Micellization of PAA-F108-PAA Block Copolymer Using NMR Spectroscopy
文献类型：期刊论文
| 作者 | Meng Ling-Min1,2; Huang Qing-Rong3; Deng Jing4; Wu Yi-Jie1; Shi Tong-Fei1 |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2012-07-10 |
| 卷号 | 33期号:7页码:1624-1630 |
| 关键词 | Poly(Acrylic Acid)-pluronic coPolymer Micellization Behavior H-1 Nmr Spectroscopy 2d Nuclear Overhauser Effect Spectroscopy |
| ISSN号 | 0251-0790 |
| DOI | 10.3969/j.issn.0251-0790.2012.07.046 |
| 英文摘要 | Poly(acrylic acid)-F108-Poly(acrylic acid) copolymer(PAA-F108-PAA) was synthesized by atom transfer radical polymerization(ATRP), followed by the hydrolysis of tert-butyl groups from the tert-butyl acrylate. The effects of temperature, acrylic acid neutralization degree and salt concentration on the micellization behavior of PAA-F108-PAA block copolymer were investigated by H-1 NMR spectroscopy combined with nuclear Overhauser effect spectroscopy(2D NOE). The neutralization degree of carboxyl acid groups(alpha) had little influence on the critical micellization temperature(CMT) of PAA-F108-PAA. When alpha=0.14, the PAA-F108-PAA copolymer was in a collapsed state at low temperature, at high temperature the poly(propylene oxide) block (PPO) was dehydrated and associated into a hydrophobic micellar core, while PEO entangled with PAA and formed the micellar shell; when alpha=0.80, PAA-F108-PAA copolymer was in a stretched state at low temperature, while at high temperature the micellar core was still composed of the hydrophobic PPO, with PEO and PAA separating from each other and forming the micellar shell. Salt species and concentration had great influence on the CMT of PAA-F108-PAA copolymer, which The CMT of PAA-F108-PAA copolymer decreased significantly by increasing KCl concentration to 1 mol/L. KCl showed a dehydration effect for both PPO and PEO block. In contrast, 1 mol/L KI increased the CMT of PAA-F108-PAA to a slightly higher value, suggesting that KI weakened the interaction between PPO and water but enhanced the interaction between PEO and water. |
| 语种 | 英语 |
| WOS记录号 | WOS:000306880600046 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49235]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shi Tong-Fei |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Rutgers State Univ, Dept Food Sci, New Brunswick, NJ 08901 USA 4.Sichuan Univ Sci & Engn, Zigong 643000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng Ling-Min,Huang Qing-Rong,Deng Jing,et al. Micellization of PAA-F108-PAA Block Copolymer Using NMR Spectroscopy[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2012,33(7):1624-1630. |
| APA | Meng Ling-Min,Huang Qing-Rong,Deng Jing,Wu Yi-Jie,&Shi Tong-Fei.(2012).Micellization of PAA-F108-PAA Block Copolymer Using NMR Spectroscopy.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,33(7),1624-1630. |
| MLA | Meng Ling-Min,et al."Micellization of PAA-F108-PAA Block Copolymer Using NMR Spectroscopy".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 33.7(2012):1624-1630. |
入库方式： OAI收割
来源：化学研究所
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