The Experts below are selected from a list of 6927 Experts worldwide ranked by ideXlab platform
Amar Singh Singha - One of the best experts on this subject based on the ideXlab platform.
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synthesis characterization and antibacterial activity of biodegradable starch pva composite films reinforced with Cellulosic Fibre
Carbohydrate Polymers, 2014Co-Authors: Bhanu Priya, Vinod Kumar Gupta, Deepak Pathania, Amar Singh SinghaAbstract:Cellulosic Fibres reinforced composite blend films of starch/poly(vinyl alcohol) (PVA) were prepared by using citric acid as plasticizer and glutaraldehyde as the cross-linker. The mechanical properties of Cellulosic Fibres reinforced composite blend were compared with starch/PVA crossed linked blend films. The increase in the tensile strength, elongation percentage, degree of swelling and biodegradability of blend films was evaluated as compared to starch/PVA crosslinked blend films. The value of different evaluated parameters such as citric acid, glutaraldehyde and reinforced Fibre to starch/PVA (5:5) was found to be 25 wt.%, 0.100 wt.% and 20 wt.%, respectively. The blend films were characterized using Fourier transform-infrared spectrophotometry (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA/DTA/DTG). Scanning electron microscopy illustrated a good adhesion between starch/PVA blend and Fibres. The blend films were also explored for antimicrobial activities against pathogenic bacteria like Staphylococcus aureus and Escherichia coli. The results confirmed that the blended films may be used as exceptional material for food packaging.
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Synthesis, characterization and antibacterial activity of biodegradable starch/PVA composite films reinforced with Cellulosic Fibre
Carbohydrate Polymers, 2014Co-Authors: Bhanu Priya, Vinod Kumar Gupta, Deepak Pathania, Amar Singh SinghaAbstract:Cellulosic Fibres reinforced composite blend films of starch/poly(vinyl alcohol) (PVA) were prepared by using citric acid as plasticizer and glutaraldehyde as the cross-linker. The mechanical properties of Cellulosic Fibres reinforced composite blend were compared with starch/PVA crossed linked blend films. The increase in the tensile strength, elongation percentage, degree of swelling and biodegradability of blend films was evaluated as compared to starch/PVA crosslinked blend films. The value of different evaluated parameters such as citric acid, glutaraldehyde and reinforced Fibre to starch/PVA (5:5) was found to be 25 wt.%, 0.100 wt.% and 20 wt.%, respectively. The blend films were characterized using Fourier transform-infrared spectrophotometry (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA/DTA/DTG). Scanning electron microscopy illustrated a good adhesion between starch/PVA blend and Fibres. The blend films were also explored for antimicrobial activities against pathogenic bacteria like Staphylococcus aureus and Escherichia coli. The results confirmed that the blended films may be used as exceptional material for food packaging.
Pertti Nousiainen - One of the best experts on this subject based on the ideXlab platform.
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Effect of wet spinning parameters on the properties of novel Cellulosic Fibres
Cellulose, 2008Co-Authors: Marianna Vehviläinen, Taina Kamppuri, Jaroslaw Janicki, Danuta Ciechańska, Stina Grönqvist, Matti Siika-aho, Kristina Elg Christoffersson, Pertti NousiainenAbstract:Novel cellulose Fibres (Biocelsol) were spun by traditional wet spinning technique from the alkaline solution prepared by dissolving enzyme treated pulp directly into aqueous sodium zincate (ZnO/NaOH). The spinning dope contained 6 wt.% of cellulose, 7.8 wt.% of sodium hydroxide (NaOH) and 0.84 wt.% of zinc oxide (ZnO). The Fibres were spun into 5% and 15% sulphuric acid (H_2SO_4) baths containing 10% sodium sulphate (Na_2SO_4). The highest Fibre tenacity obtained was 1.8 cNdtex^−1 with elongation of 15% and titre of 1.4 dtex. Average molecular weights and shape of molecular weight distribution curves of the celluloses from the novel wet spun Cellulosic Fibre and from the commercial viscose Fibre were close to each other.
Bhanu Priya - One of the best experts on this subject based on the ideXlab platform.
