Turbulent drag reduction characteristics of amylopectin and its derivative
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| 024 | 7 | 0 | |a 10.1515/epoly.2004.4.1.751 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1515/epoly.2004.4.1.751 | ||
| 245 | 0 | 0 | |a Turbulent drag reduction characteristics of amylopectin and its derivative |h [Elektronische Daten] |c [Sung Taek Lim, Hyoung Jin Choi, Diptirani Biswal, Ram Prakash Singh] |
| 520 | 3 | |a Using amylopectin (AP) and a derivative, we systematically investigated their turbulent drag reduction characteristics and shear stability. The expected shear stability of polysaccharides as drag reducing and flocculating agents triggered our study on structural modification of AP. For this purpose, we prepared a derivative of AP, viz. AP grafted with polyacrylamide (GA), in which the granular form of AP powder (≈10 μm) changed into a mixture of larger fibrils and lumps. Using a rotating-disk apparatus, we measured the shaft torque and calculated the turbulent drag reduction (DR) efficiency under various experimental conditions, i.e., different polymer concentration, rotation speed, and temperature. Contrary to AP, GA showed relatively high DR efficiencies (27%) and very strong shear resistance. | |
| 540 | |a © 2013 by Walter de Gruyter GmbH & Co. | ||
| 700 | 1 | |a Lim |D Sung Taek |u Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 |4 aut | |
| 700 | 1 | |a Choi |D Hyoung Jin |u Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 |4 aut | |
| 700 | 1 | |a Biswal |D Diptirani |u Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, India |4 aut | |
| 700 | 1 | |a Singh |D Ram Prakash |u Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, India |4 aut | |
| 773 | 0 | |t e-Polymers |d De Gruyter |g 4/1(2004-12-01), 751-760 |x 2197-4586 |q 4:1<751 |1 2004 |2 4 |o epoly | |
| 856 | 4 | 0 | |u https://doi.org/10.1515/epoly.2004.4.1.751 |q text/html |z Onlinezugriff via DOI |
| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1515/epoly.2004.4.1.751 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Lim |D Sung Taek |u Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Choi |D Hyoung Jin |u Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea; Fax +82-32-865-5178 |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Biswal |D Diptirani |u Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Singh |D Ram Prakash |u Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t e-Polymers |d De Gruyter |g 4/1(2004-12-01), 751-760 |x 2197-4586 |q 4:1<751 |1 2004 |2 4 |o epoly | ||
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