Effect of concentration reduction due to adsorption on the reduced viscosity of polymer solution in extremely dilute concentration regime
文献类型：期刊论文
| 作者 | Cai, JL; Cheng, RS; Bo, SQ |
| 刊名 | POLYMER
 |
| 出版日期 | 2005-11-14 |
| 卷号 | 46期号:23页码:10457-10465 |
| 关键词 | Concentration Reduction Polymer Adsorption Adsorption Layer Thickness |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2005.08.080 |
| 英文摘要 | The phenomena of reduced viscosity bending up and sometimes appearing a maximum in extremely dilute concentration regime of polymer solution are resulted from the concentration reduction due to adsorption of polymer onto the glass capillary wall. A quantitative theoretical description of this effect based on Langmuir adsorption isotherm is given. Applying the deduced formula to fit Ohm's precisely measured reduced viscosity data of polystyrene, linear and branched polyvinyl acetate solutions for three viscometers with different capillary radius gave satisfactory results. The radius dependence of the effective adsorption layer thickness of these polymers indicates it consists of two parts, that is a true adsorption layer and a repulsion layer between anchored chains on the capillary surface and flowing chains in solution. The reduced viscosities of an ultranigh molar mass polyethylene oxide sample in aqueous solution were measured both by an ordinary glass viscometer and by a viscometer constructed with a polytetrafluoroethylene capillary. The former exhibits a maximum due to adsorption and the later possesses the typical behavior of slipping flow. After correction for solute adsorption and slippage, respectively, the two sets of data coincide well and gave a common linear reduced viscosity plot down to extremely dilute concentration regime. (c) 2005 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000232893700102 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/56361]  |
| 专题 | 中国科学院化学研究所 |
| 作者单位 | 1.S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Peoples R China 2.E China Univ Sci & Technol, Sch Mat Sci & Engn, Natl Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China 3.Nanjing Univ, Coll Chem & Chem Engn, Dept Biochem, Nanjing 210093, Peoples R China 4.Nanjing Univ, Coll Chem & Chem Engn, Natl Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China 5.Nanjing Univ, Coll Chem & Chem Engn, Key Lab Mesoscop Mat Sci, Nanjing 210093, Peoples R China 6.Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, JL,Cheng, RS,Bo, SQ. Effect of concentration reduction due to adsorption on the reduced viscosity of polymer solution in extremely dilute concentration regime[J]. POLYMER,2005,46(23):10457-10465. |
| APA | Cai, JL,Cheng, RS,&Bo, SQ.(2005).Effect of concentration reduction due to adsorption on the reduced viscosity of polymer solution in extremely dilute concentration regime.POLYMER,46(23),10457-10465. |
| MLA | Cai, JL,et al."Effect of concentration reduction due to adsorption on the reduced viscosity of polymer solution in extremely dilute concentration regime".POLYMER 46.23(2005):10457-10465. |
入库方式： OAI收割
来源：化学研究所
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