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synthesis characterization and antibacterial activity of biodegradable starch pva composite films reinforced with Cellulosic Fibre
Carbohydrate Polymers, 2014Co-Authors: Bhanu Priya, Vinod Kumar Gupta, Deepak Pathania, Amar Singh SinghaAbstract:Cellulosic Fibres reinforced composite blend films of starch/poly(vinyl alcohol) (PVA) were prepared by using citric acid as plasticizer and glutaraldehyde as the cross-linker. The mechanical properties of Cellulosic Fibres reinforced composite blend were compared with starch/PVA crossed linked blend films. The increase in the tensile strength, elongation percentage, degree of swelling and biodegradability of blend films was evaluated as compared to starch/PVA crosslinked blend films. The value of different evaluated parameters such as citric acid, glutaraldehyde and reinforced Fibre to starch/PVA (5:5) was found to be 25 wt.%, 0.100 wt.% and 20 wt.%, respectively. The blend films were characterized using Fourier transform-infrared spectrophotometry (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA/DTA/DTG). Scanning electron microscopy illustrated a good adhesion between starch/PVA blend and Fibres. The blend films were also explored for antimicrobial activities against pathogenic bacteria like Staphylococcus aureus and Escherichia coli. The results confirmed that the blended films may be used as exceptional material for food packaging.
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Synthesis, characterization and antibacterial activity of biodegradable starch/PVA composite films reinforced with Cellulosic Fibre
Carbohydrate Polymers, 2014Co-Authors: Bhanu Priya, Vinod Kumar Gupta, Deepak Pathania, Amar Singh SinghaAbstract:Cellulosic Fibres reinforced composite blend films of starch/poly(vinyl alcohol) (PVA) were prepared by using citric acid as plasticizer and glutaraldehyde as the cross-linker. The mechanical properties of Cellulosic Fibres reinforced composite blend were compared with starch/PVA crossed linked blend films. The increase in the tensile strength, elongation percentage, degree of swelling and biodegradability of blend films was evaluated as compared to starch/PVA crosslinked blend films. The value of different evaluated parameters such as citric acid, glutaraldehyde and reinforced Fibre to starch/PVA (5:5) was found to be 25 wt.%, 0.100 wt.% and 20 wt.%, respectively. The blend films were characterized using Fourier transform-infrared spectrophotometry (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA/DTA/DTG). Scanning electron microscopy illustrated a good adhesion between starch/PVA blend and Fibres. The blend films were also explored for antimicrobial activities against pathogenic bacteria like Staphylococcus aureus and Escherichia coli. The results confirmed that the blended films may be used as exceptional material for food packaging.
Nolene Byrne - One of the best experts on this subject based on the ideXlab platform.
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Understanding key wet spinning parameters in an ionic liquid spun regenerated Cellulosic Fibre
Cellulose, 2016Co-Authors: Rasike De Silva, Kylie Vongsanga, Nolene ByrneAbstract:The use of ionic liquid solvents for the spinning of regenerated cellulose Fibres has the potential to produce both technical and textile grade regenerated cellulose Fibres. When spinning Fibres, many parameters impact the material properties of the spun Fibre. In this study, key wet spinning parameters have been investigated for the development of regenerated cellulose Fibres from ionic liquid solutions. The coagulation and associated diffusion equilibrium were calculated for two imidazolium-based ILs, and it was found that the anion largely influenced the coagulation kinetics. This was likely due to the association between the anion of the IL and cellulose. The orientation of the polymer chains is known to influence the mechanical properties greatly; previously, hot stretching was used to orientate cellulose acetate. Here we investigated this influence on the mechanical properties of regenerated cellulose Fibres by applying a post stretch at different stretch ratios.
Marianna Vehviläinen - One of the best experts on this subject based on the ideXlab platform.
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Effect of wet spinning parameters on the properties of novel Cellulosic Fibres
Cellulose, 2008Co-Authors: Marianna Vehviläinen, Taina Kamppuri, Jaroslaw Janicki, Danuta Ciechańska, Stina Grönqvist, Matti Siika-aho, Kristina Elg Christoffersson, Pertti NousiainenAbstract:Novel cellulose Fibres (Biocelsol) were spun by traditional wet spinning technique from the alkaline solution prepared by dissolving enzyme treated pulp directly into aqueous sodium zincate (ZnO/NaOH). The spinning dope contained 6 wt.% of cellulose, 7.8 wt.% of sodium hydroxide (NaOH) and 0.84 wt.% of zinc oxide (ZnO). The Fibres were spun into 5% and 15% sulphuric acid (H_2SO_4) baths containing 10% sodium sulphate (Na_2SO_4). The highest Fibre tenacity obtained was 1.8 cNdtex^−1 with elongation of 15% and titre of 1.4 dtex. Average molecular weights and shape of molecular weight distribution curves of the celluloses from the novel wet spun Cellulosic Fibre and from the commercial viscose Fibre were close to each other.