and fiber loading on the tensile strength of the composites was analyzed using universal testing machine. Quantitative results from this study will be useful for more accurate design of Napier grass fiber strand reinforced composite materials for possible automotive applications.
- Full Text:
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