Interaction of urea with pluronic block copolymers by H-1 NMR spectroscopy
文献类型：期刊论文
| 作者 | Ma, Jun-he; Guo, Chen; Tang, Ya-lin; Chen, Lin; Bahadur, P.; Liu, Hui-zhou |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
 |
| 出版日期 | 2007-05-17 |
| 卷号 | 111期号:19页码:5155-5161 |
| 关键词 | differential scanning calorimetry oxide) triblock copolymers aqueous-solutions micellar structure dodecyltrimethylammonium bromide poly(propylene oxide) molecular-dynamics light-scattering propylene-oxide sodium-chloride |
| ISSN号 | 1520-6106 |
| 其他题名 | J. Phys. Chem. B |
| 中文摘要 | Solution H-1 NMR techniques were used to characterize the interaction of urea with poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymers. The urea was established to interact selectively with the PEO blocks of the block copolymer, and the interaction sites were found not to change with increasing temperature. Such interactions influence the self-assembly properties of the block copolymer in solution by increasing the hydration of the block copolymers and stabilizing the gauche conformation of the PPO chain. Therefore, urea increases the critical micellization temperature (CMT) values of PEO-PPO-PEO copolymers, and the effect of urea on the CMT is more pronounced for copolymers with higher PEO contents and lower for those with increased contents of PPO segments. |
| 英文摘要 | Solution H-1 NMR techniques were used to characterize the interaction of urea with poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymers. The urea was established to interact selectively with the PEO blocks of the block copolymer, and the interaction sites were found not to change with increasing temperature. Such interactions influence the self-assembly properties of the block copolymer in solution by increasing the hydration of the block copolymers and stabilizing the gauche conformation of the PPO chain. Therefore, urea increases the critical micellization temperature (CMT) values of PEO-PPO-PEO copolymers, and the effect of urea on the CMT is more pronounced for copolymers with higher PEO contents and lower for those with increased contents of PPO segments. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | DIFFERENTIAL SCANNING CALORIMETRY ; OXIDE) TRIBLOCK COPOLYMERS ; AQUEOUS-SOLUTIONS ; MICELLAR STRUCTURE ; DODECYLTRIMETHYLAMMONIUM BROMIDE ; POLY(PROPYLENE OXIDE) ; MOLECULAR-DYNAMICS ; LIGHT-SCATTERING ; PROPYLENE-OXIDE ; SODIUM-CHLORIDE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000246341300019 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3406]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Grad Sch, Inst Proc Engn, State Key Lab Biochem Engn,Lab Separat Sci & Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 3.VN S Gujarat Univ, Dept Chem, Surat 395007, Gujarat, India |
| 推荐引用方式 GB/T 7714 | Ma, Jun-he,Guo, Chen,Tang, Ya-lin,et al. Interaction of urea with pluronic block copolymers by H-1 NMR spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(19):5155-5161. |
| APA | Ma, Jun-he,Guo, Chen,Tang, Ya-lin,Chen, Lin,Bahadur, P.,&Liu, Hui-zhou.(2007).Interaction of urea with pluronic block copolymers by H-1 NMR spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY B,111(19),5155-5161. |
| MLA | Ma, Jun-he,et al."Interaction of urea with pluronic block copolymers by H-1 NMR spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY B 111.19(2007):5155-5161. |
入库方式： OAI收割
来源：过程工程研究所
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