Monte Carlo Studies on the Interfacial Properties and Interfacial Structures of Ternary Symmetric Blends with Gradient Copolymers
文献类型：期刊论文
| 作者 | Sun, Dachuan; Guo, Hongxia |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY B
 |
| 出版日期 | 2012-08-09 |
| 卷号 | 116期号:31页码:9512-9522 |
| ISSN号 | 1520-6106 |
| DOI | 10.1021/jp3020172 |
| 英文摘要 | Using Monte Carlo simulation methods, the effects of the comonomer sequence distribution on the interfacial properties (including interfacial tension, interfacial thickness, saturated interfacial area per copolymer, and bending modulus) and interfacial structures (including chain conformations and comonomer distributions of the simulated copolymers at the interfaces) of a ternary symmetric blend containing two immiscible homopolymers and one gradient copolymer are investigated. We find that copolymers with a larger composition gradient width have a broader comonomer distribution along the interface normal, and hence more pronouncedly enlarge the interfacial thickness and reduce the interfacial tension. Furthermore, the counteraction effect, which arises from the tendency of heterogeneous segments in gradient copolymers to phase separate and enter their miscible phases to reduce the local enthalpy, decreases the stretching of copolymers along the interface normal direction. As a result, copolymers with a larger width of gradient composition can occupy a larger interfacial area and form softer monolayers at saturation and are more efficient in facilitating the formation of bicontinuous microemulsions. Additionally, chain length ratio, segregation strength, and interactions between homopolymers and copolymers can alter the interfacial character of gradient copolymers. There exists a strong coupling between the comonomer sequence distribution, chain conformation, and interfacial properties. Especially, bending modulus is mainly determined by the complicated interplay of interfacial copolymer density and interfacial chain conformation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000307264400026 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43439]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Hongxia |
| 作者单位 | Chinese Acad Sci, Beijing Natl Lab Mol Sci, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem,Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Dachuan,Guo, Hongxia. Monte Carlo Studies on the Interfacial Properties and Interfacial Structures of Ternary Symmetric Blends with Gradient Copolymers[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2012,116(31):9512-9522. |
| APA | Sun, Dachuan,&Guo, Hongxia.(2012).Monte Carlo Studies on the Interfacial Properties and Interfacial Structures of Ternary Symmetric Blends with Gradient Copolymers.JOURNAL OF PHYSICAL CHEMISTRY B,116(31),9512-9522. |
| MLA | Sun, Dachuan,et al."Monte Carlo Studies on the Interfacial Properties and Interfacial Structures of Ternary Symmetric Blends with Gradient Copolymers".JOURNAL OF PHYSICAL CHEMISTRY B 116.31(2012):9512-9522. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。