Investigations on the micellization of amphiphilic dendritic copolymers: From unimers to micelles
文献类型：期刊论文
| 作者 | Zhang, Cuiyun1,2,3; Zhou, Huipeng1; Li, Yongxin1; Zhang, Yunyi1,2; Yu, Cong1,7; Li, Hongfei4,7; Chen, Yu5; Hamley, Ian W.6; Jiang, Shichun2 |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2018-03-15 |
| 卷号 | 514页码:609-614 |
| 关键词 | Amphiphilic Dendritic Copolymers Micellization Kinetics Concentration Relaxation Times |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2017.12.070 |
| 英文摘要 | Since the micellization kinetics is influenced by polymer structure, the spherical three-dimensional topology of amphiphilic dendritic copolymers (ADPs) which hinders the phase separation during micellization is assumed to make the micellization kinetics different. In the literatures, most of the attention has been paid to the morphology transition or the morphology at equilibrium and the micellization kinetics of ADPs is rarely reported. In this study, the micellization processes of amphiphilic dendritic copolymers from unimers to the final equilibrium micelles were monitored by laser light scattering. Based on the closed association mechanism, the thermodynamics of micellization was analysed. The negative thermodynamic quantities indicate that the micellization of ADPs is driven by enthalpy. Based on the change of scattering intensity and hydrodynamic radius (Rh) with time, the detailed micellization kinetics was analysed, which contains two steps. By controlling the temperature and type of solvent, a system in which the concentration has little influence on Rh is obtained. The relaxation times of the two steps decrease with concentration, indicating that at higher concentration the rate of micellization is quicker. With the increasing mass fraction of the hydrophobic part, the relaxation times decrease and the driving force of micellization increases. (C) 2018 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000424963700066 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45693]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yu, Cong; Li, Hongfei; Chen, Yu; Hamley, Ian W.; Jiang, Shichun |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China 2.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China 3.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China 4.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 5.Tianjin Univ, Sch Sci, Dept Chem, Tianjin 300072, Peoples R China 6.Univ Reading, Sch Chem Pharm & Food Biosci, Reading RG6 6AD, Berks, England 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Cuiyun,Zhou, Huipeng,Li, Yongxin,et al. Investigations on the micellization of amphiphilic dendritic copolymers: From unimers to micelles[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,514:609-614. |
| APA | Zhang, Cuiyun.,Zhou, Huipeng.,Li, Yongxin.,Zhang, Yunyi.,Yu, Cong.,...&Jiang, Shichun.(2018).Investigations on the micellization of amphiphilic dendritic copolymers: From unimers to micelles.JOURNAL OF COLLOID AND INTERFACE SCIENCE,514,609-614. |
| MLA | Zhang, Cuiyun,et al."Investigations on the micellization of amphiphilic dendritic copolymers: From unimers to micelles".JOURNAL OF COLLOID AND INTERFACE SCIENCE 514(2018):609-614. |
入库方式： OAI收割
来源：化学研究所
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