Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications
The objective of the research was to understand and improve the unusual physical and atomization properties of the complexes/adhesives derived from the tapioca starch by addition of borate and urea. The characterization of physical properties of the synthesized adhesives was carried out by determini...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/375206 |
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| author | M. Y. Naz S. A. Sulaiman B. Ariwahjoedi Ku Zilati Ku Shaari |
| author_facet | M. Y. Naz S. A. Sulaiman B. Ariwahjoedi Ku Zilati Ku Shaari |
| author_sort | M. Y. Naz |
| collection | DOAJ |
| description | The objective of the research was to understand and improve the unusual physical and atomization properties of the complexes/adhesives derived from the tapioca starch by addition of borate and urea. The characterization of physical properties of the synthesized adhesives was carried out by determining the effect of temperature, shear rate, and mass concentration of thickener/stabilizer on the complex viscosity, density, and surface tension. In later stage, phenomenological analyses of spray jet breakup of heated complexes were performed in still air. Using a high speed digital camera, the jet breakup dynamics were visualized as a function of the system input parameters. The further analysis of the grabbed images confirmed the strong influence of the input processing parameters on full cone spray patternation. It was also predicted that the heated starch adhesive solutions generate a dispersed spray pattern by utilizing the partial evaporation of the spraying medium. Below 40°C of heating temperature, the radial spray cone width and angle did not vary significantly with increasing Reynolds and Weber numbers at early injection phases leading to increased macroscopic spray propagation. The discharge coefficient, mean flow rate, and mean flow velocity were significantly influenced by the load pressure but less affected by the temperature. |
| format | Article |
| id | doaj-art-d141240975ee42ebbbb8dbc5526ca6e2 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-d141240975ee42ebbbb8dbc5526ca6e22025-02-03T00:59:18ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/375206375206Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating ApplicationsM. Y. Naz0S. A. Sulaiman1B. Ariwahjoedi2Ku Zilati Ku Shaari3Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MalaysiaDepartment of Mechanical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MalaysiaDepartment of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MalaysiaDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MalaysiaThe objective of the research was to understand and improve the unusual physical and atomization properties of the complexes/adhesives derived from the tapioca starch by addition of borate and urea. The characterization of physical properties of the synthesized adhesives was carried out by determining the effect of temperature, shear rate, and mass concentration of thickener/stabilizer on the complex viscosity, density, and surface tension. In later stage, phenomenological analyses of spray jet breakup of heated complexes were performed in still air. Using a high speed digital camera, the jet breakup dynamics were visualized as a function of the system input parameters. The further analysis of the grabbed images confirmed the strong influence of the input processing parameters on full cone spray patternation. It was also predicted that the heated starch adhesive solutions generate a dispersed spray pattern by utilizing the partial evaporation of the spraying medium. Below 40°C of heating temperature, the radial spray cone width and angle did not vary significantly with increasing Reynolds and Weber numbers at early injection phases leading to increased macroscopic spray propagation. The discharge coefficient, mean flow rate, and mean flow velocity were significantly influenced by the load pressure but less affected by the temperature.http://dx.doi.org/10.1155/2014/375206 |
| spellingShingle | M. Y. Naz S. A. Sulaiman B. Ariwahjoedi Ku Zilati Ku Shaari Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications The Scientific World Journal |
| title | Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications |
| title_full | Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications |
| title_fullStr | Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications |
| title_full_unstemmed | Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications |
| title_short | Characterization of Modified Tapioca Starch Solutions and Their Sprays for High Temperature Coating Applications |
| title_sort | characterization of modified tapioca starch solutions and their sprays for high temperature coating applications |
| url | http://dx.doi.org/10.1155/2014/375206 |
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