Aggregation and clouding behavior of aqueous solution of EO-PO block copolymer in presence of n-alkanols
文献类型：期刊论文
| 作者 | Bharatiya, B.; Guo, C.; Ma, J. H.; Hassan, P. A.; Bahadur, P. |
| 刊名 | EUROPEAN POLYMER JOURNAL
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 43期号:5页码:1883-1891 |
| 关键词 | pluronics diffusion coefficient micelle cloud-point |
| ISSN号 | 0014-3057 |
| 其他题名 | Eur. Polym. J. |
| 中文摘要 | The aqueous solution behavior of an ethylene oxide-propylene oxide triblock copolymer Pluronic (R) P123 [(EO)(20)(PO)(70)(EO)(20)] was investigated in the presence of various n-alkanols (C-1-C-6) by cloud-point, viscosity, dynamic light scattering (DLS) and spectroscopic (FTIR, NMR) measurements. For lower alkanols (methanol, ethanol and I -propanol), the cloud-points (CPs) increased with increase in alkanol concentration. The reverse effect was found for higher alkanols (C-4-C-6) where both the CPs and critical micelle temperatures (CMTs) decreased with increase in concentration. This behavior is explained in terms of a co-operative association of higher alkanols and block copolymers by replacing water molecules in the PPO core and inducing micellar growth in aqueous P123 solution. Lower alkanols are likely to be good solvents for both PEO and PPO blocks and the effect on PPO blocks predominates indicating an increase in CP and CMT with increase in alkanol concentration. (C) 2007 Elsevier Ltd. All rights reserved. |
| 英文摘要 | The aqueous solution behavior of an ethylene oxide-propylene oxide triblock copolymer Pluronic (R) P123 [(EO)(20)(PO)(70)(EO)(20)] was investigated in the presence of various n-alkanols (C-1-C-6) by cloud-point, viscosity, dynamic light scattering (DLS) and spectroscopic (FTIR, NMR) measurements. For lower alkanols (methanol, ethanol and I -propanol), the cloud-points (CPs) increased with increase in alkanol concentration. The reverse effect was found for higher alkanols (C-4-C-6) where both the CPs and critical micelle temperatures (CMTs) decreased with increase in concentration. This behavior is explained in terms of a co-operative association of higher alkanols and block copolymers by replacing water molecules in the PPO core and inducing micellar growth in aqueous P123 solution. Lower alkanols are likely to be good solvents for both PEO and PPO blocks and the effect on PPO blocks predominates indicating an increase in CP and CMT with increase in alkanol concentration. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Polymer Science |
| 研究领域[WOS] | Polymer Science |
| 关键词[WOS] | ANGLE NEUTRON-SCATTERING ; DIFFERENTIAL SCANNING CALORIMETRY ; OXIDE) TRIBLOCK COPOLYMER ; MICELLE FORMATION ; NONIONIC SURFACTANTS ; PHASE-DIAGRAMS ; LATTICE THEORY ; PLURONIC L64 ; MICELLIZATION ; WATER |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000247040600029 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3284]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.S Gujarat Univ, Dept Chem, Surat 395007, India 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100864, Peoples R China 3.Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India |
| 推荐引用方式 GB/T 7714 | Bharatiya, B.,Guo, C.,Ma, J. H.,et al. Aggregation and clouding behavior of aqueous solution of EO-PO block copolymer in presence of n-alkanols[J]. EUROPEAN POLYMER JOURNAL,2007,43(5):1883-1891. |
| APA | Bharatiya, B.,Guo, C.,Ma, J. H.,Hassan, P. A.,&Bahadur, P..(2007).Aggregation and clouding behavior of aqueous solution of EO-PO block copolymer in presence of n-alkanols.EUROPEAN POLYMER JOURNAL,43(5),1883-1891. |
| MLA | Bharatiya, B.,et al."Aggregation and clouding behavior of aqueous solution of EO-PO block copolymer in presence of n-alkanols".EUROPEAN POLYMER JOURNAL 43.5(2007):1883-1891. |
入库方式： OAI收割
来源：过程工程研究所
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